add deploy yml for gitea

The DSP tests drive the same files the page loads, so there is no second
implementation to drift. The room tests put two real browsers through a
real room with a synthetic microphone, which covers everything except the
acoustics: slot rotation, leave and rejoin, and the stalled-device case
where a chirp must be withheld rather than sent late.

Co-Authored-By: Claude Opus 5 (1M context) <[email protected]>

.github/workflows/holdem-tests.yml

@@ -1,26 +0,0 @@
-# Unit tests for the Texas Hold'em dealer's money logic.
-#
-# The betting engine, the side-pot calculator and the table state are plain script-tag
-# modules with no build step, so they run directly under Node's built-in test runner —
-# no package.json, no install step, nothing to keep up to date.
-
-name: Hold'em tests
-
-on:
-  pull_request:
-    branches: [ "master" ]
-  push:
-    branches: [ "master" ]
-
-jobs:
-  test:
-    runs-on: ubuntu-latest
-
-    steps:
-    - uses: actions/checkout@v4
-    - name: Setup Node
-      uses: actions/setup-node@v4
-      with:
-        node-version: 20
-    - name: Run Hold'em unit tests
-      run: node --test tests/holdem/*.test.js

JoshHeaps.Net.UiTests/EchoDspTests.cs

@@ -0,0 +1,296 @@
+using Microsoft.Playwright;
+using Microsoft.Playwright.NUnit;
+using NUnit.Framework;
+
+namespace JoshHeaps.Net.UiTests;
+
+/// <summary>
+/// Exercises the acoustic-ranging pipeline against a simulated room. The DSP runs in the browser
+/// because that is where it runs in production; these tests drive the same files the page loads,
+/// so there is no second implementation to drift.
+/// </summary>
+[TestFixture]
+public class EchoDspTests : PageTest
+{
+    private TestConfiguration Config => TestConfiguration.Instance;
+
+    public override BrowserNewContextOptions ContextOptions() => Config.GetBrowserContextOptions();
+
+    [SetUp]
+    public async Task LoadPipeline()
+    {
+        await Page.GotoAsync(Config.Test.BaseUrl);
+        await Page.AddScriptTagAsync(new() { Url = "/js/EchoScripts/EchoDsp.js" });
+        await Page.AddScriptTagAsync(new() { Url = "/js/EchoScripts/EchoSim.js" });
+    }
+
+    [Test]
+    public async Task Matched_Filter_Finds_The_Chirp_Within_One_Sample()
+    {
+        var error = await Page.EvaluateAsync<double>("""
+            () => {
+                const sampleRate = 48000;
+                const chirp = EchoDsp.makeChirp({ sampleRate, durationSeconds: 0.05, startHz: 2000, endHz: 8000 });
+                const recording = new Float32Array(sampleRate);
+                for (let i = 0; i < recording.length; i++) recording[i] = (Math.random() * 2 - 1) * 0.02;
+
+                const offset = 12345;
+                for (let i = 0; i < chirp.length; i++) recording[offset + i] += chirp[i] * 0.3;
+
+                const peak = EchoDsp.findFirstPeak(EchoDsp.matchedFilterEnvelope(recording, chirp));
+                return Math.abs(peak.index - offset);
+            }
+            """);
+
+        Assert.That(error, Is.LessThan(1.0), "arrival should be located to within a sample");
+    }
+
+    [Test]
+    public async Task A_Tone_Cannot_Be_Located_But_A_Chirp_Can()
+    {
+        var ratios = await Page.EvaluateAsync<double[]>("""
+            () => {
+                const sampleRate = 48000;
+                const sidelobeRatio = template => {
+                    const recording = new Float32Array(sampleRate / 2);
+                    const offset = 8000;
+                    for (let i = 0; i < template.length; i++) recording[offset + i] += template[i];
+
+                    const envelope = EchoDsp.matchedFilterEnvelope(recording, template);
+                    const peak = EchoDsp.maxInRange(envelope, 0, envelope.length);
+                    let highest = 0;
+                    for (let i = 0; i < envelope.length; i++) {
+                        if (Math.abs(i - peak.index) < 200) continue;
+                        highest = Math.max(highest, envelope[i]);
+                    }
+                    return highest / peak.value;
+                };
+
+                const chirp = EchoDsp.makeChirp({ sampleRate, durationSeconds: 0.05, startHz: 2000, endHz: 8000 });
+                const tone = EchoDsp.makeChirp({ sampleRate, durationSeconds: 0.05, startHz: 5000, endHz: 5000 });
+                return [sidelobeRatio(chirp), sidelobeRatio(tone)];
+            }
+            """);
+
+        Assert.That(ratios[1], Is.GreaterThan(0.5), "a tone should correlate almost as well far from the true arrival");
+        Assert.That(ratios[0], Is.LessThan(0.25), "a chirp should give one unambiguous arrival");
+    }
+
+    [Test]
+    public async Task Clock_Offset_And_Pipeline_Latency_Cancel()
+    {
+        var distance = await Page.EvaluateAsync<double>("""
+            () => {
+                const sampleRate = 48000;
+                const speedOfSound = 343;
+                const flight = (4.2 / speedOfSound) * sampleRate;
+                const slot = 0.4 * sampleRate;
+                const offsetB = 987654;
+                const latencyA = 0.031 * sampleRate;
+                const latencyB = 0.128 * sampleRate;
+
+                return EchoDsp.pairDistance({
+                    a1: latencyA,
+                    a2: slot + latencyB + flight,
+                    b1: offsetB + latencyA + flight,
+                    b2: offsetB + slot + latencyB,
+                    sampleRate,
+                    speedOfSound
+                });
+            }
+            """);
+
+        Assert.That(distance, Is.EqualTo(4.2).Within(0.001));
+    }
+
+    [Test]
+    public async Task Collocated_Devices_Read_Zero_Before_Calibration()
+    {
+        var distance = await Page.EvaluateAsync<double>("""
+            () => {
+                const sampleRate = 48000;
+                const speedOfSound = 343;
+                const spacing = (0.19 / speedOfSound) * sampleRate;
+                const slot = 0.4 * sampleRate;
+                const latencyA = 0.04 * sampleRate;
+                const latencyB = 0.11 * sampleRate;
+
+                // Two tabs on one machine: one speaker, one microphone, so the self path and the
+                // cross path are the same physical distance.
+                return EchoDsp.pairDistance({
+                    a1: latencyA + spacing,
+                    a2: slot + latencyB + spacing,
+                    b1: latencyA + spacing,
+                    b2: slot + latencyB + spacing,
+                    sampleRate,
+                    speedOfSound
+                });
+            }
+            """);
+
+        Assert.That(distance, Is.EqualTo(0).Within(0.001));
+    }
+
+    [Test]
+    public async Task Speaker_To_Microphone_Spacing_Is_Added_Back()
+    {
+        var distances = await Page.EvaluateAsync<double[]>("""
+            () => {
+                const sampleRate = 48000;
+                const speedOfSound = 343;
+                const truth = 3.0;
+                const epsilonA = 0.18;
+                const epsilonB = 0.04;
+                const samples = metres => (metres / speedOfSound) * sampleRate;
+                const slot = 0.4 * sampleRate;
+
+                const peaks = {
+                    a1: samples(epsilonA),
+                    a2: slot + samples(truth),
+                    b1: samples(truth),
+                    b2: slot + samples(epsilonB),
+                    sampleRate,
+                    speedOfSound
+                };
+
+                return [
+                    EchoDsp.pairDistance(peaks),
+                    EchoDsp.pairDistance({ ...peaks, epsilonA, epsilonB })
+                ];
+            }
+            """);
+
+        Assert.That(distances[0], Is.EqualTo(3.0 - 0.11).Within(0.005), "uncorrected range reads short");
+        Assert.That(distances[1], Is.EqualTo(3.0).Within(0.005), "correcting for spacing recovers the true range");
+    }
+
+    [Test]
+    public async Task Simulated_Room_Recovers_Distances_And_Layout()
+    {
+        var errors = await Page.EvaluateAsync<double[]>("""
+            () => {
+                const result = EchoSim.runRound({
+                    positions: [[0, 0], [3.2, 0], [3.0, 2.6], [0.4, 2.9], [1.7, 1.4]]
+                });
+                return [EchoSim.worstDistanceError(result), EchoSim.worstPositionError(result), result.keep.length];
+            }
+            """);
+
+        Assert.That(errors[2], Is.EqualTo(5), "every device should survive a clean round");
+        Assert.That(errors[0], Is.LessThan(0.05), "worst pairwise range error");
+        Assert.That(errors[1], Is.LessThan(0.15), "worst recovered position error");
+    }
+
+    [Test]
+    public async Task A_Reflection_Louder_Than_The_Direct_Path_Does_Not_Win()
+    {
+        var errors = await Page.EvaluateAsync<double[]>("""
+            () => {
+                const measure = relativeThreshold => EchoSim.worstDistanceError(EchoSim.runRound({
+                    positions: [[0, 0], [3.4, 0], [2.9, 2.7], [0.2, 2.5]],
+                    reflections: [{ extraMetres: 1.8, gain: 5 }],
+                    peakOptions: { relativeThreshold }
+                }));
+
+                return [measure(undefined), measure(0.5)];
+            }
+            """);
+
+        Assert.That(errors[0], Is.LessThan(0.05), "the first arrival is the distance, not the loudest one");
+        Assert.That(errors[1], Is.GreaterThan(1.5),
+            "a threshold high enough to miss the direct path must measure the reflection instead — this is what the default guards against");
+    }
+
+    [Test]
+    public async Task Echoes_Inside_The_Correlation_Lobe_Bound_The_Accuracy()
+    {
+        var errors = await Page.EvaluateAsync<double[]>("""
+            () => {
+                const positions = [[0, 0], [3.2, 0], [3.0, 2.6], [0.4, 2.9], [1.7, 1.4]];
+                const worst = reflectionExtraRange =>
+                    EchoSim.worstDistanceError(EchoSim.runRound({ positions, reflectionExtraRange }));
+
+                return [worst([0.4, 4.0]), worst([0.08, 0.4])];
+            }
+            """);
+
+        Assert.That(errors[0], Is.LessThan(0.01), "echoes well clear of the direct arrival are rejected outright");
+        Assert.That(errors[1], Is.LessThan(0.15),
+            "echoes arriving inside the correlation lobe cannot be separated and bias the range — this bounds what a device resting on a hard surface can achieve");
+    }
+
+    [Test]
+    public async Task A_Bad_Measurement_Is_Rejected_And_The_Layout_Survives()
+    {
+        var outcome = await Page.EvaluateAsync<double[]>("""
+            () => {
+                const positions = [[0, 0], [3.2, 0], [3.0, 2.6], [0.4, 2.9], [1.6, 1.3]];
+                const config = EchoSim.buildConfiguration({ positions });
+                const reports = EchoSim.detectAll(EchoSim.synthesizeRound(config), config);
+
+                reports[3].peaks[0] += 9000;
+
+                const solved = EchoDsp.solveRound(reports, { speedOfSound: config.speedOfSound });
+                const truth = solved.keep.map(index => positions[index]);
+                const aligned = EchoDsp.alignToReference(solved.points, truth);
+                const worst = Math.max(...aligned.map((point, i) => EchoSim.separation(point, truth[i])));
+                const brokenPairSurvived = solved.keep.includes(0) && solved.keep.includes(3);
+
+                return [solved.keep.length, brokenPairSurvived ? 1 : 0, worst];
+            }
+            """);
+
+        Assert.That(outcome[0], Is.EqualTo(4), "exactly one endpoint of the bad pair should be dropped");
+        Assert.That(outcome[1], Is.EqualTo(0), "the impossible pair must not survive");
+        Assert.That(outcome[2], Is.LessThan(0.2), "the remaining layout should be unpoisoned");
+    }
+
+    [Test]
+    public async Task Alignment_Undoes_An_Arbitrary_Rotation_And_Mirror()
+    {
+        var errors = await Page.EvaluateAsync<double[]>("""
+            () => {
+                const reference = [[0, 0], [3.4, 0], [2.9, 2.7], [0.2, 2.5]];
+                const scramble = (points, angle, mirror) => points.map(([x, y]) => {
+                    const mx = x * mirror;
+                    return [mx * Math.cos(angle) - y * Math.sin(angle) + 11, mx * Math.sin(angle) + y * Math.cos(angle) - 4];
+                });
+
+                const worst = mirror => {
+                    const aligned = EchoDsp.alignToReference(scramble(reference, 0.9, mirror), reference);
+                    return Math.max(...aligned.map((point, i) => EchoSim.separation(point, reference[i])));
+                };
+
+                return [worst(1), worst(-1)];
+            }
+            """);
+
+        Assert.That(errors[0], Is.LessThan(1e-9), "rotation and translation should be recovered exactly");
+        Assert.That(errors[1], Is.LessThan(1e-9), "a mirrored solve should be un-mirrored onto the reference");
+    }
+
+    [Test]
+    public async Task Consecutive_Frames_Do_Not_Rotate_Or_Flip()
+    {
+        var drift = await Page.EvaluateAsync<double>("""
+            () => {
+                const positions = [[0, 0], [3.2, 0], [3.0, 2.6], [0.4, 2.9]];
+                const first = EchoSim.runRound({ positions, seed: 11 });
+
+                const previous = new Array(positions.length).fill(null);
+                first.keep.forEach((device, i) => { previous[device] = first.points[i]; });
+
+                const config = EchoSim.buildConfiguration({ positions, seed: 22 });
+                const reports = EchoSim.detectAll(EchoSim.synthesizeRound(config), config);
+                const second = EchoDsp.solveRound(reports, {
+                    speedOfSound: config.speedOfSound,
+                    previousPoints: previous
+                });
+
+                return Math.max(...second.keep.map((device, i) => EchoSim.separation(second.points[i], previous[device])));
+            }
+            """);
+
+        Assert.That(drift, Is.LessThan(0.3), "a stationary room should not move between frames");
+    }
+}

JoshHeaps.Net.UiTests/EchoRoomTests.cs

@@ -0,0 +1,244 @@
+using Microsoft.Playwright;
+using Microsoft.Playwright.NUnit;
+using NUnit.Framework;
+
+namespace JoshHeaps.Net.UiTests;
+
+/// <summary>
+/// Drives two real browsers through a real room: the hub, the round scheduler, slot rotation,
+/// detection and the solve all run unchanged. Only the microphone is synthetic, so the answer is
+/// known in advance — this is everything except the acoustics.
+/// </summary>
+[TestFixture]
+public class EchoRoomTests : PlaywrightTest
+{
+    private const double TargetMetres = 2.5;
+    private IPlaywright? _playwright;
+    private IBrowser? _browser;
+    private readonly List<IBrowserContext> _contexts = [];
+    private TestConfiguration Config => TestConfiguration.Instance;
+
+    [OneTimeSetUp]
+    public async Task LaunchBrowser()
+    {
+        // Its own Playwright instance and browser: the fake-media launch flags have to be set at
+        // launch time, and the fixture-managed browser is already running by the time tests start.
+        _playwright = await Microsoft.Playwright.Playwright.CreateAsync();
+        _browser = await _playwright.Chromium.LaunchAsync(new BrowserTypeLaunchOptions
+        {
+            Headless = true,
+            Args =
+            [
+                "--use-fake-ui-for-media-stream",
+                "--use-fake-device-for-media-stream",
+                "--autoplay-policy=no-user-gesture-required"
+            ]
+        });
+    }
+
+    [OneTimeTearDown]
+    public async Task CloseBrowser()
+    {
+        if (_browser is not null) await _browser.CloseAsync();
+        _playwright?.Dispose();
+    }
+
+    [TearDown]
+    public async Task CloseContexts()
+    {
+        foreach (var context in _contexts) await context.CloseAsync();
+        _contexts.Clear();
+    }
+
+    [Test]
+    public async Task Two_Devices_Measure_The_Distance_Between_Them()
+    {
+        var roomCode = $"T{Random.Shared.Next(1000, 9999)}";
+        var first = await NewDeviceAsync(roomCode, "laptop");
+        var second = await NewDeviceAsync(roomCode, "phone");
+
+        await Expect(first.Locator("#echoRoster li")).ToHaveCountAsync(2);
+
+        var measured = await WaitForMeasurementAsync(first);
+        var alsoMeasured = await WaitForMeasurementAsync(second);
+
+        Assert.That(measured, Is.EqualTo(TargetMetres).Within(0.05), "the first device's range");
+        Assert.That(alsoMeasured, Is.EqualTo(TargetMetres).Within(0.05), "both devices should agree");
+    }
+
+    [Test]
+    public async Task A_Device_Leaving_Stops_The_Rounds_And_Rejoining_Resumes_Them()
+    {
+        var roomCode = $"T{Random.Shared.Next(1000, 9999)}";
+        var first = await NewDeviceAsync(roomCode, "laptop");
+        var second = await NewDeviceAsync(roomCode, "phone");
+
+        await WaitForMeasurementAsync(first);
+        await second.ClickAsync("#echoLeave");
+
+        await Expect(first.Locator("#echoRoster li")).ToHaveCountAsync(1);
+        await Expect(first.Locator("#echoStatus")).ToContainTextAsync("Waiting for a second device");
+
+        await second.ClickAsync("#echoJoin");
+        await Expect(first.Locator("#echoRoster li")).ToHaveCountAsync(2);
+        Assert.That(await WaitForMeasurementAsync(first), Is.EqualTo(TargetMetres).Within(0.05));
+    }
+
+    /// <summary>
+    /// A stalled main thread is the two-tabs-on-one-machine failure: only one tab is visible, so the
+    /// other gets throttled and its round handling runs late. A late chirp attributed to the wrong
+    /// slot yields a plausible-looking but completely wrong range, so the requirement is not "always
+    /// measures" — it is "never reports a wrong answer". A round it cannot hit must be sat out.
+    /// </summary>
+    [Test]
+    public async Task A_Stalled_Device_Sits_Rounds_Out_Instead_Of_Reporting_Nonsense()
+    {
+        var roomCode = $"T{Random.Shared.Next(1000, 9999)}";
+        var first = await NewDeviceAsync(roomCode, "laptop");
+        var second = await NewDeviceAsync(roomCode, "phone", stallMilliseconds: 900);
+
+        await Expect(first.Locator("#echoRoster li")).ToHaveCountAsync(2);
+        await first.EvaluateAsync("() => { window.__seen = []; }");
+        await first.EvaluateAsync("""
+            () => {
+                const original = EchoPage.renderSolved.bind(EchoPage);
+                EchoPage.renderSolved = update => {
+                    const range = update.solved?.matrix?.[0]?.[1];
+                    if (range != null) window.__seen.push(range);
+                    return original(update);
+                };
+            }
+            """);
+
+        await first.WaitForTimeoutAsync(20000);
+        var seen = await first.EvaluateAsync<double[]>("() => window.__seen");
+        var satOut = await second.EvaluateAsync<int>("() => EchoSession.skippedRounds");
+
+        TestContext.Out.WriteLine($"reported ranges: {string.Join(", ", seen.Select(r => r.ToString("0.000")))}, sat out: {satOut}");
+        Assert.That(satOut, Is.GreaterThan(0),
+            "the stall must actually have cost the device some slots, or this test proves nothing");
+        Assert.That(seen, Is.Not.Empty, "a stalled peer should still let some rounds through");
+        Assert.That(seen, Is.All.EqualTo(TargetMetres).Within(0.05),
+            "every range that gets reported must be right — a stalled device must sit the round out, not chirp late");
+    }
+
+    [Test]
+    public async Task The_Capture_Worklet_Keeps_A_Continuous_Readable_Stream()
+    {
+        var page = await NewDeviceAsync($"T{Random.Shared.Next(1000, 9999)}", "laptop", fakeMicrophone: false);
+
+        await page.WaitForFunctionAsync(
+            "() => EchoAudio.highestFrame > 48000",
+            null,
+            new PageWaitForFunctionOptions { Timeout = 15000, PollingInterval = 100 });
+
+        var capture = await page.EvaluateAsync<double[]>("""
+            () => [
+                EchoAudio.context.sampleRate,
+                EchoAudio.warnings.length,
+                EchoAudio.read(EchoAudio.highestFrame - 24000, 24000)?.length ?? 0,
+                EchoAudio.read(EchoAudio.highestFrame + 1000, 100) === null ? 1 : 0,
+                Math.abs(EchoAudio.frameAt(EchoAudio.context.currentTime) - EchoAudio.highestFrame)
+            ]
+            """);
+
+        Assert.That(capture[0], Is.EqualTo(48000), "the pipeline assumes it got the rate it asked for");
+        Assert.That(capture[1], Is.EqualTo(0), "a clean fake device should raise no capture warnings");
+        Assert.That(capture[2], Is.EqualTo(24000), "recent audio must be readable out of the ring");
+        Assert.That(capture[3], Is.EqualTo(1), "reads past the captured end must fail rather than return silence");
+        Assert.That(capture[4], Is.LessThan(48000),
+            "the frame index and the context clock must stay in the same domain — a scheduled playback time is converted straight into a recording position");
+    }
+
+    /// <summary>
+    /// A page joined to the room with its microphone replaced by a synthesizer. Every slot's chirp
+    /// is placed where a room of this geometry would put it, including a different unknown output
+    /// latency per slot so the cancellation is actually exercised.
+    /// </summary>
+    private async Task<IPage> NewDeviceAsync(
+        string roomCode,
+        string name,
+        bool fakeMicrophone = true,
+        int stallMilliseconds = 0)
+    {
+        var context = await _browser!.NewContextAsync(new BrowserNewContextOptions
+        {
+            IgnoreHTTPSErrors = true,
+            Permissions = ["microphone"]
+        });
+
+        _contexts.Add(context);
+        var page = await context.NewPageAsync();
+        page.Console += (_, message) =>
+        {
+            if (message.Type == "error") TestContext.Out.WriteLine($"[{name} console] {message.Text}");
+        };
+
+        await page.GotoAsync($"{Config.Test.BaseUrl}/echo?room={roomCode}");
+        await page.FillAsync("#echoName", name);
+        if (fakeMicrophone) await page.EvaluateAsync(FakeMicrophoneScript, TargetMetres);
+        if (stallMilliseconds > 0) await page.EvaluateAsync(StallScript, stallMilliseconds);
+        await page.ClickAsync("#echoJoin");
+
+        return page;
+    }
+
+    /// <summary>Blocks the main thread on every round announcement, the way a throttled tab does.</summary>
+    private const string StallScript = """
+        stallMs => {
+            const original = EchoSession.handleRoundStarting.bind(EchoSession);
+            EchoSession.handleRoundStarting = schedule => {
+                const until = performance.now() + stallMs;
+                while (performance.now() < until) { /* hold the thread */ }
+                return original(schedule);
+            };
+        }
+        """;
+
+    private static async Task<double> WaitForMeasurementAsync(IPage page)
+    {
+        await page.WaitForFunctionAsync(
+            "() => EchoPage.lastSolved?.solved?.matrix?.[0]?.[1] != null",
+            null,
+            new PageWaitForFunctionOptions { Timeout = 30000, PollingInterval = 250 });
+
+        return await page.EvaluateAsync<double>("() => EchoPage.lastSolved.solved.matrix[0][1]");
+    }
+
+    /// <summary>
+    /// Synthesizes what the microphone would have heard for this round. The device's own chirp is
+    /// placed at the frame it was actually scheduled for rather than at its nominal slot position,
+    /// so any drift between "when the round said to play" and "when playback was really booked"
+    /// reaches the detector instead of being papered over by the harness.
+    /// </summary>
+    private const string FakeMicrophoneScript = """
+        targetMetres => {
+            const speedOfSound = 343;
+            const epsilonMetres = 0.08;
+            const latencyBySlot = [1400, 5200, 2600, 7100, 900, 4300, 3300, 6000];
+
+            EchoAudio.read = (startFrame, length) => {
+                const round = EchoSession.pending ?? EchoSession.lastRound;
+                if (!round) return null;
+
+                const chirp = EchoSession.chirp;
+                const toSamples = metres => Math.round((metres / speedOfSound) * round.sampleRate);
+                const recording = new Float32Array(length);
+
+                round.schedule.slotOrder.forEach((_, slot) => {
+                    const own = slot === round.ownSlot;
+                    const origin = own
+                        ? round.scheduledFrame - round.windowStart
+                        : round.leadInSamples + slot * round.slotSamples;
+                    const at = origin + latencyBySlot[slot] + toSamples(own ? epsilonMetres : targetMetres);
+                    const amplitude = own ? 1.0 : 0.25;
+
+                    for (let i = 0; i < chirp.length && at + i < length; i++) recording[at + i] += chirp[i] * amplitude;
+                });
+
+                for (let i = 0; i < length; i++) recording[i] += (Math.random() * 2 - 1) * 0.01;
+                return recording;
+            };
+        }
+        """;
+}

JoshHeaps.Net/.gitea/workflows/deploy.yml

@@ -1,4 +1,4 @@
-# .gitea/workflows/deploy.yml
+# .gitea/workflows/deploy.yml
 name: Build and Deploy
 
 on:
@@ -12,17 +12,13 @@ concurrency:
 
 jobs:
   build-deploy:
-    # Gitea's runner images are lean, so the toolchain is installed below rather
-    # than assumed. The glibc that libchess_engine.so links against comes from
-    # this image, not from the runner host — keep it matched to the prod server.
     runs-on: ubuntu-latest
 
     steps:
-      - name: Install toolchain
+      - name: Install deploy tools
         run: |
           apt-get update
-          apt-get install -y --no-install-recommends \
-            cmake build-essential rsync openssh-client
+          apt-get install -y --no-install-recommends rsync openssh-client
 
       - name: Checkout
         uses: actions/checkout@v4
@@ -33,26 +29,10 @@ jobs:
           dotnet-version: '8.0.x'
 
       - name: Restore
-        run: dotnet restore JoshHeaps.Net/JoshHeaps.Net.csproj
+        run: dotnet restore
 
-      - name: Build native chess engine (libchess_engine.so)
-        run: |
-          cmake -S native/chess_engine -B native/chess_engine/build -DCMAKE_BUILD_TYPE=Release
-          cmake --build native/chess_engine/build
-          cp native/chess_engine/build/libchess_engine.so JoshHeaps.Net/Resources/
-
-      # Publishing the project rather than the solution keeps chess_engine.vcxproj
-      # (Windows-only MSBuild C++ targets) and the UiTests assemblies out of it.
       - name: Publish
-        run: dotnet publish JoshHeaps.Net/JoshHeaps.Net.csproj -c Release -o ./publish
-
-      - name: Verify payload
-        run: |
-          set -euo pipefail
-          test -f publish/Resources/libchess_engine.so \
-            || { echo "libchess_engine.so missing from publish output"; exit 1; }
-          test -x publish/Resources/stockfish-ubuntu-x86-64-sse41-popcnt \
-            || { echo "stockfish is not executable"; exit 1; }
+        run: dotnet publish -c Release -o ./publish
 
       - name: Prepare SSH
         env:
@@ -67,8 +47,6 @@ jobs:
           chmod 600 ~/.ssh/deploy_key
           ssh-keyscan -p "$PORT" "$SSH_HOST" >> ~/.ssh/known_hosts 2>/dev/null
 
-      # --exclude chess-data: never let --delete remove the learned-engine training
-      # data, which lives in the deploy dir unless ChessEngine__WeightsPath is set.
       - name: Rsync to server
         env:
           SSH_HOST:   ${{ secrets.SSH_HOST }}
@@ -78,11 +56,11 @@ jobs:
         run: |
           set -euo pipefail
           PORT="${SSH_PORT:-22}"
-          rsync -az --delete --exclude 'chess-data' \
+          rsync -az --delete \
             -e "ssh -p $PORT -i ~/.ssh/deploy_key -o StrictHostKeyChecking=yes" \
             publish/ "$SSH_USER@$SSH_HOST:$TARGET_DIR/"
 
-      - name: Reload and restart service
+      - name: Restart service
         env:
           SSH_HOST:     ${{ secrets.SSH_HOST }}
           SSH_PORT:     ${{ secrets.SSH_PORT }}

JoshHeaps.Net/Hubs/EchoHub.cs

@@ -0,0 +1,52 @@
+using JoshHeaps.Net.Models;
+using JoshHeaps.Net.Services.Interfaces;
+using Microsoft.AspNetCore.SignalR;
+
+namespace JoshHeaps.Net.Hubs;
+
+/// <summary>
+/// Membership and peak reporting for acoustic ranging rooms. Nothing that arrives here is audio:
+/// a report is a handful of sample indices, and the geometry is solved on the clients.
+/// </summary>
+public class EchoHub(IEchoRoomStore rooms) : Hub
+{
+    /// <summary>Join (or create) a room and receive an id plus the current roster.</summary>
+    public async Task<EchoJoinResult> JoinRoom(string roomCode, string displayName, int sampleRate)
+    {
+        var result = rooms.Join(roomCode, Context.ConnectionId, displayName, sampleRate);
+        await Groups.AddToGroupAsync(Context.ConnectionId, GroupFor(result.RoomCode));
+        await Clients.Group(GroupFor(result.RoomCode)).SendAsync("RoomChanged", result.Room);
+
+        return result;
+    }
+
+    /// <summary>File this device's arrival indices for the room's open round.</summary>
+    public bool ReportRound(EchoPeakReport report) => rooms.Report(Context.ConnectionId, report);
+
+    /// <summary>
+    /// Server clock, for estimating each device's offset from it. Only needs to be good to a few
+    /// tens of milliseconds: it decides which chirp is whose, never how far away anything is.
+    /// </summary>
+    public long ServerTime() => DateTimeOffset.UtcNow.ToUnixTimeMilliseconds();
+
+    public async Task<bool> LeaveRoom() => await RemoveFromRoom();
+
+    public override async Task OnDisconnectedAsync(Exception? exception)
+    {
+        await RemoveFromRoom();
+        await base.OnDisconnectedAsync(exception);
+    }
+
+    internal static string GroupFor(string roomCode) => $"echo:{roomCode.ToUpperInvariant()}";
+
+    private async Task<bool> RemoveFromRoom()
+    {
+        var (roomCode, room) = rooms.Leave(Context.ConnectionId);
+        if (roomCode is null) return false;
+
+        await Groups.RemoveFromGroupAsync(Context.ConnectionId, GroupFor(roomCode));
+        if (room is not null) await Clients.Group(GroupFor(roomCode)).SendAsync("RoomChanged", room);
+
+        return true;
+    }
+}

JoshHeaps.Net/Models/EchoModels.cs

@@ -0,0 +1,84 @@
+namespace JoshHeaps.Net.Models;
+
+/// <summary>A device taking part in a ranging room.</summary>
+public sealed class EchoDevice
+{
+    public required string DeviceId { get; init; }
+    public required string ConnectionId { get; init; }
+    public required string DisplayName { get; set; }
+    public int SampleRate { get; set; }
+}
+
+/// <summary>
+/// One chirp cycle: every device plays in turn, and every device listens to the whole thing.
+/// </summary>
+public sealed class EchoRound
+{
+    public required string RoundId { get; init; }
+    public required string[] SlotOrder { get; init; }
+    public int SlotMilliseconds { get; init; }
+    public DateTimeOffset Deadline { get; init; }
+    public Dictionary<string, EchoPeakReport> Reports { get; } = [];
+}
+
+/// <summary>
+/// What one device heard. Peaks are fractional sample indices into that device's own continuous
+/// recording, one per slot, null where a chirp was not detected. Nothing else is ever uploaded.
+/// </summary>
+public sealed class EchoPeakReport
+{
+    public required string DeviceId { get; init; }
+    public required string RoundId { get; init; }
+    public int Slot { get; init; }
+    public int SampleRate { get; init; }
+    public double Epsilon { get; init; }
+    public double?[] Peaks { get; init; } = [];
+}
+
+public sealed class EchoJoinResult
+{
+    public required string DeviceId { get; init; }
+    public required string RoomCode { get; init; }
+    public required EchoRoomSnapshot Room { get; init; }
+}
+
+public sealed class EchoRoomSnapshot
+{
+    public required string RoomCode { get; init; }
+    public required EchoDeviceSnapshot[] Devices { get; init; }
+}
+
+public sealed class EchoDeviceSnapshot
+{
+    public required string DeviceId { get; init; }
+    public required string DisplayName { get; init; }
+    public int SampleRate { get; init; }
+}
+
+/// <summary>Tells every device when to chirp: its own slot index and how long a slot lasts.</summary>
+public sealed class EchoRoundSchedule
+{
+    public required string RoundId { get; init; }
+    public required string[] SlotOrder { get; init; }
+    public int SlotMilliseconds { get; init; }
+    public int TailMilliseconds { get; init; }
+
+    /// <summary>
+    /// When slot zero should sound, in server time, set far enough ahead that every device can
+    /// receive the message and book the playback before it arrives. Devices schedule against this
+    /// rather than against message arrival, so one slow client cannot drag its chirp into another
+    /// device's slot and invalidate the round for everybody.
+    /// </summary>
+    public long StartsAtUnixMs { get; init; }
+}
+
+/// <summary>
+/// Every device's peaks for one round, broadcast unchanged. Each client solves the geometry itself
+/// so the server never needs the ranging maths.
+/// </summary>
+public sealed class EchoRoundResult
+{
+    public required string RoundId { get; init; }
+    public required string[] SlotOrder { get; init; }
+    public required EchoPeakReport[] Reports { get; init; }
+}

JoshHeaps.Net/Pages/Casino.cshtml

@@ -1,58 +0,0 @@
-@page
-@model JoshHeaps.Net.Pages.CasinoModel
-@{
-    ViewData["Title"] = "Casino Games";
-    Layout = "_Layout";
-}
-
-<div class="casino-container">
-    <h1 class="casino-header">Casino Games</h1>
-    <p class="casino-subtitle">Tools for running table games without doing the math yourself</p>
-
-    <div class="games-grid">
-        <a href="/casino/texasholdem" class="game-card">
-            <div class="game-icon">🃏</div>
-            <div class="game-title">Texas Hold'em</div>
-            <div class="game-description">
-                A dealer's assistant: seat players around the table, track blinds, chips and
-                all-ins, then split main and side pots automatically.
-            </div>
-        </a>
-
-        <a href="/casino/texasholdem/quicksplit" class="game-card">
-            <div class="game-icon">➗</div>
-            <div class="game-title">Quick Split</div>
-            <div class="game-description">
-                Chop a pot in seconds on your phone — no table setup, just the amount,
-                how many players are splitting it, and the smallest chip in play.
-            </div>
-        </a>
-
-        <div class="game-card disabled">
-            <div class="game-icon">🎲</div>
-            <div class="game-title">Craps</div>
-            <div class="game-description">Payout calculator for the table.</div>
-            <div class="coming-soon">Coming soon...</div>
-        </div>
-
-        <div class="game-card disabled">
-            <div class="game-icon">🎡</div>
-            <div class="game-title">Roulette</div>
-            <div class="game-description">Bet tracking and payout reference.</div>
-            <div class="coming-soon">Coming soon...</div>
-        </div>
-
-        <div class="game-card disabled">
-            <div class="game-icon">🂡</div>
-            <div class="game-title">Blackjack</div>
-            <div class="game-description">Multi-hand dealer tracker.</div>
-            <div class="coming-soon">Coming soon...</div>
-        </div>
-    </div>
-
-    <a href="/" class="home-button">← Back to Home</a>
-</div>
-
-@section Styles {
-    <link href="/css/casino/page.css?v=@ViewData["cssVersion"]" rel="stylesheet" type="text/css" />
-}

JoshHeaps.Net/Pages/Casino/TexasHoldem.cshtml

@@ -1,614 +0,0 @@
-@page
-@model JoshHeaps.Net.Pages.Casino.TexasHoldemModel
-@{
-    ViewData["Title"] = "Texas Hold'em Dealer";
-    Layout = "_Layout";
-}
-
-<div id="holdemApp">
-    <header id="holdemHeader">
-        <div id="holdemHeaderLeft">
-            <h1>Texas Hold'em Dealer</h1>
-            <p class="holdemSubtitle">Seat your players, track the action, split the pot.</p>
-            <span id="handCounterBadge" class="handCounterBadge">Hand #1</span>
-        </div>
-        <div id="holdemHeaderActions">
-            <a href="/casino/texasholdem/quicksplit" class="holdemBtn" title="Chop a pot without setting up a table">Quick Split</a>
-            <button id="misdealBtn" class="holdemBtn" title="Take this hand back — every chip returns to the player who put it in, and the same button deals again" hidden>Misdeal</button>
-            <button id="nextHandBtn" class="holdemBtn" title="Move the button, small blind and big blind to the next occupied seat">Next Hand ⟳</button>
-            <button id="resolvePotBtn" class="holdemBtn holdemBtnAccent">Resolve Pot</button>
-            <button id="resetTableBtn" class="holdemBtn holdemBtnDanger">Reset Table</button>
-            <a href="/casino" class="holdemBtn holdemBtnGhost">← Casino</a>
-        </div>
-    </header>
-
-    <div id="holdemLayout">
-        <section id="tableSection">
-            <div id="pokerTableWrap">
-                <div id="pokerTable">
-                    <div id="potBadge">
-                        <span id="potBadgeLabel">Pot</span>
-                        <span id="potBadgeAmount">$0</span>
-                    </div>
-                </div>
-                <div id="betsLayer" aria-hidden="true"></div>
-                <div id="seatsLayer"></div>
-            </div>
-            <p id="tableHint" class="tableHint"></p>
-            <p class="tableHintActions">
-                <button type="button" id="openRulingsBtn" class="linkBtn">Common rulings</button>
-            </p>
-        </section>
-
-        <aside id="holdemSidebar">
-            <section id="seatEditorPanel" class="sidebarPanel seatEditorPanel">
-                <div class="seatSheetGrip" aria-hidden="true"></div>
-                <div class="seatEditorHeader">
-                    <h2 id="seatEditorTitle">Select a seat</h2>
-                    <button id="closeSeatEditorBtn" class="seatSheetClose" aria-label="Done editing this seat">Done</button>
-                </div>
-                <div id="seatEditorBody">
-                    <p class="fieldHint">Click a seat at the table to edit their name, cards, chips and anything else.</p>
-                </div>
-            </section>
-
-            <details class="sidebarPanel" open>
-                <summary>Table Setup</summary>
-                <div class="panelBody">
-                    <label class="fieldRow">
-                        <span>Seats at table</span>
-                        <input type="number" id="seatCountInput" min="2" max="24" value="10" />
-                    </label>
-                    <label class="fieldRow">
-                        <span>Blinds move</span>
-                        <select id="directionSelect">
-                            <option value="clockwise" selected>Clockwise</option>
-                            <option value="counterclockwise">Counterclockwise</option>
-                        </select>
-                    </label>
-                    <label class="fieldRow">
-                        <span>Dedicated dealer (not a seat)</span>
-                        <input type="checkbox" id="dedicatedDealerToggle" />
-                    </label>
-                    <p class="fieldHint">Turn this on if a person outside the game deals — no seat shows the dealer button, but blinds still rotate automatically each hand.</p>
-                    <div class="blindsRow">
-                        <label class="fieldRow">
-                            <span>Small blind</span>
-                            <input type="number" id="smallBlindInput" min="0" step="0.5" />
-                        </label>
-                        <label class="fieldRow">
-                            <span>Big blind</span>
-                            <input type="number" id="bigBlindInput" min="0" step="0.5" />
-                        </label>
-                    </div>
-                    <label class="fieldRow">
-                        <span>Starting stack ($)</span>
-                        <input type="number" id="defaultStackInput" min="0" step="1" placeholder="e.g. 200" />
-                    </label>
-                    <p class="fieldHint">Blinds post themselves each hand. Seats without their own stack start here.</p>
-
-                    <details class="subPanel">
-                        <summary>House take</summary>
-                        <div class="subPanelBody">
-                            <div class="blindsRow">
-                                <label class="fieldRow">
-                                    <span>Rake (%)</span>
-                                    <input type="number" id="rakePercentInput" min="0" max="100" step="0.5" placeholder="0" />
-                                </label>
-                                <label class="fieldRow">
-                                    <span>Cap ($)</span>
-                                    <input type="number" id="rakeCapInput" min="0" step="1" placeholder="none" />
-                                </label>
-                            </div>
-                            <label class="fieldRow">
-                                <span>No flop, no drop</span>
-                                <input type="checkbox" id="rakeNoFlopInput" />
-                            </label>
-                            <p class="fieldHint">
-                                Taken from the pot when it's awarded, and shown before anything is pushed.
-                                Rounded down to a chip the table has, so the players keep what the house
-                                can't make. Leave the percentage at zero for a game that doesn't rake.
-                            </p>
-                            <p class="fieldHint" id="rakeTakenHint" hidden></p>
-                        </div>
-                    </details>
-
-                    <details class="subPanel">
-                        <summary>Without live betting</summary>
-                        <div class="subPanelBody">
-                            <label class="fieldRow">
-                                <span>Base pot amount ($)</span>
-                                <input type="number" id="basePotInput" min="0" step="1" placeholder="e.g. 500" />
-                            </label>
-                            <p class="fieldHint">For tracking a hand by hand instead of tapping the action: everyone is assumed to have put in this much, unless their seat says otherwise.</p>
-                        </div>
-                    </details>
-                </div>
-            </details>
-
-            <details class="sidebarPanel">
-                <summary>Session</summary>
-                <div class="panelBody">
-                    <p id="storageWarning" class="storageWarning" hidden></p>
-                    <h3 class="panelSubhead">Standings</h3>
-                    <div class="standingsTableWrap">
-                        <div id="standingsTable">
-                            <div class="standingsRow standingsHeader">
-                                <span>Player</span>
-                                <span class="standingsInHead">In</span>
-                                <span class="standingsWonHead">Won</span>
-                                <span class="standingsNetHead">Net</span>
-                                <span class="standingsChipsHead" title="What they are holding — the cash to count out if they leave now">Chips</span>
-                                <span title="Those chips, less the cash they handed over">Up/down</span>
-                            </div>
-                            <div id="standingsList"></div>
-                        </div>
-                    </div>
-                    <p id="standingsEmptyHint" class="fieldHint">Everyone who has bought in shows up here, with what they'd be owed if the night ended now.</p>
-
-                    <h3 class="panelSubhead">Waiting list</h3>
-                    <form id="waitingListForm" class="waitingAdd">
-                        <input type="text" id="waitingNameInput" maxlength="24" placeholder="Who's waiting?" autocomplete="off" />
-                        <button type="submit" id="waitingAddBtn" class="holdemBtn holdemBtnSmall">Add</button>
-                    </form>
-                    <ol id="waitingList" class="waitingList"></ol>
-                    <p id="waitingEmptyHint" class="fieldHint">Nobody waiting. Add the people standing behind the chairs, and the tool will offer them the next seat that opens.</p>
-
-                    <div id="bankReconcile" class="bankReconcile" hidden>
-                        <div class="bankReconcileRow">
-                            <span>Cash taken</span>
-                            <span id="bankCashIn"></span>
-                        </div>
-                        <div class="bankReconcileRow">
-                            <span>Chips in play</span>
-                            <span id="bankChipsInPlay"></span>
-                        </div>
-                        <div class="bankReconcileRow" id="bankDiscardedRow" hidden>
-                            <span>Taken off the table</span>
-                            <span id="bankDiscarded"></span>
-                        </div>
-                        <div class="bankReconcileRow" id="bankRakedRow" hidden>
-                            <span>House take</span>
-                            <span id="bankRaked"></span>
-                        </div>
-                        <div class="bankReconcileRow" id="bankPaidOutRow" hidden>
-                            <span>Paid out</span>
-                            <span id="bankPaidOut"></span>
-                        </div>
-                        <p id="bankReconcileVerdict" class="bankReconcileVerdict"></p>
-                        <button type="button" id="bankRecordBuyInsBtn" class="holdemBtn holdemBtnSmall" hidden></button>
-                    </div>
-
-                    <div id="settleUp" hidden>
-                        <h3 class="panelSubhead">Settle up</h3>
-                        <ul id="settleUpList" class="settleUpList"></ul>
-                        <p id="settleUpNote" class="fieldHint"></p>
-                    </div>
-
-                    <h3 class="panelSubhead">Hands</h3>
-                    <div class="handHistoryFilterRow">
-                        <input id="handHistoryFilter" type="search" class="handHistoryFilter"
-                               placeholder="Find a hand — name, amount or #" aria-label="Filter the hand log by player, amount or hand number" />
-                        <span id="handHistoryCount" class="handHistoryCount" hidden></span>
-                    </div>
-                    <div id="handHistoryList"></div>
-                    <p id="handHistoryNoMatch" class="fieldHint" hidden></p>
-                    <p id="handHistoryEmptyHint" class="fieldHint">Resolved pots are logged here, in case a chip count is disputed later.</p>
-
-                    <div class="handHistoryActions">
-                        <button id="exportHistoryBtn" class="holdemBtn holdemBtnSmall">Export CSV</button>
-                        <button id="clearHistoryBtn" class="holdemBtn holdemBtnSmall holdemBtnDanger">Clear history</button>
-                    </div>
-
-                    <h3 class="panelSubhead">The table itself</h3>
-                    <p class="fieldHint">
-                        The night lives in this browser and nowhere else. Save it to a file to carry it
-                        to another device, or to have something to come back to if this one dies.
-                    </p>
-                    <div class="handHistoryActions">
-                        <button id="saveTableBtn" class="holdemBtn holdemBtnSmall">Save table file</button>
-                        <button id="loadTableBtn" class="holdemBtn holdemBtnSmall">Load table file</button>
-                        <input id="loadTableInput" type="file" accept="application/json,.json" hidden />
-                    </div>
-                </div>
-            </details>
-
-            <details class="sidebarPanel">
-                <summary>Chip Legend</summary>
-                <div class="panelBody">
-                    <div id="chipLegendList"></div>
-                    <button id="addChipColorBtn" class="holdemBtn holdemBtnSmall">+ Add chip color</button>
-                    <p class="fieldHint">Give each chip color a value, then count chips on a seat instead of typing a total.</p>
-
-                    <div id="colourUp" hidden>
-                        <h3 class="panelSubhead">Stacks in chips</h3>
-                        <dl id="colourUpList" class="colourUpList"></dl>
-                        <p class="fieldHint">The fewest chips that make each stack — for colouring up, or counting one out.</p>
-                    </div>
-                </div>
-            </details>
-
-            <details class="sidebarPanel" id="keyboardPanel">
-                <summary>Keyboard</summary>
-                <div class="panelBody">
-                    <dl id="shortcutLegend" class="shortcutLegend"></dl>
-                    <p class="fieldHint">Nothing fires while you're typing in a field, or while a sheet is open over the table.</p>
-                </div>
-            </details>
-
-            <details class="sidebarPanel">
-                <summary>Table Notes</summary>
-                <div class="panelBody">
-                    <textarea id="tableNotes" rows="4" aria-label="Table notes" placeholder="Anything else worth tracking — side bets, IOUs, running totals..."></textarea>
-                </div>
-            </details>
-        </aside>
-    </div>
-</div>
-
-<template id="seatTemplate">
-    <div class="seat" draggable="true">
-        <div class="seatChairNumber"></div>
-        <button class="dealerChip" type="button" title="Make this seat the dealer button">D</button>
-        <span class="blindBadge sbBadge">SB</span>
-        <span class="blindBadge bbBadge">BB</span>
-        <span class="blindBadge strBadge" title="Straddled — the action comes back to this seat">STR</span>
-        <div class="seatPuckName"></div>
-        <div class="seatPuckCards"></div>
-        <div class="seatPuckTotal"></div>
-        <div class="seatPuckStack"></div>
-    </div>
-</template>
-
-<template id="seatEditorTemplate">
-    <div class="seatEditorForm">
-        <label class="fieldRow">
-            <span>Name</span>
-            <input type="text" class="seatNameInput" placeholder="Seat" maxlength="24" />
-        </label>
-        <div class="seatCardToggles">
-            <label class="inHandToggle" title="This seat is playing the current hand">
-                <input type="checkbox" class="inHandCheckbox" />
-                <span>In hand</span>
-            </label>
-            <label class="foldToggle" title="Folded">
-                <input type="checkbox" class="foldCheckbox" />
-                <span>Fold</span>
-            </label>
-        </div>
-        <div class="seatCards">
-            <button type="button" class="cardSlot card1Slot" aria-label="Choose first card"></button>
-            <button type="button" class="cardSlot card2Slot" aria-label="Choose second card"></button>
-        </div>
-        <label class="fieldRow stackRow">
-            <span>Stack</span>
-            <input type="number" class="stackInput" min="0" step="1" placeholder="table default" />
-        </label>
-        <div class="seatBuyIns" hidden></div>
-        <div class="seatContribution">
-            <div class="chipCounts"></div>
-            <label class="fieldRow amountOverrideRow">
-                <span>$ amount</span>
-                <input type="number" class="amountOverrideInput" min="0" step="1" placeholder="auto" />
-            </label>
-            <div class="seatTotal">Total: <span class="seatTotalAmount">$0</span></div>
-        </div>
-        <div class="customFields"></div>
-        <button class="holdemBtn holdemBtnSmall addFieldBtn">+ field</button>
-    </div>
-</template>
-
-<template id="chipLegendRowTemplate">
-    <div class="chipLegendRow">
-        <input type="color" class="chipColorInput" aria-label="Chip colour" />
-        <input type="number" class="chipValueInput" min="0" step="0.01" placeholder="value" aria-label="Chip value" />
-        <button class="holdemBtn holdemBtnSmall holdemBtnDanger removeChipColorBtn">×</button>
-    </div>
-</template>
-
-<template id="chipCountTemplate">
-    <label class="chipCountRow">
-        <span class="chipSwatch"></span>
-        <input type="number" class="chipCountInput" min="0" step="1" value="0" />
-    </label>
-</template>
-
-<template id="customFieldTemplate">
-    <div class="customFieldRow">
-        <input type="text" class="customFieldLabel" placeholder="Label" maxlength="20" />
-        <input type="text" class="customFieldValue" placeholder="Value" maxlength="40" />
-        <button class="holdemBtn holdemBtnSmall holdemBtnDanger removeFieldBtn">×</button>
-    </div>
-</template>
-
-<template id="standingsRowTemplate">
-    <div class="standingsRow">
-        <span class="standingsName"></span>
-        <span class="standingsIn"></span>
-        <span class="standingsWon"></span>
-        <span class="standingsNet"></span>
-        <span class="standingsChips"></span>
-        <span class="standingsCashOut"></span>
-    </div>
-</template>
-
-<template id="handHistoryRowTemplate">
-    <div class="handHistoryRow">
-        <div class="handHistoryRowHeader">
-            <span class="handHistoryHandNumber"></span>
-            <span class="handHistoryPot"></span>
-            <span class="handHistoryTime"></span>
-        </div>
-        <div class="handHistoryPayouts"></div>
-    </div>
-</template>
-
-<div id="addChipsOverlay" hidden>
-    <div id="addChipsSheet" role="dialog" aria-labelledby="addChipsTitle">
-        <div class="seatSheetGrip" aria-hidden="true"></div>
-        <div class="addChipsHeader">
-            <h2 id="addChipsTitle"></h2>
-            <span id="addChipsSubtitle"></span>
-        </div>
-        <div id="addChipsQuick"></div>
-        <div class="addChipsEntry">
-            <span class="addChipsCurrency">$</span>
-            <input type="text" id="addChipsInput" inputmode="decimal" autocomplete="off" aria-label="Amount to add" />
-        </div>
-        <div class="addChipsActions">
-            <button id="addChipsConfirmBtn" class="holdemBtn holdemBtnAccent" type="button">Add to stack</button>
-            <button id="addChipsCancelBtn" data-modal-close class="holdemBtn holdemBtnGhost" type="button">Cancel</button>
-        </div>
-    </div>
-</div>
-
-<div id="rulingsOverlay" hidden>
-    <div id="rulingsSheet" role="dialog" aria-labelledby="rulingsTitle">
-        <div class="seatSheetGrip" aria-hidden="true"></div>
-        <div class="rulingsHeader">
-            <h2 id="rulingsTitle">Common rulings</h2>
-            <button id="closeRulingsBtn" data-modal-close class="holdemBtn holdemBtnSmall holdemBtnGhost" type="button">Done</button>
-        </div>
-
-        <p class="rulingsIntro">
-            The conventions most rooms follow, for the calls that come up mid-hand.
-            Your house rules always win — and settle a dispute before the next hand,
-            not during it.
-        </p>
-
-        <nav id="rulingsIndex" class="rulingsIndex" aria-label="Jump to a ruling"></nav>
-
-        <section class="ruling" data-short="Misdeal">
-            <h3>Redeal it — misdeal</h3>
-            <ul>
-                <li>The first card goes to the wrong seat.</li>
-                <li>A seat entitled to a hand gets dealt out, or a seat that isn't entitled gets dealt in.</li>
-                <li>Two or more boxed cards turn up on the initial deal.</li>
-                <li>Either of the first two cards is exposed by dealer error.</li>
-            </ul>
-        </section>
-
-        <section class="ruling" data-short="Board card early">
-            <h3>A board card turned too early</h3>
-            <p>
-                If the fourth board card gets turned before the betting round is finished,
-                that card is out of play for the round. Finish the betting, then burn and
-                turn what would have been the fifth card in the fourth card's place.
-            </p>
-        </section>
-
-        <section class="ruling" data-short="Out of turn">
-            <h3>Acting out of turn</h3>
-            <p>
-                A one-off is usually just backed up if no one has acted behind them.
-                Doing it repeatedly is what earns a penalty.
-            </p>
-        </section>
-
-        <section class="ruling" data-short="Clock">
-            <h3>Calling the clock on a player</h3>
-            <p>
-                Any player may ask for a clock once a decision is taking unreasonably
-                long; it is the dealer, not the table, who grants it. The player then
-                gets a set time and a countdown out loud — thirty seconds and ten is the
-                usual form.
-            </p>
-            <p>
-                If the count reaches zero with no action, the hand is <em>dead</em> if
-                they were facing a bet, and <em>checked</em> if they were not: nobody is
-                folded for slowness when checking was free. The action bar runs the
-                count once you tap <em>Call the clock</em>, and offers the ruling as one
-                button when it ends.
-            </p>
-        </section>
-
-        <section class="ruling" data-short="Straddle">
-            <h3>A straddle is a blind raise</h3>
-            <p>
-                The player left of the big blind may put out twice it before the cards,
-                without looking. It is a blind bet, not a raise made in turn, so it does
-                three things at once: everyone else acts first, the minimum raise becomes
-                twice the straddle, and the straddler still has the option when the
-                action comes back — they may raise even if nobody raised into them.
-            </p>
-            <p>
-                Re-straddles carry on to the left, each doubling again, and stop before
-                the small blind. Tap <em>Straddle</em> on the deal prompt and the tool
-                posts it, puts the right player on the clock and prices the raise;
-                the seat wears an <em>STR</em> badge for the hand.
-            </p>
-        </section>
-
-        <section class="ruling" data-short="Short all-in">
-            <h3>A short all-in doesn't reopen the betting</h3>
-            <p>
-                Somebody shoving in less than a full raise — say $3 more when the last
-                raise was $8 — does not give the players behind them another go. Anyone
-                who has already acted owes the difference or folds; they don't get to
-                raise again because a short stack happened to land between them.
-            </p>
-            <p>
-                A player who hadn't acted yet keeps full rights and may still raise, and
-                the minimum raise stays measured off the last <em>full</em> raise, not
-                off the short one. The action bar follows this for you.
-            </p>
-        </section>
-
-        <section class="ruling" data-short="Uncalled bet">
-            <h3>Chips nobody called come back</h3>
-            <p>
-                Bet more than anyone was able to call and the excess is returned to you
-                before the showdown — it was never contested, so it isn't part of the
-                pot. The pot breakdown shows it as "uncalled" rather than pretending it's
-                a side pot you could win.
-            </p>
-        </section>
-
-        <section class="ruling" data-short="Oversized chip">
-            <h3>One big chip, nothing said</h3>
-            <p>
-                The most common argument at a home table. A player facing a bet who
-                pushes out a single oversized chip without saying anything has
-                <em>called</em> — not raised, however big the chip is. To raise with one
-                chip you have to say "raise" before it lands; say it without an amount
-                and the raise is the most that chip allows.
-            </p>
-            <p>
-                Facing no bet, the same silent chip is a bet of the whole chip. And a
-                clear verbal declaration in turn is binding either way — if words and
-                chips disagree, whichever came first is the action.
-            </p>
-        </section>
-
-        <section class="ruling" data-short="Minimum raise">
-            <h3>A raise has to be a full raise</h3>
-            <p>
-                At least as much again as the last raise, or the big blind if there
-                hasn't been one. Anything between a call and that minimum isn't a raise
-                a player can make — it's a call, unless they're putting their last chips
-                in. The raise pad says so if you type one, and won't stop you: your
-                ruling beats the arithmetic.
-            </p>
-        </section>
-
-        <section class="ruling" data-short="Who shows first">
-            <h3>Who turns their hand over first</h3>
-            <p>
-                If there was a bet on the river, the last player to bet or raise shows
-                first. If the river was checked all the way round, it's the first live
-                player left of the button. Nobody has to be asked twice — a player may
-                always turn their hand over early if they want to.
-            </p>
-            <p>
-                When everyone is all-in before the river there was no final round to
-                lead, so it falls to whoever last put money in, on whichever street that
-                was. The action bar names the seat and the reason at every showdown, so
-                the call is already made before anyone asks.
-            </p>
-        </section>
-
-        <section class="ruling" data-short="Odd chip">
-            <h3>The odd chip in a split pot</h3>
-            <p>
-                When a chopped pot won't divide evenly, the odd chip goes to the first
-                player left of the button, not to whoever the dealer happened to tick
-                first. Pot payouts here order the winners that way, so the leftover lands
-                on the right seat every time.
-            </p>
-        </section>
-
-        <section class="ruling" data-short="String bet">
-            <h3>Betting in one motion — the string bet</h3>
-            <p>
-                A bet is whatever goes in on the first trip to the stack, unless the
-                amount was said out loud first. Reaching back for more chips without
-                having said "raise" is a string bet, and only the first motion stands.
-                Saying the number is always enough on its own: "raise to sixty" binds
-                whatever order the chips arrive in.
-            </p>
-            <p>
-                It's the rule home games invoke most and enforce least, and both are
-                fine — the point is that a player can't watch the table react and then
-                decide how much to bet. Say it, or push it all at once.
-            </p>
-        </section>
-
-        <p class="rulingsSource">
-            Follows the Tournament Directors Association rules, which most rooms and
-            home games take their lead from.
-        </p>
-    </div>
-</div>
-
-<div id="seatMenuOverlay" hidden>
-    <div id="seatMenuSheet" role="dialog" aria-labelledby="seatMenuTitle">
-        <div class="seatSheetGrip" aria-hidden="true"></div>
-        <div class="seatMenuHeader">
-            <h2 id="seatMenuTitle"></h2>
-            <span id="seatMenuSubtitle"></span>
-        </div>
-        <div id="seatMenuActions"></div>
-        <button id="seatMenuCancelBtn" data-modal-close class="holdemBtn holdemBtnGhost" type="button">Cancel</button>
-    </div>
-</div>
-
-<div id="cardPickerOverlay" hidden>
-    <div id="cardPickerSheet" role="dialog" aria-labelledby="cardPickerTitle">
-        <div class="seatSheetGrip" aria-hidden="true"></div>
-        <div class="cardPickerHeader">
-            <h2 id="cardPickerTitle"></h2>
-            <button id="cardPickerClearBtn" class="holdemBtn holdemBtnSmall" type="button">Clear</button>
-            <button id="cardPickerCloseBtn" data-modal-close class="holdemBtn holdemBtnSmall holdemBtnGhost" type="button">Done</button>
-        </div>
-        <div id="cardPickerSlots"></div>
-        <div id="cardPickerGrid"></div>
-    </div>
-</div>
-
-<div id="actionBar" aria-live="polite" hidden></div>
-
-<div id="toastHost" aria-live="polite"></div>
-
-<div id="confirmOverlay" hidden>
-    <div id="confirmModal" role="alertdialog" aria-labelledby="confirmTitle" aria-describedby="confirmMessage" tabindex="-1">
-        <h2 id="confirmTitle"></h2>
-        <p id="confirmMessage"></p>
-        <div class="confirmActions">
-            <button id="confirmCancelBtn" data-modal-close class="holdemBtn holdemBtnGhost" type="button">Cancel</button>
-            <button id="confirmAcceptBtn" class="holdemBtn holdemBtnDanger" type="button">Confirm</button>
-        </div>
-    </div>
-</div>
-
-<div id="potWizardOverlay" hidden>
-    <div id="potWizardModal" role="dialog" aria-labelledby="potWizardTitle">
-        <div class="potWizardHeader">
-            <h2 id="potWizardTitle">Resolve the Pot</h2>
-            <button id="closePotWizardBtn" data-modal-close class="holdemBtn holdemBtnGhost">✕</button>
-        </div>
-        <div id="potWizardBody"></div>
-    </div>
-</div>
-
-@section Styles {
-    <link href="/css/casino/holdem.css?v=@ViewData["cssVersion"]" rel="stylesheet" type="text/css" />
-}
-
-@section Scripts {
-    <script src="~/js/casino/holdem/money.js?v=@ViewData["cssVersion"]"></script>
-    <script src="~/js/casino/holdem/feedback.js?v=@ViewData["cssVersion"]"></script>
-    <script src="~/js/casino/holdem/potCalculator.js?v=@ViewData["cssVersion"]"></script>
-    <script src="~/js/casino/holdem/state.js?v=@ViewData["cssVersion"]"></script>
-    <script src="~/js/casino/holdem/settleUp.js?v=@ViewData["cssVersion"]"></script>
-    <script src="~/js/casino/holdem/render.js?v=@ViewData["cssVersion"]"></script>
-    <script src="~/js/casino/holdem/cardPicker.js?v=@ViewData["cssVersion"]"></script>
-    <script src="~/js/casino/holdem/seatMenu.js?v=@ViewData["cssVersion"]"></script>
-    <script src="~/js/casino/holdem/addChips.js?v=@ViewData["cssVersion"]"></script>
-    <script src="~/js/casino/holdem/betting.js?v=@ViewData["cssVersion"]"></script>
-    <script src="~/js/casino/holdem/actionBar.js?v=@ViewData["cssVersion"]"></script>
-    <script src="~/js/casino/holdem/shortcuts.js?v=@ViewData["cssVersion"]"></script>
-    <script src="~/js/casino/holdem/potWizard.js?v=@ViewData["cssVersion"]"></script>
-    <script src="~/js/casino/holdem/handHistoryExport.js?v=@ViewData["cssVersion"]"></script>
-    <script src="~/js/casino/holdem/modal.js?v=@ViewData["cssVersion"]"></script>
-    <script src="~/js/casino/holdem/main.js?v=@ViewData["cssVersion"]"></script>
-}

JoshHeaps.Net/Pages/Casino/TexasHoldem.cshtml.cs

@@ -1,11 +0,0 @@
-using Microsoft.AspNetCore.Mvc.RazorPages;
-
-namespace JoshHeaps.Net.Pages.Casino
-{
-    public class TexasHoldemModel : PageModel
-    {
-        public void OnGet()
-        {
-        }
-    }
-}

JoshHeaps.Net/Pages/Casino/TexasHoldem/QuickSplit.cshtml

@@ -1,95 +0,0 @@
-@page
-@model JoshHeaps.Net.Pages.Casino.TexasHoldem.QuickSplitModel
-@{
-    ViewData["Title"] = "Quick Split";
-    Layout = "_Layout";
-}
-
-<div id="splitApp">
-    <header id="splitHeader">
-        <h1>Quick Split</h1>
-        <p class="splitSubtitle">Chop a pot without setting up a table.</p>
-    </header>
-
-    <div id="modeToggle" class="chipRow" role="group" aria-label="How the money went in">
-        <button type="button" id="modeEvenBtn" class="choiceChip selected">Everyone matched</button>
-        <button type="button" id="modeUnevenBtn" class="choiceChip">Someone's all-in</button>
-    </div>
-
-    <div id="splitResult" aria-live="polite">
-        <div id="splitResultLabel">Each player gets</div>
-        <div id="splitResultAmount">$0.00</div>
-        <div id="splitOddNote" hidden></div>
-        <div id="splitDustNote" hidden></div>
-    </div>
-
-    <div id="unevenResult" hidden aria-live="polite">
-        <div id="unevenPots"></div>
-        <p id="unevenEmpty" class="unevenEmpty">Enter what each player put in.</p>
-    </div>
-
-    <section class="splitField unevenOnly" hidden>
-        <span class="splitLabel">What each player put in</span>
-        <div id="unevenRows"></div>
-        <button type="button" id="addPlayerBtn" class="splitBtn splitBtnGhost">+ Add player</button>
-    </section>
-
-    <section class="splitField evenOnly">
-        <label for="potInput" class="splitLabel">Pot</label>
-        <div class="potInputWrap">
-            <span class="potCurrency">$</span>
-            <input type="text" id="potInput" inputmode="decimal" autocomplete="off"
-                   placeholder="0" aria-label="Pot amount" />
-            <button type="button" id="clearPotBtn" class="clearPotBtn" aria-label="Clear pot amount" hidden>✕</button>
-        </div>
-    </section>
-
-    <section class="splitField evenOnly">
-        <span class="splitLabel" id="waysLabel">Split between</span>
-        <div id="waysChoices" class="chipRow" role="group" aria-labelledby="waysLabel"></div>
-    </section>
-
-    <section class="splitField evenOnly">
-        <span class="splitLabel" id="chipLabel">Smallest chip in play</span>
-        <div id="chipChoices" class="chipRow" role="group" aria-labelledby="chipLabel"></div>
-    </section>
-
-    <div id="splitActions">
-        <button type="button" id="resetSplitBtn" class="splitBtn splitBtnGhost">Clear</button>
-        <a href="/casino/texasholdem" class="splitBtn splitBtnGhost">Full dealer table →</a>
-    </div>
-
-    <p class="splitFootnote evenOnly">
-        If somebody was all-in for less than the others, switch to
-        <strong>Someone's all-in</strong> above.
-    </p>
-
-    <p class="splitFootnote unevenOnly" hidden>
-        Pots are listed with who can win each. Award them by hand strength, best hand
-        first. Nothing here is saved — the <a href="/casino/texasholdem">full table</a>
-        keeps a log.
-    </p>
-</div>
-
-<template id="unevenRowTemplate">
-    <div class="unevenRow">
-        <span class="unevenRowLabel"></span>
-        <div class="unevenAmountWrap">
-            <span class="unevenCurrency">$</span>
-            <input type="text" class="unevenAmount" inputmode="decimal" autocomplete="off" placeholder="0" />
-        </div>
-        <button type="button" class="unevenFoldBtn" aria-pressed="false">Folded</button>
-        <button type="button" class="unevenRemoveBtn" aria-label="Remove player">✕</button>
-    </div>
-</template>
-
-@section Styles {
-    <link href="/css/casino/quicksplit.css?v=@ViewData["cssVersion"]" rel="stylesheet" type="text/css" />
-}
-
-@section Scripts {
-    <script src="~/js/casino/holdem/money.js?v=@ViewData["cssVersion"]"></script>
-    <script src="~/js/casino/holdem/splitCalculator.js?v=@ViewData["cssVersion"]"></script>
-    <script src="~/js/casino/holdem/potCalculator.js?v=@ViewData["cssVersion"]"></script>
-    <script src="~/js/casino/holdem/quickSplit.js?v=@ViewData["cssVersion"]"></script>
-}

JoshHeaps.Net/Pages/Casino/TexasHoldem/QuickSplit.cshtml.cs

@@ -1,11 +0,0 @@
-using Microsoft.AspNetCore.Mvc.RazorPages;
-
-namespace JoshHeaps.Net.Pages.Casino.TexasHoldem
-{
-    public class QuickSplitModel : PageModel
-    {
-        public void OnGet()
-        {
-        }
-    }
-}

JoshHeaps.Net/Pages/Echo.cshtml

@@ -0,0 +1,70 @@
+@page
+@model JoshHeaps.Net.Pages.EchoModel
+@{
+    Layout = "_Layout";
+    ViewData["Title"] = "Echo";
+}
+
+<div id="echoHeader">
+    <h1>Echo</h1>
+    <p class="echo-blurb">
+        Two devices measure the distance between them by chirping at each other and timing the answer.
+        Each one records continuously and only ever compares arrivals inside its own recording, so no
+        clock synchronisation is needed and the unknown audio latency cancels out.
+    </p>
+    <p class="echo-privacy">Only sample numbers leave your device. The recording never does.</p>
+</div>
+
+<div id="echoControls">
+    <label>Room <input id="echoRoom" type="text" maxlength="6" autocomplete="off" spellcheck="false" /></label>
+    <label>Name <input id="echoName" type="text" maxlength="16" placeholder="this device" autocomplete="off" /></label>
+    <label>
+        Speaker to mic (m)
+        <input id="echoEpsilon" type="number" min="0" max="0.5" step="0.01" />
+    </label>
+    <button id="echoJoin">Join and listen</button>
+    <button id="echoLeave" hidden>Leave</button>
+</div>
+
+<p id="echoStatus" class="echo-status">Pick a room, then open the same room on a second device.</p>
+<p class="echo-share">Join link: <a id="echoShareLink" href="#"></a></p>
+<div id="echoWarnings"></div>
+
+<div id="echoReadout" class="echo-readout"><span class="echo-readout-idle">not measuring</span></div>
+
+<div id="echoPanels">
+    <section class="echo-panel">
+        <h2>Devices</h2>
+        <ul id="echoRoster"></ul>
+    </section>
+    <section class="echo-panel">
+        <h2>Ranges</h2>
+        <div id="echoPairs"></div>
+    </section>
+    <section class="echo-panel">
+        <h2>Timing</h2>
+        <p class="echo-hint">How far each chirp landed from its slot. Steady means the arrivals are being matched to the right devices.</p>
+        <div id="echoDiagnostics"></div>
+    </section>
+</div>
+
+<section class="echo-panel echo-panel-wide">
+    <h2>Matched filter</h2>
+    <p class="echo-hint">Each spike is a chirp arriving. The bright one is this device hearing itself.</p>
+    <canvas id="echoTrace"></canvas>
+</section>
+
+<a class="echo-back" href="/">&larr; Back</a>
+
+@section Scripts {
+    <script src="~/js/signalr/signalr.min.js"></script>
+    <script src="~/js/EchoScripts/EchoDsp.js"></script>
+    <script src="~/js/EchoScripts/EchoAudio.js"></script>
+    <script src="~/js/EchoScripts/EchoSession.js"></script>
+    <script src="~/js/EchoScripts/echoMain.js"></script>
+}
+
+@section Styles {
+    <link rel="stylesheet" href="~/css/variables.css?v=@ViewData["cssVersion"]" />
+    <link rel="stylesheet" href="~/css/echo/echo.css?v=@ViewData["cssVersion"]" />
+}

JoshHeaps.Net/Pages/Echo.cshtml.cs

@@ -2,7 +2,7 @@ using Microsoft.AspNetCore.Mvc.RazorPages;
 
 namespace JoshHeaps.Net.Pages
 {
-    public class CasinoModel : PageModel
+    public class EchoModel : PageModel
     {
         public void OnGet()
         {

JoshHeaps.Net/Pages/Index.cshtml

@@ -64,7 +64,6 @@
         <button class="demoButton" onclick="window.location.href='/watch'">Watch Live Chess</button>
         <button class="demoButton" onclick="window.location.href='/particles'">Particle Simulator</button>
         <button class="demoButton" onclick="window.location.href='/memorylane'">Memory Lane</button>
-        <button class="demoButton" onclick="window.location.href='/casino'">Casino Games</button>
         <button class="demoButton" onclick="window.location.href='https://media.joshheaps.net'">Cloud Image Storage</button>
         <button id="MoreFiller" class="demoButton">More coming soon...</button>
     </div>

JoshHeaps.Net/Pages/_Layout.cshtml

@@ -1,6 +1,6 @@
 @{
     Layout = null;
-    ViewData["cssVersion"] = "1.0.8"; // <--- change this once to bust cache
+    ViewData["cssVersion"] = "1.0.7"; // <--- change this once to bust cache
 }
 
 <!DOCTYPE html>

JoshHeaps.Net/Program.cs

@@ -1,6 +1,7 @@
 using JoshHeaps.Net.Hubs;
 using JoshHeaps.Net.Services.Implementations;
 using JoshHeaps.Net.Services.Interfaces;
+using Microsoft.Extensions.Options;
 
 var builder = WebApplication.CreateBuilder(args);
 
@@ -30,6 +31,12 @@ builder.Services.AddSingleton<IGameStore, GameStore>();
 builder.Services.AddSingleton<ISelfPlayCoordinator, SelfPlayCoordinator>();
 builder.Services.AddSingleton<AutoTrainingSettings>();
 
+builder.Services.Configure<EchoRoundSettings>(configuration.GetSection(EchoRoundSettings.SectionName));
+builder.Services.AddSingleton(provider =>
+    provider.GetRequiredService<IOptions<EchoRoundSettings>>().Value);
+builder.Services.AddSingleton<IEchoRoomStore, EchoRoomStore>();
+builder.Services.AddHostedService<EchoRoundService>();
+
 if (!builder.Environment.IsDevelopment())
 {
     builder.Services.AddHostedService<AutoIpUpdateService>();
@@ -72,4 +79,6 @@ app.MapControllers();
 
 app.MapHub<ChessHub>("/chessHub");
 
+app.MapHub<EchoHub>("/echoHub");
+
 app.Run();

JoshHeaps.Net/Services/Implementations/BlogService.cs

@@ -1,4 +1,4 @@
-using System.Collections.Concurrent;
+using System.Collections.Concurrent;
 using System.Text.Json;
 using JoshHeaps.Net.Models;
 using JoshHeaps.Net.Services.Interfaces;
@@ -10,7 +10,6 @@ public class BlogService : IBlogService
     private readonly HttpClient _httpClient;
     private readonly ILogger<BlogService> _logger;
     private readonly TimeSpan _cacheTtl = TimeSpan.FromMinutes(5);
-    private readonly TimeSpan _staleGrace = TimeSpan.FromHours(1);
 
     private readonly ConcurrentDictionary<string, CacheEntry> _cache = new();
 
@@ -66,9 +65,7 @@ public class BlogService : IBlogService
 
     private async Task<T?> GetCachedAsync<T>(string key, Func<Task<T?>> factory) where T : class
     {
-        _cache.TryGetValue(key, out var entry);
-
-        if (entry is not null && entry.ExpiresAt > DateTime.UtcNow)
+        if (_cache.TryGetValue(key, out var entry) && entry.ExpiresAt > DateTime.UtcNow)
             return (T?)entry.Value;
 
         var result = await factory();
@@ -76,26 +73,15 @@ public class BlogService : IBlogService
         if (result is not null)
         {
             _cache[key] = new CacheEntry(result, DateTime.UtcNow.Add(_cacheTtl));
-            return result;
         }
-
-        return entry is null ? null : ServeStale<T>(key, entry);
-    }
-
-    // Stale entries are dropped once the grace window closes so that a dead API fails the same
-    // way for every key. Serving them indefinitely let a cached post list render next to 404s on
-    // the posts themselves, which reads as a site bug rather than an outage.
-    private T? ServeStale<T>(string key, CacheEntry entry) where T : class
-    {
-        if (entry.ExpiresAt.Add(_staleGrace) > DateTime.UtcNow)
+        else if (entry is not null)
         {
-            _logger.LogWarning("Blog API unreachable, serving stale cache for key {Key}", key);
+            // API unreachable — serve stale cache
+            _logger.LogWarning("Serving stale cache for key {Key}", key);
             return (T?)entry.Value;
         }
 
-        _cache.TryRemove(key, out _);
-        _logger.LogError("Blog API unreachable for over {StaleGrace}, dropping stale cache for key {Key}", _staleGrace, key);
-        return null;
+        return result;
     }
 
     public void ClearCache()

JoshHeaps.Net/Services/Implementations/EchoRoomStore.cs

@@ -0,0 +1,189 @@
+using System.Collections.Concurrent;
+using JoshHeaps.Net.Models;
+using JoshHeaps.Net.Services.Interfaces;
+
+namespace JoshHeaps.Net.Services.Implementations;
+
+/// <summary>
+/// In-memory ranging rooms. Singleton: rooms are process-wide and short-lived, and the site runs
+/// as a single instance, so there is nothing to persist and no backplane to coordinate.
+/// </summary>
+public sealed class EchoRoomStore : IEchoRoomStore
+{
+    private sealed class Room
+    {
+        public required string Code { get; init; }
+        public List<EchoDevice> Devices { get; } = [];
+        public EchoRound? Round { get; set; }
+        public int RoundCounter { get; set; }
+        public DateTimeOffset LastActivity { get; set; } = DateTimeOffset.UtcNow;
+    }
+
+    private readonly ConcurrentDictionary<string, Room> _rooms = new(StringComparer.OrdinalIgnoreCase);
+    private readonly ConcurrentDictionary<string, string> _roomsByConnection = [];
+
+    public EchoJoinResult Join(string roomCode, string connectionId, string displayName, int sampleRate)
+    {
+        var room = _rooms.GetOrAdd(roomCode, code => new Room { Code = code });
+        var device = new EchoDevice
+        {
+            DeviceId = Guid.NewGuid().ToString("N")[..8],
+            ConnectionId = connectionId,
+            DisplayName = displayName,
+            SampleRate = sampleRate
+        };
+
+        lock (room)
+        {
+            room.Devices.RemoveAll(existing => existing.ConnectionId == connectionId);
+            room.Devices.Add(device);
+            room.LastActivity = DateTimeOffset.UtcNow;
+            _roomsByConnection[connectionId] = room.Code;
+
+            return new EchoJoinResult { DeviceId = device.DeviceId, RoomCode = room.Code, Room = SnapshotLocked(room) };
+        }
+    }
+
+    public (string? roomCode, EchoRoomSnapshot? room) Leave(string connectionId)
+    {
+        if (!_roomsByConnection.TryRemove(connectionId, out var roomCode)) return (null, null);
+        if (!_rooms.TryGetValue(roomCode, out var room)) return (roomCode, null);
+
+        lock (room)
+        {
+            room.Devices.RemoveAll(device => device.ConnectionId == connectionId);
+            room.Round = null;
+            room.LastActivity = DateTimeOffset.UtcNow;
+
+            if (room.Devices.Count == 0) _rooms.TryRemove(roomCode, out _);
+
+            return (roomCode, SnapshotLocked(room));
+        }
+    }
+
+    public EchoRoomSnapshot? Snapshot(string roomCode)
+    {
+        if (!_rooms.TryGetValue(roomCode, out var room)) return null;
+
+        lock (room) return SnapshotLocked(room);
+    }
+
+    public IReadOnlyCollection<string> MeasurableRooms =>
+        [.. _rooms.Values.Where(room => room.Devices.Count >= 2).Select(room => room.Code)];
+
+    public EchoRoundSchedule? StartRound(
+        string roomCode,
+        int slotMilliseconds,
+        int tailMilliseconds,
+        TimeSpan lead,
+        TimeSpan grace)
+    {
+        if (!_rooms.TryGetValue(roomCode, out var room)) return null;
+
+        lock (room)
+        {
+            if (room.Round is not null || room.Devices.Count < 2) return null;
+
+            var slotOrder = RotatedSlotOrder(room);
+            var startsAt = DateTimeOffset.UtcNow + lead;
+            var duration = TimeSpan.FromMilliseconds(slotOrder.Length * slotMilliseconds + tailMilliseconds);
+
+            room.Round = new EchoRound
+            {
+                RoundId = Guid.NewGuid().ToString("N")[..12],
+                SlotOrder = slotOrder,
+                SlotMilliseconds = slotMilliseconds,
+                Deadline = startsAt + duration + grace
+            };
+            room.LastActivity = DateTimeOffset.UtcNow;
+
+            return new EchoRoundSchedule
+            {
+                RoundId = room.Round.RoundId,
+                SlotOrder = slotOrder,
+                SlotMilliseconds = slotMilliseconds,
+                TailMilliseconds = tailMilliseconds,
+                StartsAtUnixMs = startsAt.ToUnixTimeMilliseconds()
+            };
+        }
+    }
+
+    public bool Report(string connectionId, EchoPeakReport report)
+    {
+        var device = FindDevice(connectionId, out var room);
+        if (device is null || room is null) return false;
+
+        lock (room)
+        {
+            if (room.Round?.RoundId != report.RoundId) return false;
+            if (!room.Round.SlotOrder.Contains(device.DeviceId)) return false;
+
+            room.Round.Reports[device.DeviceId] = report;
+            room.LastActivity = DateTimeOffset.UtcNow;
+            return true;
+        }
+    }
+
+    public EchoRoundResult? TryCloseRound(string roomCode)
+    {
+        if (!_rooms.TryGetValue(roomCode, out var room)) return null;
+
+        lock (room)
+        {
+            var round = room.Round;
+            if (round is null) return null;
+
+            var everyoneReported = round.SlotOrder.All(round.Reports.ContainsKey);
+            if (!everyoneReported && DateTimeOffset.UtcNow < round.Deadline) return null;
+
+            room.Round = null;
+
+            return new EchoRoundResult
+            {
+                RoundId = round.RoundId,
+                SlotOrder = round.SlotOrder,
+                Reports = [.. round.SlotOrder.Where(round.Reports.ContainsKey).Select(id => round.Reports[id])]
+            };
+        }
+    }
+
+    public int PruneIdle(TimeSpan idleFor)
+    {
+        var cutoff = DateTimeOffset.UtcNow - idleFor;
+        var stale = _rooms.Values.Where(room => room.LastActivity < cutoff).Select(room => room.Code).ToList();
+
+        foreach (var code in stale) _rooms.TryRemove(code, out _);
+
+        return stale.Count;
+    }
+
+    private static EchoRoomSnapshot SnapshotLocked(Room room) =>
+        new()
+        {
+            RoomCode = room.Code,
+            Devices =
+            [
+                .. room.Devices.Select(device => new EchoDeviceSnapshot
+                {
+                    DeviceId = device.DeviceId,
+                    DisplayName = device.DisplayName,
+                    SampleRate = device.SampleRate
+                })
+            ]
+        };
+
+    private static string[] RotatedSlotOrder(Room room)
+    {
+        var offset = room.RoundCounter++ % room.Devices.Count;
+        return [.. room.Devices.Skip(offset).Concat(room.Devices.Take(offset)).Select(device => device.DeviceId)];
+    }
+
+    private EchoDevice? FindDevice(string connectionId, out Room? room)
+    {
+        room = null;
+        if (!_roomsByConnection.TryGetValue(connectionId, out var roomCode)) return null;
+        if (!_rooms.TryGetValue(roomCode, out room)) return null;
+
+        lock (room) return room.Devices.FirstOrDefault(device => device.ConnectionId == connectionId);
+    }
+}

JoshHeaps.Net/Services/Implementations/EchoRoundService.cs

@@ -0,0 +1,107 @@
+using JoshHeaps.Net.Hubs;
+using JoshHeaps.Net.Services.Interfaces;
+using Microsoft.AspNetCore.SignalR;
+
+namespace JoshHeaps.Net.Services.Implementations;
+
+public sealed class EchoRoundSettings
+{
+    public const string SectionName = "Echo";
+
+    /// <summary>
+    /// Slot length. Wide enough that no device's chirp can land in another's search window once
+    /// unknown output latency (tens of milliseconds, different per device) and message jitter are
+    /// accounted for.
+    /// </summary>
+    public int SlotMilliseconds { get; set; } = 500;
+
+    /// <summary>Time after the last chirp for propagation, detection and reporting.</summary>
+    public int TailMilliseconds { get; set; } = 700;
+
+    public int GraceMilliseconds { get; set; } = 1500;
+    public int GapMilliseconds { get; set; } = 250;
+    public int IdleRoomMinutes { get; set; } = 10;
+
+    /// <summary>
+    /// How far ahead a round is announced. Must exceed the worst message delivery plus client
+    /// stall, or a device will find its slot already gone and sit the round out.
+    /// </summary>
+    public int LeadMilliseconds { get; set; } = 600;
+}
+
+/// <summary>
+/// Drives continuous ranging: opens a round for every room that has two or more devices, closes it
+/// once everyone has reported or the deadline passes, and broadcasts the raw peak table.
+/// </summary>
+public sealed class EchoRoundService(
+    IEchoRoomStore rooms,
+    IHubContext<EchoHub> hub,
+    EchoRoundSettings settings,
+    ILogger<EchoRoundService> logger) : BackgroundService
+{
+    private readonly Dictionary<string, DateTimeOffset> _nextRoundAllowedAt = [];
+
+    protected override async Task ExecuteAsync(CancellationToken stoppingToken)
+    {
+        var lastPrune = DateTimeOffset.UtcNow;
+
+        while (!stoppingToken.IsCancellationRequested)
+        {
+            try
+            {
+                await TickAsync();
+                lastPrune = PruneIfDue(lastPrune);
+            }
+            catch (Exception error)
+            {
+                logger.LogError(error, "Echo round tick failed");
+            }
+
+            await Task.Delay(50, stoppingToken);
+        }
+    }
+
+    private async Task TickAsync()
+    {
+        foreach (var roomCode in rooms.MeasurableRooms)
+        {
+            await CloseFinishedRoundAsync(roomCode);
+            await OpenRoundIfDueAsync(roomCode);
+        }
+    }
+
+    private async Task CloseFinishedRoundAsync(string roomCode)
+    {
+        var result = rooms.TryCloseRound(roomCode);
+        if (result is null) return;
+
+        _nextRoundAllowedAt[roomCode] = DateTimeOffset.UtcNow.AddMilliseconds(settings.GapMilliseconds);
+        await hub.Clients.Group(EchoHub.GroupFor(roomCode)).SendAsync("RoundComplete", result);
+    }
+
+    private async Task OpenRoundIfDueAsync(string roomCode)
+    {
+        if (_nextRoundAllowedAt.TryGetValue(roomCode, out var earliest) && DateTimeOffset.UtcNow < earliest) return;
+
+        var schedule = rooms.StartRound(
+            roomCode,
+            settings.SlotMilliseconds,
+            settings.TailMilliseconds,
+            TimeSpan.FromMilliseconds(settings.LeadMilliseconds),
+            TimeSpan.FromMilliseconds(settings.GraceMilliseconds));
+
+        if (schedule is null) return;
+
+        await hub.Clients.Group(EchoHub.GroupFor(roomCode)).SendAsync("RoundStarting", schedule);
+    }
+
+    private DateTimeOffset PruneIfDue(DateTimeOffset lastPrune)
+    {
+        if (DateTimeOffset.UtcNow - lastPrune < TimeSpan.FromMinutes(1)) return lastPrune;
+
+        var pruned = rooms.PruneIdle(TimeSpan.FromMinutes(settings.IdleRoomMinutes));
+        if (pruned > 0) logger.LogInformation("Pruned {Count} idle echo room(s)", pruned);
+
+        return DateTimeOffset.UtcNow;
+    }
+}

JoshHeaps.Net/Services/Implementations/Stockfish.cs

@@ -100,26 +100,11 @@ public sealed class Stockfish : IChessEngine
             if (line == token) break;
     }
 
-    // If Stockfish doesn't exit on "quit" (crashed, zombie, ignores stdin close), don't hang
-    // here forever — that would block GameStore's removal task and leave the finished game
-    // stuck in the store, cluttering the watch page indefinitely.
-    private static readonly TimeSpan _exitTimeout = TimeSpan.FromSeconds(5);
-
     public async ValueTask DisposeAsync()
     {
         Send("quit");
         _stdin.Close();
-
-        try
-        {
-            await _p.WaitForExitAsync().WaitAsync(_exitTimeout);
-        }
-        catch (TimeoutException)
-        {
-            if (!_p.HasExited)
-                _p.Kill(entireProcessTree: true);
-        }
-
+        await _p.WaitForExitAsync();
         _p.Dispose();
     }
 }

JoshHeaps.Net/Services/Interfaces/IEchoRoomStore.cs

@@ -0,0 +1,45 @@
+using JoshHeaps.Net.Models;
+
+namespace JoshHeaps.Net.Services.Interfaces;
+
+/// <summary>
+/// Process-wide registry of ranging rooms. Holds only device identity and the sample indices each
+/// device reported, so the server is a scheduler and a relay — it never sees audio.
+/// </summary>
+public interface IEchoRoomStore
+{
+    /// <summary>Add a device to a room, creating the room if this is the first arrival.</summary>
+    EchoJoinResult Join(string roomCode, string connectionId, string displayName, int sampleRate);
+
+    /// <summary>Remove whichever device owns this connection, returning the room it left.</summary>
+    (string? roomCode, EchoRoomSnapshot? room) Leave(string connectionId);
+
+    /// <summary>Snapshot of a room's roster, or null if the room is gone.</summary>
+    EchoRoomSnapshot? Snapshot(string roomCode);
+
+    /// <summary>Room codes with at least two devices, which is the minimum for a measurement.</summary>
+    IReadOnlyCollection<string> MeasurableRooms { get; }
+
+    /// <summary>
+    /// Open a new round for a room, rotating which device chirps first so no single device is
+    /// permanently the slot-order anchor.
+    /// </summary>
+    EchoRoundSchedule? StartRound(
+        string roomCode,
+        int slotMilliseconds,
+        int tailMilliseconds,
+        TimeSpan lead,
+        TimeSpan grace);
+
+    /// <summary>File a device's peaks against the room's open round.</summary>
+    bool Report(string connectionId, EchoPeakReport report);
+
+    /// <summary>
+    /// Close the open round if every device has reported or its deadline has passed, returning the
+    /// reports to broadcast.
+    /// </summary>
+    EchoRoundResult? TryCloseRound(string roomCode);
+
+    /// <summary>Drop rooms that have had no activity for longer than <paramref name="idleFor"/>.</summary>
+    int PruneIdle(TimeSpan idleFor);
+}

JoshHeaps.Net/wwwroot/css/casino/page.css

@@ -1,126 +0,0 @@
-body {
-    background: #1a1a1a;
-    min-height: 100vh;
-    margin: 0;
-    padding: 0;
-}
-
-.casino-container {
-    max-width: 1000px;
-    margin: 0 auto;
-    padding: 4rem 2rem;
-    text-align: center;
-}
-
-.casino-header {
-    color: #f5f5f5;
-    font-size: 2.5rem;
-    margin-bottom: 0.5rem;
-    font-weight: 300;
-    letter-spacing: 0.1em;
-}
-
-.casino-subtitle {
-    color: #a0a0a0;
-    font-size: 1rem;
-    margin-bottom: 4rem;
-    font-weight: 300;
-}
-
-.games-grid {
-    display: grid;
-    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
-    gap: 1.5rem;
-    margin: 3rem auto;
-    max-width: 900px;
-    padding: 0 1rem;
-}
-
-.game-card {
-    background: #2a2a2a;
-    border: 1px solid #3a3a3a;
-    border-radius: 4px;
-    padding: 2rem 1.5rem;
-    transition: all 0.3s ease;
-    cursor: pointer;
-    text-decoration: none;
-    color: inherit;
-    display: flex;
-    flex-direction: column;
-    align-items: center;
-}
-
-.game-card:hover {
-    background: #2f2f2f;
-    border-color: #4a4a4a;
-    transform: translateY(-2px);
-}
-
-.game-card.disabled {
-    opacity: 0.4;
-    cursor: not-allowed;
-}
-
-.game-card.disabled:hover {
-    background: #2a2a2a;
-    border-color: #3a3a3a;
-    transform: none;
-}
-
-.game-icon {
-    font-size: 2.5rem;
-    margin-bottom: 1rem;
-    opacity: 0.9;
-}
-
-.game-title {
-    font-size: 1.2rem;
-    font-weight: 400;
-    color: #f5f5f5;
-    margin-bottom: 0.75rem;
-    letter-spacing: 0.05em;
-}
-
-.game-description {
-    font-size: 0.9rem;
-    color: #999;
-    line-height: 1.6;
-    font-weight: 300;
-}
-
-.coming-soon {
-    color: #666;
-    font-style: italic;
-    margin-top: 0.5rem;
-    font-size: 0.85rem;
-}
-
-.home-button {
-    margin-top: 4rem;
-    padding: 0.75rem 1.5rem;
-    font-size: 0.9rem;
-    background: transparent;
-    color: #f5f5f5;
-    border: 1px solid #3a3a3a;
-    border-radius: 4px;
-    cursor: pointer;
-    transition: all 0.3s ease;
-    text-decoration: none;
-    display: inline-block;
-    letter-spacing: 0.05em;
-}
-
-.home-button:hover {
-    background: #2a2a2a;
-    border-color: #4a4a4a;
-}
-
-@media (max-width: 768px) {
-    .casino-header {
-        font-size: 2rem;
-    }
-
-    .games-grid {
-        grid-template-columns: 1fr;
-    }
-}

JoshHeaps.Net/wwwroot/css/casino/quicksplit.css

@@ -1,628 +0,0 @@
-/* Quick Split is phone-first: sized for one thumb at the table, then allowed to
-   breathe on a laptop. Palette matches the dealer table so the two read as one tool. */
-
-body {
-    background: radial-gradient(ellipse at 50% -10%, #1c1c1c 0%, #101010 55%, #0a0a0a 100%);
-    min-height: 100vh;
-    margin: 0;
-    color: #e6e6e6;
-    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
-}
-
-/* Same touch handling as the dealer table — see the note there. This page is the one
-   a dealer opens mid-hand to chop a pot, so the ~300ms the browser spends deciding
-   whether a tap was a double-tap-to-zoom is the last thing it needs. */
-button,
-[role="button"],
-input,
-select,
-textarea,
-a {
-    touch-action: manipulation;
-}
-
-button,
-[role="button"],
-input,
-select,
-textarea,
-a {
-    -webkit-tap-highlight-color: transparent;
-}
-
-/* Not on the fields — a dealer typing a pot amount still needs to select it. */
-button,
-[role="button"] {
-    -webkit-user-select: none;
-    user-select: none;
-}
-
-.clearPotBtn:active:not(:disabled),
-.choiceChip:active:not(:disabled),
-.stepBtn:active:not(:disabled),
-.splitBtn:active:not(:disabled),
-.splitBtnGhost:active:not(:disabled),
-.unevenFoldBtn:active:not(:disabled),
-.unevenRemoveBtn:active:not(:disabled) {
-    transform: translateY(1px);
-    filter: brightness(1.25);
-    transition-duration: 0.04s;
-}
-
-@media (prefers-reduced-motion: reduce) {
-    .clearPotBtn:active:not(:disabled),
-    .choiceChip:active:not(:disabled),
-    .stepBtn:active:not(:disabled),
-    .splitBtn:active:not(:disabled),
-    .splitBtnGhost:active:not(:disabled),
-    .unevenFoldBtn:active:not(:disabled),
-    .unevenRemoveBtn:active:not(:disabled) {
-        transform: none;
-    }
-}
-
-#splitApp {
-    max-width: 480px;
-    margin: 0 auto;
-    padding: 1.25rem 1rem 3rem;
-}
-
-/* ---------- Header ---------- */
-
-#splitHeader h1 {
-    margin: 0;
-    font-size: 1.5rem;
-    font-weight: 300;
-    letter-spacing: 0.04em;
-    color: #f5f5f5;
-    position: relative;
-    display: inline-block;
-    padding-bottom: 0.35rem;
-}
-
-#splitHeader h1::after {
-    content: "";
-    position: absolute;
-    left: 0;
-    bottom: 0;
-    width: 36px;
-    height: 3px;
-    border-radius: 2px;
-    background: linear-gradient(90deg, #d8b46a, #a9782f);
-}
-
-.splitSubtitle {
-    margin: 0.35rem 0 1.25rem;
-    color: #8f8f8f;
-    font-size: 0.85rem;
-}
-
-/* ---------- Mode toggle ---------- */
-
-#modeToggle {
-    margin-bottom: 1.1rem;
-}
-
-/* ---------- Uneven amounts ---------- */
-
-#unevenRows {
-    display: flex;
-    flex-direction: column;
-    gap: 0.45rem;
-    margin-bottom: 0.6rem;
-}
-
-.unevenRow {
-    display: flex;
-    align-items: center;
-    gap: 0.45rem;
-}
-
-.unevenRowLabel {
-    flex: none;
-    width: 2rem;
-    color: #8f8f8f;
-    font-size: 0.8rem;
-    font-weight: 600;
-}
-
-.unevenAmountWrap {
-    flex: 1;
-    min-width: 0;
-    display: flex;
-    align-items: center;
-    gap: 0.3rem;
-    background: #141414;
-    border: 1px solid #3a3a3a;
-    border-radius: 10px;
-    padding: 0 0.6rem;
-}
-
-.unevenAmountWrap:focus-within {
-    border-color: #d8b46a;
-}
-
-.unevenCurrency {
-    /* Was #777 — 4.11:1 on this background, under the 4.5:1 small text needs. It sits
-       against every amount a dealer types, so it is read constantly. */
-    color: #8f8f8f;
-}
-
-/* 37px tall, on the field a dealer types every amount into. The touch rule has been
-   44px everywhere else since the round that set it; this page never got measured for
-   it, because the audit only ran the target check when asked and nothing asked. */
-.unevenAmount {
-    flex: 1;
-    min-width: 0;
-    min-height: 46px;
-    background: none;
-    border: none;
-    outline: none;
-    color: #f2f2f2;
-    font-family: inherit;
-    font-size: 16px;
-    font-variant-numeric: tabular-nums;
-    padding: 0.6rem 0;
-}
-
-.unevenFoldBtn {
-    flex: none;
-    min-height: 44px;
-    padding: 0 0.6rem;
-    border-radius: 9px;
-    border: 1px solid #3a3a3a;
-    background: #232323;
-    color: #8f8f8f;
-    font-family: inherit;
-    font-size: 0.72rem;
-    cursor: pointer;
-}
-
-.unevenFoldBtn.selected {
-    background: linear-gradient(180deg, #3d1f1f, #2c1515);
-    border-color: #5b2626;
-    color: #ffd6d6;
-}
-
-/* 30px across, and it deletes a player's entry — the one control on the row where a
-   near miss costs something. The amount field beside it gives up the 16px. */
-.unevenRemoveBtn {
-    flex: none;
-    width: 46px;
-    height: 46px;
-    border: none;
-    background: none;
-    /* Was #6a6a6a — 3.66:1, the worst on the page, on a control that deletes a
-       player's entry. A destructive action should not be the faintest thing in view. */
-    color: #9a9a9a;
-    font-size: 0.85rem;
-    cursor: pointer;
-}
-
-.unevenRemoveBtn:disabled {
-    opacity: 0.3;
-    cursor: not-allowed;
-}
-
-#unevenResult {
-    background: linear-gradient(160deg, #1f2a21, #161c17);
-    border: 1px solid #2c3a2f;
-    border-radius: 14px;
-    padding: 0.9rem 1rem;
-    margin-bottom: 1.5rem;
-}
-
-#unevenResult[hidden] {
-    display: none;
-}
-
-.unevenPot {
-    display: flex;
-    align-items: baseline;
-    /* Wraps so a chop opens underneath its own pot rather than squeezing in beside the
-       eligible-players list and pushing it off the row. */
-    flex-wrap: wrap;
-    gap: 0.6rem;
-    padding: 0.3rem 0;
-    font-size: 0.85rem;
-}
-
-.unevenChopToggle {
-    flex: none;
-    order: 3;
-    /* 44px on touch: it moves money, like everything else that does. */
-    min-height: 32px;
-    padding: 0.2rem 0.6rem;
-    border: 1px solid rgba(216, 180, 106, 0.45);
-    border-radius: 999px;
-    background: rgba(216, 180, 106, 0.1);
-    color: #e3c887;
-    font: inherit;
-    font-size: 0.74rem;
-    cursor: pointer;
-}
-
-.unevenChopToggle:hover {
-    background: rgba(216, 180, 106, 0.18);
-}
-
-.unevenChopToggle:focus-visible {
-    outline: 2px solid #d8b46a;
-    outline-offset: 2px;
-}
-
-.unevenChopDetail {
-    order: 4;
-    flex: 0 0 100%;
-    /* Or the padding is added on top of the 100% basis and the panel sits wider than
-       the row it belongs to — measured 328px inside a 309px row on a phone. */
-    box-sizing: border-box;
-    margin: 0.15rem 0 0.2rem;
-    padding: 0.45rem 0.6rem;
-    border-radius: 8px;
-    background: rgba(255, 255, 255, 0.04);
-}
-
-.unevenChopWays {
-    display: flex;
-    align-items: center;
-    gap: 0.45rem;
-    margin-bottom: 0.3rem;
-}
-
-.unevenChopWaysLabel {
-    color: #cfcfcf;
-    font-size: 0.78rem;
-    font-variant-numeric: tabular-nums;
-}
-
-.unevenChopEach {
-    margin: 0;
-    color: #f2f2f2;
-    font-weight: 600;
-}
-
-.unevenChopNote {
-    margin: 0.2rem 0 0;
-    color: #9a9a9a;
-    font-size: 0.76rem;
-}
-
-.unevenChopDust {
-    color: #e0b169;
-}
-
-@media (max-width: 700px), (pointer: coarse) {
-    .unevenChopToggle {
-        min-height: 44px;
-        padding: 0.4rem 0.9rem;
-    }
-}
-
-.unevenPot + .unevenPot {
-    border-top: 1px solid rgba(255, 255, 255, 0.06);
-}
-
-.unevenPotLabel {
-    flex: none;
-    color: #d8b46a;
-    font-weight: 600;
-}
-
-.unevenPotAmount {
-    flex: none;
-    color: #f2f2f2;
-    font-weight: 600;
-    font-variant-numeric: tabular-nums;
-}
-
-.unevenPotWho {
-    flex: 1;
-    min-width: 0;
-    text-align: right;
-    color: #9a9a9a;
-    font-size: 0.78rem;
-}
-
-.unevenPotReturn .unevenPotLabel,
-.unevenPotReturn .unevenPotAmount {
-    color: #9a9a9a;
-    font-weight: 500;
-}
-
-.unevenPotTotal {
-    margin-top: 0.15rem;
-    border-top: 1px solid rgba(255, 255, 255, 0.14) !important;
-}
-
-.unevenPotTotal .unevenPotLabel {
-    color: #8f9d92;
-    font-weight: 500;
-}
-
-.unevenEmpty {
-    margin: 0;
-    color: #8f9d92;
-    font-size: 0.82rem;
-    line-height: 1.45;
-}
-
-/* ---------- The answer ---------- */
-
-#splitResult {
-    background: linear-gradient(160deg, #1f2a21, #161c17);
-    border: 1px solid #2c3a2f;
-    border-radius: 14px;
-    padding: 1.4rem 1.1rem;
-    text-align: center;
-    margin-bottom: 1.5rem;
-    transition: border-color 0.2s ease, box-shadow 0.2s ease;
-}
-
-#splitResult.hasAmount {
-    border-color: #3c6b46;
-    box-shadow: 0 0 0 1px rgba(78, 201, 122, 0.08), 0 6px 20px rgba(0, 0, 0, 0.35);
-}
-
-#splitResultLabel {
-    color: #8f9d92;
-    font-size: 0.78rem;
-    letter-spacing: 0.06em;
-    text-transform: uppercase;
-}
-
-#splitResultAmount {
-    margin-top: 0.35rem;
-    font-size: clamp(2.6rem, 14vw, 3.4rem);
-    font-weight: 600;
-    line-height: 1.05;
-    color: #f2f2f2;
-    font-variant-numeric: tabular-nums;
-    letter-spacing: -0.01em;
-}
-
-#splitResult.hasAmount #splitResultAmount {
-    color: #7ee2a0;
-}
-
-#splitOddNote {
-    margin-top: 0.7rem;
-    color: #d8b46a;
-    font-size: 0.85rem;
-    line-height: 1.45;
-}
-
-#splitDustNote {
-    margin-top: 0.5rem;
-    color: #e0a1a1;
-    font-size: 0.8rem;
-    line-height: 1.4;
-}
-
-/* ---------- Inputs ---------- */
-
-.splitField {
-    display: block;
-    margin-bottom: 1.35rem;
-}
-
-/* A `display` declaration outranks the browser's own [hidden] rule, so anything
-   given one has to opt back out explicitly or toggling `hidden` does nothing. */
-[hidden] {
-    display: none !important;
-}
-
-.splitLabel {
-    display: block;
-    margin-bottom: 0.5rem;
-    color: #9a9a9a;
-    font-size: 0.75rem;
-    letter-spacing: 0.06em;
-    text-transform: uppercase;
-}
-
-.potInputWrap {
-    display: flex;
-    align-items: center;
-    gap: 0.4rem;
-    background: #141414;
-    border: 1px solid #3a3a3a;
-    border-radius: 12px;
-    padding: 0.2rem 0.75rem;
-    transition: border-color 0.15s ease, box-shadow 0.15s ease;
-}
-
-.potInputWrap:focus-within {
-    border-color: #d8b46a;
-    box-shadow: 0 0 0 3px rgba(216, 180, 106, 0.12);
-}
-
-.potCurrency {
-    color: #777;
-    font-size: 1.6rem;
-    font-weight: 300;
-}
-
-#potInput {
-    flex: 1;
-    min-width: 0;
-    background: none;
-    border: none;
-    outline: none;
-    color: #f2f2f2;
-    font-size: 2rem;
-    font-weight: 500;
-    font-variant-numeric: tabular-nums;
-    padding: 0.55rem 0;
-    font-family: inherit;
-}
-
-#potInput::placeholder {
-    color: #4a4a4a;
-}
-
-.clearPotBtn {
-    flex: none;
-    width: 34px;
-    height: 34px;
-    border-radius: 50%;
-    border: none;
-    background: #262626;
-    color: #999;
-    font-size: 0.85rem;
-    cursor: pointer;
-}
-
-@media (hover: hover) {
-    .clearPotBtn:hover {
-        background: #333;
-        color: #ddd;
-    }
-}
-
-/* ---------- Tap targets ---------- */
-
-.chipRow {
-    display: flex;
-    flex-wrap: wrap;
-    gap: 0.5rem;
-}
-
-.choiceChip {
-    flex: 1 1 auto;
-    min-width: 58px;
-    min-height: 52px;
-    padding: 0.5rem 0.7rem;
-    background: linear-gradient(180deg, #2e2e2e, #232323);
-    border: 1px solid #3a3a3a;
-    border-radius: 11px;
-    color: #ddd;
-    font-size: 1rem;
-    font-family: inherit;
-    cursor: pointer;
-    transition: all 0.15s ease;
-}
-
-@media (hover: hover) {
-    .choiceChip:hover {
-        border-color: #4a4a4a;
-        background: linear-gradient(180deg, #383838, #2a2a2a);
-    }
-}
-
-.choiceChip.selected {
-    background: linear-gradient(180deg, #3a2f18, #241d0f);
-    border-color: #d8b46a;
-    color: #f0d9a8;
-    font-weight: 600;
-}
-
-.waysStepper {
-    display: flex;
-    align-items: center;
-    gap: 0.35rem;
-    flex: 1 1 auto;
-    min-width: 150px;
-    background: #191919;
-    border: 1px solid #333;
-    border-radius: 11px;
-    padding: 0.2rem 0.4rem;
-}
-
-.stepBtn {
-    width: 40px;
-    height: 44px;
-    border: none;
-    border-radius: 8px;
-    background: #262626;
-    color: #ddd;
-    font-size: 1.25rem;
-    line-height: 1;
-    font-family: inherit;
-    cursor: pointer;
-}
-
-@media (hover: hover) {
-    .stepBtn:hover {
-        background: #333;
-    }
-}
-
-.waysReadout {
-    flex: 1;
-    text-align: center;
-    color: #999;
-    font-size: 0.8rem;
-    font-variant-numeric: tabular-nums;
-}
-
-/* ---------- Footer actions ---------- */
-
-#splitActions {
-    display: flex;
-    gap: 0.6rem;
-    margin-top: 1.75rem;
-}
-
-.splitBtn {
-    flex: 1;
-    display: inline-flex;
-    align-items: center;
-    justify-content: center;
-    min-height: 48px;
-    padding: 0.6rem 0.9rem;
-    border-radius: 10px;
-    border: 1px solid #3a3a3a;
-    background: linear-gradient(180deg, #2e2e2e, #232323);
-    color: #ddd;
-    font-size: 0.9rem;
-    font-family: inherit;
-    text-decoration: none;
-    cursor: pointer;
-    transition: all 0.15s ease;
-}
-
-@media (hover: hover) {
-    .splitBtn:hover {
-        border-color: #4a4a4a;
-        background: linear-gradient(180deg, #383838, #2a2a2a);
-    }
-}
-
-.splitBtnGhost {
-    background: transparent;
-}
-
-.splitFootnote {
-    margin-top: 1.5rem;
-    /* Was #6f6f6f — 3.94:1. It carries the instruction for what to do with the pot
-       list, which is not a decorative line. */
-    color: #8d8d8d;
-    font-size: 0.78rem;
-    line-height: 1.5;
-    text-align: center;
-}
-
-/* This footnote names a control the dealer is being told to reach for, so the name
-   itself has to be readable — it was 3.39:1 at its worst, inheriting the muted grey
-   the surrounding sentence is deliberately set in. Emphasised text carrying the
-   instruction gets its own colour rather than the aside's. */
-.splitFootnote strong {
-    color: #a8a8a8;
-    font-weight: 600;
-}
-
-.splitFootnote a {
-    color: #a9782f;
-}
-
-/* Roomier once there's a real screen to work with. */
-@media (min-width: 700px) {
-    #splitApp {
-        padding-top: 2.5rem;
-    }
-
-    #splitHeader h1 {
-        font-size: 1.8rem;
-    }
-}

JoshHeaps.Net/wwwroot/css/echo/echo.css

@@ -0,0 +1,287 @@
+body {
+    background: var(--color-bg);
+    color: var(--color-text);
+    font-family: var(--font-body);
+    margin: 0;
+    padding: 2rem 1.25rem 4rem;
+}
+
+#echoHeader {
+    max-width: 46rem;
+    margin: 0 auto 1.5rem;
+}
+
+#echoHeader h1 {
+    color: var(--color-heading);
+    font-size: 2.4rem;
+    letter-spacing: -0.02em;
+    margin: 0 0 0.6rem;
+}
+
+.echo-blurb {
+    line-height: 1.6;
+    margin: 0 0 0.5rem;
+}
+
+.echo-privacy {
+    color: var(--color-text-subtle);
+    font-family: var(--font-mono);
+    font-size: 0.8rem;
+    margin: 0;
+}
+
+#echoControls {
+    align-items: flex-end;
+    display: flex;
+    flex-wrap: wrap;
+    gap: 0.75rem;
+    margin: 0 auto 1rem;
+    max-width: 46rem;
+}
+
+#echoControls label {
+    color: var(--color-text-muted);
+    display: flex;
+    flex-direction: column;
+    font-family: var(--font-mono);
+    font-size: 0.75rem;
+    gap: 0.3rem;
+    text-transform: lowercase;
+}
+
+#echoControls input {
+    background: var(--color-surface-raised);
+    border: 1px solid var(--color-border);
+    border-radius: 6px;
+    color: var(--color-heading);
+    font-family: var(--font-mono);
+    font-size: 1rem;
+    padding: 0.5rem 0.6rem;
+    width: 7rem;
+}
+
+#echoControls input:focus {
+    border-color: var(--color-accent-border);
+    outline: none;
+}
+
+#echoControls button {
+    background: transparent;
+    border: 1px solid var(--color-accent-border);
+    border-radius: 6px;
+    color: var(--color-accent);
+    cursor: pointer;
+    font-family: var(--font-mono);
+    font-size: 0.9rem;
+    padding: 0.6rem 1.1rem;
+    transition: background 0.15s ease, color 0.15s ease;
+}
+
+#echoControls button:hover:not(:disabled) {
+    background: var(--color-accent);
+    color: var(--color-bg);
+}
+
+#echoControls button:disabled {
+    border-color: var(--color-border);
+    color: var(--color-text-subtle);
+    cursor: default;
+}
+
+.echo-status,
+.echo-share {
+    font-family: var(--font-mono);
+    font-size: 0.8rem;
+    margin: 0 auto 0.4rem;
+    max-width: 46rem;
+}
+
+.echo-share a {
+    color: var(--color-accent);
+    text-decoration: none;
+    word-break: break-all;
+}
+
+#echoWarnings {
+    margin: 0 auto;
+    max-width: 46rem;
+}
+
+.echo-warning {
+    background: rgba(255, 170, 0, 0.08);
+    border: 1px solid rgba(255, 170, 0, 0.35);
+    border-radius: 6px;
+    color: #ffcc66;
+    font-size: 0.85rem;
+    line-height: 1.5;
+    margin: 0.5rem 0;
+    padding: 0.7rem 0.9rem;
+}
+
+.echo-readout {
+    align-items: baseline;
+    display: flex;
+    flex-direction: column;
+    gap: 0.4rem;
+    margin: 2rem auto;
+    max-width: 46rem;
+    min-height: 6rem;
+}
+
+.echo-metres {
+    color: var(--color-accent);
+    font-family: var(--font-mono);
+    font-size: clamp(3.5rem, 14vw, 7rem);
+    font-variant-numeric: tabular-nums;
+    line-height: 1;
+}
+
+.echo-metres small {
+    color: var(--color-text-subtle);
+    font-size: 0.28em;
+    margin-left: 0.2em;
+}
+
+.echo-readout-detail,
+.echo-readout-idle {
+    color: var(--color-text-subtle);
+    font-family: var(--font-mono);
+    font-size: 0.8rem;
+}
+
+#echoPanels {
+    display: grid;
+    gap: 1rem;
+    grid-template-columns: repeat(auto-fit, minmax(min(100%, 18rem), 1fr));
+    margin: 0 auto;
+    max-width: 46rem;
+}
+
+.echo-panel {
+    background: var(--color-surface);
+    border: 1px solid var(--color-border);
+    border-radius: 8px;
+    padding: 1rem 1.1rem;
+}
+
+.echo-panel-wide {
+    margin: 1rem auto 0;
+    max-width: 46rem;
+}
+
+.echo-panel h2 {
+    color: var(--color-heading-secondary);
+    font-family: var(--font-mono);
+    font-size: 0.8rem;
+    font-weight: 500;
+    letter-spacing: 0.08em;
+    margin: 0 0 0.75rem;
+    text-transform: uppercase;
+}
+
+.echo-hint {
+    color: var(--color-text-subtle);
+    font-size: 0.8rem;
+    margin: -0.4rem 0 0.75rem;
+}
+
+#echoRoster {
+    list-style: none;
+    margin: 0;
+    padding: 0;
+}
+
+.echo-device {
+    border-bottom: 1px solid var(--color-border);
+    font-family: var(--font-mono);
+    font-size: 0.85rem;
+    padding: 0.45rem 0;
+}
+
+.echo-device:last-child {
+    border-bottom: none;
+}
+
+.echo-device-self {
+    color: var(--color-accent);
+}
+
+#echoPairs {
+    overflow-x: auto;
+}
+
+#echoPairs table {
+    border-collapse: collapse;
+    font-family: var(--font-mono);
+    font-size: 0.85rem;
+    width: 100%;
+}
+
+#echoPairs th {
+    color: var(--color-text-subtle);
+    font-weight: 500;
+    padding: 0 0.6rem 0.4rem 0;
+    text-align: left;
+}
+
+#echoPairs td {
+    border-top: 1px solid var(--color-border);
+    color: var(--color-heading-secondary);
+    font-variant-numeric: tabular-nums;
+    padding: 0.4rem 0.6rem 0.4rem 0;
+}
+
+.echo-dropped td {
+    color: var(--color-text-subtle);
+    text-decoration: line-through;
+}
+
+.echo-slots {
+    list-style: none;
+    margin: 0 0 0.6rem;
+    padding: 0;
+}
+
+.echo-slots li {
+    color: var(--color-heading-secondary);
+    font-family: var(--font-mono);
+    font-size: 0.85rem;
+    font-variant-numeric: tabular-nums;
+    padding: 0.2rem 0;
+}
+
+.echo-slots .echo-missed {
+    color: #ff7676;
+}
+
+.echo-diag-line {
+    color: var(--color-text-subtle);
+    font-family: var(--font-mono);
+    font-size: 0.75rem;
+    line-height: 1.5;
+    margin: 0;
+}
+
+.echo-diag-line strong {
+    color: #ff7676;
+}
+
+#echoTrace {
+    display: block;
+    height: 160px;
+    width: 100%;
+}
+
+.echo-back {
+    color: var(--color-text-subtle);
+    display: block;
+    font-family: var(--font-mono);
+    font-size: 0.8rem;
+    margin: 2rem auto 0;
+    max-width: 46rem;
+    text-decoration: none;
+}
+
+.echo-back:hover {
+    color: var(--color-accent);
+}

JoshHeaps.Net/wwwroot/js/EchoScripts/EchoAudio.js

@@ -0,0 +1,160 @@
+/*
+ * Microphone capture and chirp playback, both indexed by AudioContext frame.
+ *
+ * Frames, not wall-clock: currentTime * sampleRate is exactly the frame number, so a playback
+ * scheduled at an audio-clock time converts directly into a position in the recording. Nothing here
+ * depends on a timer firing on schedule, which matters because a hidden tab's timers are throttled
+ * to about once a second and its chirp would land in another device's slot.
+ */
+const EchoAudio = {
+    TARGET_SAMPLE_RATE: 48000,
+    RING_SECONDS: 20,
+    BLUETOOTH_HINTS: /bluetooth|airpod|hands-?free|headset|\bbt\b|wireless/i,
+
+    context: null,
+    stream: null,
+    capture: null,
+    ring: null,
+    highestFrame: 0,
+    peakAmplitude: 0,
+    warnings: [],
+    onSamples: null,
+
+    async start() {
+        if (this.context) return this.describe();
+
+        this.stream = await navigator.mediaDevices.getUserMedia({
+            // Echo cancellation exists to delete sounds this device just played, which is exactly
+            // the measurement. Gain control and noise suppression distort the chirp's envelope.
+            audio: {
+                echoCancellation: false,
+                noiseSuppression: false,
+                autoGainControl: false,
+                channelCount: 1
+            }
+        });
+
+        this.context = new AudioContext({ sampleRate: this.TARGET_SAMPLE_RATE, latencyHint: "interactive" });
+        await this.context.audioWorklet.addModule("/js/EchoScripts/EchoCaptureProcessor.js");
+        await this.context.resume();
+
+        this.ring = new Float32Array(Math.ceil(this.context.sampleRate * this.RING_SECONDS));
+        this.attachCapture();
+        this.warnings = this.inspectDevice();
+
+        return this.describe();
+    },
+
+    attachCapture() {
+        const source = this.context.createMediaStreamSource(this.stream);
+        this.capture = new AudioWorkletNode(this.context, "echo-capture", { numberOfOutputs: 0 });
+        this.capture.port.onmessage = ({ data }) => this.write(data.frame, data.samples);
+        source.connect(this.capture);
+        return this.capture;
+    },
+
+    write(frame, samples) {
+        const capacity = this.ring.length;
+        let loudest = 0;
+
+        for (let i = 0; i < samples.length; i++) {
+            this.ring[(frame + i) % capacity] = samples[i];
+            loudest = Math.max(loudest, Math.abs(samples[i]));
+        }
+
+        this.peakAmplitude = Math.max(this.peakAmplitude * 0.95, loudest);
+        this.highestFrame = Math.max(this.highestFrame, frame + samples.length);
+        this.onSamples?.(this.highestFrame);
+        return this.highestFrame;
+    },
+
+    /** The recording position for an AudioContext time. Exact: currentTime * sampleRate is a frame. */
+    frameAt(contextTime) {
+        return Math.round(contextTime * this.context.sampleRate);
+    },
+
+    /** Copy an absolute frame range out of the ring, or null if it is not (or no longer) held. */
+    read(startFrame, length) {
+        if (length <= 0) return null;
+        if (startFrame + length > this.highestFrame) return null;
+        if (startFrame < this.highestFrame - this.ring.length) return null;
+
+        const capacity = this.ring.length;
+        const window = new Float32Array(length);
+        for (let i = 0; i < length; i++) window[i] = this.ring[((startFrame + i) % capacity + capacity) % capacity];
+
+        return window;
+    },
+
+    /**
+     * Schedule a chirp on the audio clock and return the frame it was scheduled for. When it
+     * actually leaves the speaker is later by an unknown output latency and does not need to be
+     * known — it is recovered from the recording of it.
+     */
+    play(chirp, atContextTime, gain = 0.5) {
+        const when = Math.max(atContextTime, this.context.currentTime);
+        const buffer = this.context.createBuffer(1, chirp.length, this.context.sampleRate);
+        buffer.copyToChannel(chirp, 0);
+
+        const source = this.context.createBufferSource();
+        const volume = this.context.createGain();
+        volume.gain.value = gain;
+        source.buffer = buffer;
+        source.connect(volume).connect(this.context.destination);
+        source.start(when);
+
+        return this.frameAt(when);
+    },
+
+    /** How far behind the audio clock the main thread's view of the recording is running. */
+    captureLagSeconds() {
+        return this.context.currentTime - this.highestFrame / this.context.sampleRate;
+    },
+
+    /** Reported output latency, which bounds how late a scheduled chirp can reach the microphone. */
+    outputLatencySeconds() {
+        return (this.context.outputLatency || 0) + (this.context.baseLatency || 0);
+    },
+
+    inspectDevice() {
+        const warnings = [];
+        const track = this.stream.getAudioTracks()[0];
+        const settings = track?.getSettings() ?? {};
+
+        if (this.context.sampleRate !== this.TARGET_SAMPLE_RATE)
+            warnings.push(`Running at ${this.context.sampleRate}Hz instead of 48000Hz — ranges stay correct but resolution drops.`);
+
+        if (this.BLUETOOTH_HINTS.test(track?.label ?? ""))
+            warnings.push("This looks like a Bluetooth microphone. Bluetooth resamples and re-times the stream, which breaks the measurement — switch to the built-in speaker and microphone.");
+
+        for (const [name, label] of [["echoCancellation", "Echo cancellation"], ["autoGainControl", "Auto gain"], ["noiseSuppression", "Noise suppression"]])
+            if (settings[name] === true) warnings.push(`${label} could not be turned off on this device — the measurement will be unreliable.`);
+
+        return warnings;
+    },
+
+    describe() {
+        const track = this.stream.getAudioTracks()[0];
+
+        return {
+            sampleRate: this.context.sampleRate,
+            label: track?.label ?? "microphone",
+            outputLatencyMs: Math.round(this.outputLatencySeconds() * 1000),
+            warnings: this.warnings
+        };
+    },
+
+    async stop() {
+        this.stream?.getTracks().forEach(track => track.stop());
+        await this.context?.close();
+        this.context = null;
+        this.stream = null;
+        this.capture = null;
+        this.ring = null;
+        this.highestFrame = 0;
+        this.onSamples = null;
+        return true;
+    }
+};
+
+if (typeof window !== "undefined") window.EchoAudio = EchoAudio;

JoshHeaps.Net/wwwroot/js/EchoScripts/EchoCaptureProcessor.js

@@ -0,0 +1,39 @@
+/*
+ * Capture worklet. Every block is tagged with the AudioContext frame it started at, which makes the
+ * context's own clock the index for all captured audio: a scheduled playback time converts to a
+ * recording position exactly, with no dependence on when the main thread got round to noticing.
+ *
+ * A worklet rather than ScriptProcessorNode because a dropped buffer would break the continuity
+ * that the sample count depends on.
+ */
+const BLOCK_SAMPLES = 2048;
+
+class EchoCaptureProcessor extends AudioWorkletProcessor {
+    constructor() {
+        super();
+        this.block = new Float32Array(BLOCK_SAMPLES);
+        this.filled = 0;
+        this.blockStartFrame = 0;
+    }
+
+    process(inputs) {
+        const channel = inputs[0]?.[0];
+        if (!channel) return true;
+
+        for (let i = 0; i < channel.length; i++) {
+            if (this.filled === 0) this.blockStartFrame = currentFrame + i;
+            this.block[this.filled++] = channel[i];
+            if (this.filled === BLOCK_SAMPLES) this.flush();
+        }
+
+        return true;
+    }
+
+    flush() {
+        const samples = this.block.slice(0, this.filled);
+        this.port.postMessage({ frame: this.blockStartFrame, samples }, [samples.buffer]);
+        this.filled = 0;
+    }
+}
+
+registerProcessor("echo-capture", EchoCaptureProcessor);

JoshHeaps.Net/wwwroot/js/EchoScripts/EchoDsp.js

@@ -0,0 +1,585 @@
+/*
+ * Pure signal-processing and geometry for acoustic ranging. No DOM, no Web Audio, no network:
+ * everything here is a function of its arguments so the simulator and the tests can drive the
+ * exact code the page runs.
+ */
+const EchoDsp = {
+    speedOfSound(temperatureCelsius = 20) {
+        return 331.3 + 0.606 * temperatureCelsius;
+    },
+
+    nextPowerOfTwo(value) {
+        let size = 1;
+        while (size < value) size <<= 1;
+        return size;
+    },
+
+    /**
+     * Linear frequency sweep, tapered at both ends. A sweep is used rather than a tone because a
+     * tone's autocorrelation peaks once per period, leaving no unambiguous arrival to measure.
+     */
+    makeChirp({ sampleRate, durationSeconds, startHz, endHz, taperFraction = 0.15 }) {
+        const length = Math.round(sampleRate * durationSeconds);
+        const sweepRate = (endHz - startHz) / durationSeconds;
+        const chirp = new Float32Array(length);
+
+        for (let i = 0; i < length; i++) {
+            const t = i / sampleRate;
+            chirp[i] = Math.sin(2 * Math.PI * (startHz * t + 0.5 * sweepRate * t * t));
+        }
+
+        return this.applyTaper(chirp, taperFraction);
+    },
+
+    applyTaper(signal, fraction) {
+        const edge = Math.max(1, Math.floor(signal.length * fraction));
+
+        for (let i = 0; i < edge; i++) {
+            const window = 0.5 - 0.5 * Math.cos((Math.PI * i) / edge);
+            signal[i] *= window;
+            signal[signal.length - 1 - i] *= window;
+        }
+
+        return signal;
+    },
+
+    twiddles(size) {
+        this._twiddleCache ??= new Map();
+        const cached = this._twiddleCache.get(size);
+        if (cached) return cached;
+
+        const half = size >> 1;
+        const table = { cos: new Float64Array(half), sin: new Float64Array(half) };
+
+        for (let i = 0; i < half; i++) {
+            const angle = (-2 * Math.PI * i) / size;
+            table.cos[i] = Math.cos(angle);
+            table.sin[i] = Math.sin(angle);
+        }
+
+        this._twiddleCache.set(size, table);
+        return table;
+    },
+
+    fft(real, imaginary, inverse = false) {
+        const size = real.length;
+        this.reverseBits(real, imaginary);
+        const { cos, sin } = this.twiddles(size);
+
+        for (let span = 2; span <= size; span <<= 1) {
+            const half = span >> 1;
+            const stride = size / span;
+
+            for (let base = 0; base < size; base += span) {
+                for (let k = 0; k < half; k++) {
+                    const twiddle = k * stride;
+                    const wReal = cos[twiddle];
+                    const wImaginary = inverse ? -sin[twiddle] : sin[twiddle];
+
+                    const lower = base + k;
+                    const upper = lower + half;
+                    const productReal = real[upper] * wReal - imaginary[upper] * wImaginary;
+                    const productImaginary = real[upper] * wImaginary + imaginary[upper] * wReal;
+
+                    real[upper] = real[lower] - productReal;
+                    imaginary[upper] = imaginary[lower] - productImaginary;
+                    real[lower] += productReal;
+                    imaginary[lower] += productImaginary;
+                }
+            }
+        }
+
+        if (!inverse) return { real, imaginary };
+
+        for (let i = 0; i < size; i++) {
+            real[i] /= size;
+            imaginary[i] /= size;
+        }
+
+        return { real, imaginary };
+    },
+
+    reverseBits(real, imaginary) {
+        const size = real.length;
+
+        for (let i = 1, j = 0; i < size; i++) {
+            let bit = size >> 1;
+            for (; j & bit; bit >>= 1) j ^= bit;
+            j ^= bit;
+            if (i >= j) continue;
+
+            [real[i], real[j]] = [real[j], real[i]];
+            [imaginary[i], imaginary[j]] = [imaginary[j], imaginary[i]];
+        }
+
+        return { real, imaginary };
+    },
+
+    /**
+     * Matched-filter envelope of a recording against a template, via FFT cross-correlation.
+     * Negative frequencies are dropped so the result is the analytic envelope rather than a burst
+     * oscillating at the sweep frequency — an oscillating peak defeats sub-sample interpolation
+     * and makes first-arrival detection jitter by half a carrier period.
+     */
+    matchedFilterEnvelope(recording, template) {
+        const size = this.nextPowerOfTwo(recording.length + template.length);
+        const recordingReal = new Float64Array(size);
+        const recordingImaginary = new Float64Array(size);
+        const templateReal = new Float64Array(size);
+        const templateImaginary = new Float64Array(size);
+
+        recordingReal.set(recording);
+        templateReal.set(template);
+        this.fft(recordingReal, recordingImaginary);
+        this.fft(templateReal, templateImaginary);
+
+        const analyticReal = new Float64Array(size);
+        const analyticImaginary = new Float64Array(size);
+        const half = size >> 1;
+
+        for (let i = 0; i <= half; i++) {
+            const gain = i === 0 || i === half ? 1 : 2;
+            analyticReal[i] = gain * (recordingReal[i] * templateReal[i] + recordingImaginary[i] * templateImaginary[i]);
+            analyticImaginary[i] = gain * (recordingImaginary[i] * templateReal[i] - recordingReal[i] * templateImaginary[i]);
+        }
+
+        this.fft(analyticReal, analyticImaginary, true);
+
+        const envelope = new Float32Array(recording.length);
+        for (let i = 0; i < envelope.length; i++)
+            envelope[i] = Math.sqrt(analyticReal[i] * analyticReal[i] + analyticImaginary[i] * analyticImaginary[i]);
+
+        return envelope;
+    },
+
+    maxInRange(values, start, end) {
+        let index = start;
+        let value = -Infinity;
+
+        for (let i = start; i < end; i++) {
+            if (values[i] <= value) continue;
+            value = values[i];
+            index = i;
+        }
+
+        return { index, value };
+    },
+
+    medianInRange(values, start, end, sampleLimit = 2048) {
+        const span = end - start;
+        if (span <= 0) return 0;
+
+        const stride = Math.max(1, Math.floor(span / sampleLimit));
+        const sampled = [];
+        for (let i = start; i < end; i += stride) sampled.push(values[i]);
+
+        sampled.sort((left, right) => left - right);
+        return sampled[sampled.length >> 1];
+    },
+
+    /**
+     * Sub-sample peak position by fitting a parabola through the peak and its neighbours. One
+     * tenth of a sample is 0.7mm of range at 48kHz, so this is most of the accuracy for free.
+     */
+    refinePeakIndex(envelope, index) {
+        if (index <= 0 || index >= envelope.length - 1) return index;
+
+        const before = envelope[index - 1];
+        const peak = envelope[index];
+        const after = envelope[index + 1];
+        const curvature = before - 2 * peak + after;
+        if (curvature === 0) return index;
+
+        const offset = (0.5 * (before - after)) / curvature;
+        return index + Math.max(-1, Math.min(1, offset));
+    },
+
+    /**
+     * First arrival in a window, not the loudest one. A reflection off a wall or table often
+     * comes back louder than the direct path, and only the direct path is the distance.
+     */
+    findFirstPeak(envelope, options = {}) {
+        const start = Math.max(0, Math.floor(options.start ?? 0));
+        const end = Math.min(envelope.length, Math.ceil(options.end ?? envelope.length));
+        if (end - start < 8) return null;
+
+        const loudest = this.maxInRange(envelope, start, end);
+        const noiseFloor = this.medianInRange(envelope, start, end);
+        const snr = noiseFloor > 0 ? loudest.value / noiseFloor : Infinity;
+        if (snr < (options.minSnr ?? 4)) return null;
+
+        // Held above the noise floor so sidelobes cannot trigger it, but well below the loudest
+        // arrival so that a reflection several times louder than the direct path cannot mask it.
+        const threshold = Math.max(
+            noiseFloor * (options.noiseMultiple ?? 6),
+            loudest.value * (options.relativeThreshold ?? 0.15)
+        );
+
+        let crossing = start;
+        while (crossing < end && envelope[crossing] < threshold) crossing++;
+        if (crossing >= end) return null;
+
+        const lobeEnd = Math.min(end, crossing + (options.lobeSamples ?? 64));
+        const arrival = this.maxInRange(envelope, crossing, lobeEnd);
+
+        return { index: this.refinePeakIndex(envelope, arrival.index), amplitude: arrival.value, snr };
+    },
+
+    /**
+     * Locate every chirp of one round in a single device's recording.
+     *
+     * The device's own chirp is the anchor: it is always present and always the loudest thing in
+     * the recording, and its position absorbs this device's own output and input latency. Every
+     * other slot is then searched relative to that anchor, so no clock agreement between devices
+     * is required — only that the chirps stay in their slots.
+     */
+    detectSlotPeaks({
+        envelope,
+        slotCount,
+        slotSamples,
+        ownSlot,
+        ownSearchStart,
+        ownSearchSamples,
+        slotHints = null,
+        peakOptions = {}
+    }) {
+        const own = this.findFirstPeak(envelope, {
+            ...peakOptions,
+            start: ownSearchStart,
+            end: ownSearchStart + ownSearchSamples
+        });
+
+        if (!own) return null;
+
+        const anchor = own.index - ownSlot * slotSamples;
+        const pad = Math.floor(slotSamples * 0.45);
+        const peaks = new Array(slotCount).fill(null);
+        peaks[ownSlot] = own;
+
+        for (let slot = 0; slot < slotCount; slot++) {
+            if (slot === ownSlot) continue;
+
+            const centre = anchor + slot * slotSamples + (slotHints?.[slot] ?? 0);
+            peaks[slot] = this.findFirstPeak(envelope, {
+                ...peakOptions,
+                start: centre - pad,
+                end: centre + pad
+            });
+        }
+
+        return { anchor, peaks };
+    },
+
+    /**
+     * Distance between two devices from four arrival indices, each measured inside the recording
+     * of the device that made it. Clock offset and audio-pipeline latency appear once with each
+     * sign and cancel; the devices' own speaker-to-microphone spacing does not, and is added back.
+     */
+    pairDistance({ a1, a2, b1, b2, sampleRate, sampleRateA, sampleRateB, speedOfSound, epsilonA = 0, epsilonB = 0 }) {
+        // Each interval is converted to seconds in its own device's sample rate before the two are
+        // subtracted: a device that hands back 44100 instead of 48000 would otherwise contribute
+        // its interval in the wrong unit.
+        const intervalA = (a2 - a1) / (sampleRateA ?? sampleRate);
+        const intervalB = (b2 - b1) / (sampleRateB ?? sampleRate);
+        return ((intervalA - intervalB) / 2) * speedOfSound + (epsilonA + epsilonB) / 2;
+    },
+
+    /**
+     * Symmetric distance matrix from one round of reports. Entries stay null where either device
+     * failed to hear one of the four chirps the pair needs.
+     */
+    buildDistanceMatrix(reports, { speedOfSound = 343, maxDistance = 40 } = {}) {
+        const count = reports.length;
+        const matrix = Array.from({ length: count }, () => new Array(count).fill(null));
+
+        for (let i = 0; i < count; i++) {
+            matrix[i][i] = 0;
+
+            for (let j = i + 1; j < count; j++) {
+                const distance = this.distanceBetween(reports[i], reports[j], speedOfSound);
+                if (distance === null || distance < -1 || distance > maxDistance) continue;
+
+                matrix[i][j] = Math.max(0, distance);
+                matrix[j][i] = matrix[i][j];
+            }
+        }
+
+        return matrix;
+    },
+
+    distanceBetween(deviceA, deviceB, speedOfSound) {
+        const a1 = deviceA.peaks[deviceA.slot];
+        const a2 = deviceA.peaks[deviceB.slot];
+        const b1 = deviceB.peaks[deviceA.slot];
+        const b2 = deviceB.peaks[deviceB.slot];
+        if (a1 === null || a2 === null || b1 === null || b2 === null) return null;
+
+        return this.pairDistance({
+            a1,
+            a2,
+            b1,
+            b2,
+            sampleRateA: deviceA.sampleRate,
+            sampleRateB: deviceB.sampleRate,
+            speedOfSound,
+            epsilonA: deviceA.epsilon ?? 0,
+            epsilonB: deviceB.epsilon ?? 0
+        });
+    },
+
+    /**
+     * Largest set of devices linked by measured distances. Anything outside it cannot be placed
+     * relative to the others, and leaving it in makes the completed matrix infinite.
+     */
+    largestConnectedComponent(matrix) {
+        const unvisited = new Set(matrix.map((_, index) => index));
+        let largest = [];
+
+        while (unvisited.size > 0) {
+            const component = [];
+            const queue = [unvisited.values().next().value];
+            unvisited.delete(queue[0]);
+
+            while (queue.length > 0) {
+                const current = queue.pop();
+                component.push(current);
+
+                for (const next of unvisited)
+                    if (matrix[current][next] !== null) {
+                        unvisited.delete(next);
+                        queue.push(next);
+                    }
+            }
+
+            if (component.length > largest.length) largest = component;
+        }
+
+        return largest.sort((left, right) => left - right);
+    },
+
+    /**
+     * Drop devices whose distances are geometrically impossible. One device reporting a bad peak
+     * distorts the whole layout, so the worst triangle-inequality offender is removed and the
+     * check repeated. Below four devices there is no redundancy left and nothing can be checked.
+     */
+    rejectOutliers(matrix, candidates, tolerance = 0.5) {
+        const keep = [...candidates];
+
+        while (keep.length > 3) {
+            const violations = this.countTriangleViolations(matrix, keep, tolerance);
+            const worst = violations.reduce((best, count, index) => (count > violations[best] ? index : best), 0);
+            if (violations[worst] === 0) break;
+
+            keep.splice(worst, 1);
+        }
+
+        return keep;
+    },
+
+    submatrix(matrix, indices) {
+        return indices.map(row => indices.map(column => matrix[row][column]));
+    },
+
+    countTriangleViolations(matrix, keep, tolerance) {
+        const violations = new Array(keep.length).fill(0);
+
+        for (let i = 0; i < keep.length; i++) {
+            for (let j = i + 1; j < keep.length; j++) {
+                for (let k = j + 1; k < keep.length; k++) {
+                    const sides = [matrix[keep[i]][keep[j]], matrix[keep[j]][keep[k]], matrix[keep[i]][keep[k]]];
+                    if (sides.some(side => side === null)) continue;
+
+                    const longest = Math.max(...sides);
+                    const perimeter = sides.reduce((sum, side) => sum + side, 0);
+                    if (longest <= perimeter - longest + tolerance) continue;
+
+                    violations[i]++;
+                    violations[j]++;
+                    violations[k]++;
+                }
+            }
+        }
+
+        return violations;
+    },
+
+    /** Fill gaps with the shortest known path between the two devices so MDS gets a full matrix. */
+    completeMatrix(matrix) {
+        const count = matrix.length;
+        const filled = matrix.map(row => row.map(value => (value === null ? Infinity : value)));
+
+        for (let via = 0; via < count; via++)
+            for (let i = 0; i < count; i++)
+                for (let j = 0; j < count; j++)
+                    filled[i][j] = Math.min(filled[i][j], filled[i][via] + filled[via][j]);
+
+        return filled;
+    },
+
+    /** Jacobi eigendecomposition of a symmetric matrix. Returns eigenvalues and column vectors. */
+    symmetricEigen(matrix, maxSweeps = 100, tolerance = 1e-14) {
+        const count = matrix.length;
+        const working = matrix.map(row => Float64Array.from(row));
+        const vectors = Array.from({ length: count }, (_, i) => {
+            const column = new Float64Array(count);
+            column[i] = 1;
+            return column;
+        });
+
+        for (let sweep = 0; sweep < maxSweeps; sweep++) {
+            if (this.offDiagonalMagnitude(working) < tolerance) break;
+
+            for (let p = 0; p < count - 1; p++)
+                for (let q = p + 1; q < count; q++)
+                    this.rotateOut(working, vectors, p, q);
+        }
+
+        return {
+            values: working.map((row, i) => row[i]),
+            vectors
+        };
+    },
+
+    offDiagonalMagnitude(matrix) {
+        let total = 0;
+
+        for (let i = 0; i < matrix.length; i++)
+            for (let j = i + 1; j < matrix.length; j++) total += matrix[i][j] * matrix[i][j];
+
+        return total;
+    },
+
+    rotateOut(matrix, vectors, p, q) {
+        if (Math.abs(matrix[p][q]) < 1e-300) return matrix;
+
+        const theta = (matrix[q][q] - matrix[p][p]) / (2 * matrix[p][q]);
+        const sign = theta >= 0 ? 1 : -1;
+        const tangent = sign / (Math.abs(theta) + Math.sqrt(theta * theta + 1));
+        const cosine = 1 / Math.sqrt(tangent * tangent + 1);
+        const sine = tangent * cosine;
+        const count = matrix.length;
+
+        for (let k = 0; k < count; k++) {
+            const left = matrix[k][p];
+            const right = matrix[k][q];
+            matrix[k][p] = cosine * left - sine * right;
+            matrix[k][q] = sine * left + cosine * right;
+        }
+
+        for (let k = 0; k < count; k++) {
+            const left = matrix[p][k];
+            const right = matrix[q][k];
+            matrix[p][k] = cosine * left - sine * right;
+            matrix[q][k] = sine * left + cosine * right;
+        }
+
+        for (let k = 0; k < count; k++) {
+            const left = vectors[k][p];
+            const right = vectors[k][q];
+            vectors[k][p] = cosine * left - sine * right;
+            vectors[k][q] = sine * left + cosine * right;
+        }
+
+        return matrix;
+    },
+
+    /**
+     * Classical multidimensional scaling: coordinates whose pairwise distances best reproduce the
+     * matrix. The result is only defined up to rotation, translation and mirroring.
+     */
+    classicalMds(distances, dimensions = 2) {
+        const count = distances.length;
+        const squared = distances.map(row => row.map(value => value * value));
+        const rowMeans = squared.map(row => row.reduce((sum, value) => sum + value, 0) / count);
+        const grandMean = rowMeans.reduce((sum, value) => sum + value, 0) / count;
+
+        const centred = squared.map((row, i) => row.map((value, j) => -0.5 * (value - rowMeans[i] - rowMeans[j] + grandMean)));
+        const { values, vectors } = this.symmetricEigen(centred);
+        const order = values
+            .map((value, index) => ({ value, index }))
+            .sort((left, right) => right.value - left.value)
+            .slice(0, dimensions);
+
+        return Array.from({ length: count }, (_, i) =>
+            order.map(({ value, index }) => vectors[i][index] * Math.sqrt(Math.max(0, value)))
+        );
+    },
+
+    /**
+     * Rotate, mirror and translate a constellation onto a reference layout. Without this, every
+     * solve returns an arbitrary orientation and the display spins and flips between updates.
+     */
+    alignToReference(points, reference) {
+        if (!reference || reference.length !== points.length || points.length === 0) return points;
+
+        const pointCentre = this.centroid(points);
+        const referenceCentre = this.centroid(reference);
+        let best = null;
+
+        for (const mirror of [1, -1]) {
+            const candidate = this.rotateOnto(points, reference, pointCentre, referenceCentre, mirror);
+            if (!best || candidate.residual < best.residual) best = candidate;
+        }
+
+        return best.points;
+    },
+
+    centroid(points) {
+        const sum = points.reduce((total, [x, y]) => [total[0] + x, total[1] + y], [0, 0]);
+        return [sum[0] / points.length, sum[1] / points.length];
+    },
+
+    rotateOnto(points, reference, pointCentre, referenceCentre, mirror) {
+        let sineTerm = 0;
+        let cosineTerm = 0;
+
+        for (let i = 0; i < points.length; i++) {
+            const px = (points[i][0] - pointCentre[0]) * mirror;
+            const py = points[i][1] - pointCentre[1];
+            const qx = reference[i][0] - referenceCentre[0];
+            const qy = reference[i][1] - referenceCentre[1];
+            sineTerm += px * qy - py * qx;
+            cosineTerm += px * qx + py * qy;
+        }
+
+        const angle = Math.atan2(sineTerm, cosineTerm);
+        const cosine = Math.cos(angle);
+        const sine = Math.sin(angle);
+        let residual = 0;
+
+        const aligned = points.map((point, i) => {
+            const px = (point[0] - pointCentre[0]) * mirror;
+            const py = point[1] - pointCentre[1];
+            const x = px * cosine - py * sine + referenceCentre[0];
+            const y = px * sine + py * cosine + referenceCentre[1];
+            residual += (x - reference[i][0]) ** 2 + (y - reference[i][1]) ** 2;
+            return [x, y];
+        });
+
+        return { points: aligned, residual };
+    },
+
+    /**
+     * Full solve for one round: distances, connectivity, outlier rejection, then a constellation
+     * aligned onto the previous frame.
+     *
+     * <c>previousPoints</c> is indexed by report position, with null for devices that were dropped
+     * last round, so alignment survives devices coming and going.
+     */
+    solveRound(reports, { speedOfSound = 343, previousPoints = null, tolerance = 0.5 } = {}) {
+        const matrix = this.buildDistanceMatrix(reports, { speedOfSound });
+        const connected = this.largestConnectedComponent(matrix);
+        const keep = this.rejectOutliers(matrix, connected, tolerance);
+        const points = keep.length >= 2 ? this.classicalMds(this.completeMatrix(this.submatrix(matrix, keep))) : [];
+        const reference = previousPoints ? keep.map(index => previousPoints[index]) : null;
+        const alignable = reference?.length === points.length && reference.every(Boolean);
+
+        return {
+            matrix,
+            keep,
+            points: alignable ? this.alignToReference(points, reference) : points
+        };
+    }
+};
+
+if (typeof window !== "undefined") window.EchoDsp = EchoDsp;

JoshHeaps.Net/wwwroot/js/EchoScripts/EchoSession.js

@@ -0,0 +1,269 @@
+/*
+ * Round lifecycle: join a room, chirp when told to, measure every chirp in our own recording, and
+ * report the frame indices. Peaks are reported relative to the analysis window rather than to an
+ * absolute frame — every measurement is a difference within one device's own recording, so a
+ * constant per-device origin cancels.
+ *
+ * Both the chirp and the analysis are driven by the audio clock rather than by timers: a hidden tab
+ * has its timers throttled to roughly once a second, which is long enough to put its chirp in
+ * another device's slot and turn the whole round into nonsense.
+ */
+const EchoSession = {
+    LEAD_IN_SECONDS: 0.25,
+    TEMPERATURE_CELSIUS: 20,
+    MAX_OUTPUT_LATENCY_SECONDS: 0.35,
+    CHIRP: { durationSeconds: 0.05, startHz: 2000, endHz: 8000 },
+
+    CLOCK_SAMPLES: 5,
+    LATE_TOLERANCE_SECONDS: 0.05,
+
+    connection: null,
+    deviceId: null,
+    roomCode: null,
+    serverOffsetMs: 0,
+    skippedRounds: 0,
+    devices: [],
+    chirp: null,
+    pending: null,
+    lastRound: null,
+    hintsByDevice: {},
+    previousPoints: null,
+    epsilon: 0.08,
+    onUpdate: () => {},
+
+    async join(roomCode, displayName, { onUpdate }) {
+        this.onUpdate = onUpdate ?? this.onUpdate;
+        const audio = await EchoAudio.start();
+        this.chirp = EchoDsp.makeChirp({ sampleRate: audio.sampleRate, ...this.CHIRP });
+        EchoAudio.onSamples = frame => this.analyseIfCaptured(frame);
+
+        this.connection = new signalR.HubConnectionBuilder().withUrl("/echoHub").withAutomaticReconnect().build();
+        this.connection.on("RoomChanged", room => this.handleRoomChanged(room));
+        this.connection.on("RoundStarting", schedule => this.handleRoundStarting(schedule));
+        this.connection.on("RoundComplete", result => this.handleRoundComplete(result));
+        await this.connection.start();
+
+        const joined = await this.connection.invoke("JoinRoom", roomCode, displayName, audio.sampleRate);
+        this.deviceId = joined.deviceId;
+        this.roomCode = joined.roomCode;
+        this.devices = joined.room.devices;
+        this.serverOffsetMs = await this.estimateServerOffset();
+
+        return { ...joined, audio, serverOffsetMs: this.serverOffsetMs };
+    },
+
+    /**
+     * Offset from the server clock, by the usual round-trip midpoint. Only needs to be good enough
+     * to identify which chirp belongs to which slot, which is tens of milliseconds — the ranging
+     * itself never uses a shared clock.
+     */
+    async estimateServerOffset() {
+        const offsets = [];
+
+        for (let attempt = 0; attempt < this.CLOCK_SAMPLES; attempt++) {
+            const sent = Date.now();
+            const serverNow = await this.connection.invoke("ServerTime");
+            const received = Date.now();
+            offsets.push(serverNow - (sent + received) / 2);
+        }
+
+        offsets.sort((left, right) => left - right);
+        return offsets[offsets.length >> 1];
+    },
+
+    serverNowMs() {
+        return Date.now() + this.serverOffsetMs;
+    },
+
+    handleRoomChanged(room) {
+        this.devices = room.devices;
+        this.previousPoints = null;
+        this.hintsByDevice = {};
+        this.onUpdate({ kind: "room", room });
+        return room;
+    },
+
+    /**
+     * Schedule our chirp for our slot on the audio clock, and record which frames this round will
+     * occupy so the analysis can start the moment that audio has actually been captured.
+     */
+    handleRoundStarting(schedule) {
+        const ownSlot = schedule.slotOrder.indexOf(this.deviceId);
+        if (ownSlot < 0 || !EchoAudio.context) return null;
+
+        const sampleRate = EchoAudio.context.sampleRate;
+        const slotSeconds = schedule.slotMilliseconds / 1000;
+        const secondsUntilStart = (schedule.startsAtUnixMs - this.serverNowMs()) / 1000;
+        const roundStartTime = EchoAudio.context.currentTime + secondsUntilStart;
+        const playAtTime = roundStartTime + ownSlot * slotSeconds;
+
+        // Sitting a round out is far better than chirping late: a chirp in the wrong slot is
+        // attributed to the wrong device and ruins the round for everyone, whereas a missing chirp
+        // costs only this pair, this round.
+        if (playAtTime < EchoAudio.context.currentTime - this.LATE_TOLERANCE_SECONDS) {
+            this.skippedRounds++;
+            this.onUpdate({ kind: "skipped", schedule, lateBySeconds: EchoAudio.context.currentTime - playAtTime });
+            return null;
+        }
+
+        const scheduledFrame = EchoAudio.play(this.chirp, playAtTime);
+
+        const round = {
+            schedule,
+            ownSlot,
+            sampleRate,
+            scheduledFrame,
+            slotSamples: Math.round(slotSeconds * sampleRate),
+            leadInSamples: Math.round(this.LEAD_IN_SECONDS * sampleRate),
+            startFrame: EchoAudio.frameAt(roundStartTime),
+            outputLatencyMs: Math.round(EchoAudio.outputLatencySeconds() * 1000),
+            captureLagMs: Math.round(EchoAudio.captureLagSeconds() * 1000)
+        };
+
+        round.windowStart = round.startFrame - round.leadInSamples;
+        round.windowLength =
+            round.leadInSamples +
+            schedule.slotOrder.length * round.slotSamples +
+            Math.round((schedule.tailMilliseconds / 1000) * sampleRate);
+
+        this.pending = round;
+        this.onUpdate({ kind: "roundStarting", round });
+        return round;
+    },
+
+    /**
+     * Run as soon as the round's audio exists in the ring. Driven by captured audio rather than a
+     * timer so a throttled tab still analyses on time.
+     */
+    analyseIfCaptured(highestFrame) {
+        const round = this.pending;
+        if (!round) return null;
+        if (highestFrame < round.windowStart + round.windowLength) return null;
+
+        this.pending = null;
+        return this.analyse(round);
+    },
+
+    analyse(round) {
+        this.lastRound = round;
+        const recording = EchoAudio.read(round.windowStart, round.windowLength);
+        if (!recording) return null;
+
+        const envelope = EchoDsp.matchedFilterEnvelope(recording, this.chirp);
+        const detected = EchoDsp.detectSlotPeaks({
+            envelope,
+            slotCount: round.schedule.slotOrder.length,
+            slotSamples: round.slotSamples,
+            ownSlot: round.ownSlot,
+            // Anchored on the frame the chirp was scheduled for, so the only unknown left is how
+            // long the speaker takes to actually emit it.
+            ownSearchStart: round.scheduledFrame - round.windowStart,
+            ownSearchSamples: Math.round((this.MAX_OUTPUT_LATENCY_SECONDS + this.CHIRP.durationSeconds) * round.sampleRate),
+            slotHints: this.hintsFor(round.schedule)
+        });
+
+        const diagnostics = this.describeRound(round, detected);
+        this.onUpdate({ kind: "envelope", envelope, detected, round, diagnostics });
+        if (!detected) return null;
+
+        this.rememberHints(round.schedule, detected, round.slotSamples);
+        return this.report(round, detected);
+    },
+
+    describeRound(round, detected) {
+        const millisecondsPer = 1000 / round.sampleRate;
+
+        return {
+            captureLagMs: round.captureLagMs,
+            outputLatencyMs: round.outputLatencyMs,
+            serverOffsetMs: Math.round(this.serverOffsetMs),
+            skippedRounds: this.skippedRounds,
+            clipping: EchoAudio.peakAmplitude >= 0.99,
+            inputPeak: Number(EchoAudio.peakAmplitude.toFixed(3)),
+            ownFound: Boolean(detected?.peaks[round.ownSlot]),
+            slots: round.schedule.slotOrder.map((deviceId, slot) => ({
+                deviceId,
+                own: slot === round.ownSlot,
+                residualMs: detected?.peaks[slot]
+                    ? Math.round((detected.peaks[slot].index - (detected.anchor + slot * round.slotSamples)) * millisecondsPer)
+                    : null,
+                snr: detected?.peaks[slot] ? Math.round(detected.peaks[slot].snr) : null
+            }))
+        };
+    },
+
+    report(round, detected) {
+        return this.connection.invoke("ReportRound", {
+            deviceId: this.deviceId,
+            roundId: round.schedule.roundId,
+            slot: round.ownSlot,
+            sampleRate: round.sampleRate,
+            epsilon: this.epsilon,
+            peaks: detected.peaks.map(peak => peak?.index ?? null)
+        });
+    },
+
+    /**
+     * Where each device's chirp actually landed last round, relative to where the slot said it
+     * would. Output latency differs by tens of milliseconds per device and is stable, so carrying
+     * the residual forward keeps the search windows centred instead of merely wide.
+     */
+    rememberHints(schedule, detected, slotSamples) {
+        schedule.slotOrder.forEach((deviceId, slot) => {
+            const peak = detected.peaks[slot];
+            if (!peak) return;
+            this.hintsByDevice[deviceId] = peak.index - (detected.anchor + slot * slotSamples);
+        });
+
+        return this.hintsByDevice;
+    },
+
+    hintsFor(schedule) {
+        return schedule.slotOrder.map(deviceId => this.hintsByDevice[deviceId] ?? 0);
+    },
+
+    handleRoundComplete(result) {
+        const reports = result.reports.map(report => ({ ...report, peaks: report.peaks ?? [] }));
+        const solved = EchoDsp.solveRound(reports, {
+            speedOfSound: EchoDsp.speedOfSound(this.TEMPERATURE_CELSIUS),
+            previousPoints: this.previousPoints
+        });
+
+        this.previousPoints = this.pointsByReportIndex(reports, solved);
+        this.onUpdate({ kind: "solved", result, reports, solved, deviceId: this.deviceId });
+        return solved;
+    },
+
+    pointsByReportIndex(reports, solved) {
+        const points = new Array(reports.length).fill(null);
+        solved.keep.forEach((reportIndex, i) => {
+            points[reportIndex] = solved.points[i];
+        });
+        return points;
+    },
+
+    setEpsilon(metres) {
+        this.epsilon = metres;
+        localStorage.setItem("echo.epsilon", String(metres));
+        return this.epsilon;
+    },
+
+    loadEpsilon() {
+        const stored = Number(localStorage.getItem("echo.epsilon"));
+        this.epsilon = Number.isFinite(stored) && stored > 0 ? stored : 0.08;
+        return this.epsilon;
+    },
+
+    async leave() {
+        await this.connection?.invoke("LeaveRoom").catch(() => {});
+        await this.connection?.stop();
+        await EchoAudio.stop();
+        this.connection = null;
+        this.pending = null;
+        this.previousPoints = null;
+        this.hintsByDevice = {};
+        return true;
+    }
+};
+
+if (typeof window !== "undefined") window.EchoSession = EchoSession;

JoshHeaps.Net/wwwroot/js/EchoScripts/EchoSim.js

@@ -0,0 +1,213 @@
+/*
+ * Virtual room for exercising the real ranging pipeline without microphones. Synthesizes what
+ * each device would have recorded — propagation delay, reflections, noise, per-device clock offset
+ * and unknown output latency — then runs the same EchoDsp code the page runs.
+ */
+const EchoSim = {
+    DEFAULTS: {
+        sampleRate: 48000,
+        slotSeconds: 0.4,
+        tailSeconds: 0.5,
+        speedOfSound: 343,
+        noiseAmplitude: 0.01,
+        referenceGain: 0.5,
+        minimumPathMetres: 0.25,
+        maximumOutputLatencySeconds: 0.2,
+        chirp: { durationSeconds: 0.05, startHz: 2000, endHz: 8000 },
+        reflectionsPerPath: 2,
+        reflectionExtraRange: [0.4, 4.0],
+        reflectionGainRange: [0.2, 0.8],
+        seed: 20260730
+    },
+
+    randomGenerator(seed) {
+        let state = seed >>> 0;
+
+        return () => {
+            state = (state + 0x6d2b79f5) >>> 0;
+            let mixed = Math.imul(state ^ (state >>> 15), 1 | state);
+            mixed = (mixed + Math.imul(mixed ^ (mixed >>> 7), 61 | mixed)) ^ mixed;
+            return ((mixed ^ (mixed >>> 14)) >>> 0) / 4294967296;
+        };
+    },
+
+    separation(first, second) {
+        return Math.hypot(first[0] - second[0], first[1] - second[1]);
+    },
+
+    buildConfiguration(overrides = {}) {
+        const config = { ...this.DEFAULTS, ...overrides };
+        const count = config.positions.length;
+
+        config.chirp = { ...this.DEFAULTS.chirp, ...(overrides.chirp ?? {}) };
+        config.epsilon ??= new Array(count).fill(0.05);
+        config.clockOffsets ??= config.positions.map((_, i) => i * 7919);
+        config.outputLatencies ??= config.positions.map((_, i) => 0.02 + 0.03 * i);
+        config.scheduleJitter ??= config.positions.map((_, i) => 0.004 * i);
+        config.reflections ??= this.buildReflectionTable(config);
+        return config;
+    },
+
+    /**
+     * Multipath for every source-to-listener path independently. Giving every path the same echo
+     * would be worthless as a test: an identical bias on all four arrivals cancels out of the
+     * range formula, so a uniform echo model hides exactly the error it is supposed to expose.
+     */
+    buildReflectionTable(config) {
+        const random = this.randomGenerator(config.seed ^ 0x5f3759df);
+        const spread = (range, value) => range[0] + value * (range[1] - range[0]);
+
+        return config.positions.map(() =>
+            config.positions.map(() =>
+                Array.from({ length: config.reflectionsPerPath }, () => ({
+                    extraMetres: spread(config.reflectionExtraRange, random()),
+                    gain: spread(config.reflectionGainRange, random())
+                }))
+            )
+        );
+    },
+
+    reflectionsFor(config, source, listener) {
+        return Array.isArray(config.reflections[0]) ? config.reflections[source][listener] : config.reflections;
+    },
+
+    /** One recording per device, plus the index each device believes it started playing at. */
+    synthesizeRound(config) {
+        const { positions, sampleRate, slotSeconds, tailSeconds } = config;
+        const random = this.randomGenerator(config.seed);
+        const template = EchoDsp.makeChirp({ sampleRate, ...config.chirp });
+        const maximumOffset = Math.max(...config.clockOffsets);
+        const length = Math.ceil((positions.length * slotSeconds + tailSeconds) * sampleRate) + maximumOffset;
+
+        const devices = positions.map((_, index) => ({
+            recording: this.noiseBuffer(length, config.noiseAmplitude, random),
+            ownSearchStart: Math.round((index * slotSeconds + config.scheduleJitter[index]) * sampleRate) + config.clockOffsets[index]
+        }));
+
+        for (let source = 0; source < positions.length; source++)
+            for (let listener = 0; listener < positions.length; listener++)
+                this.mixArrivals(devices[listener].recording, template, config, source, listener);
+
+        return { devices, template };
+    },
+
+    noiseBuffer(length, amplitude, random) {
+        const buffer = new Float32Array(length);
+        for (let i = 0; i < length; i++) buffer[i] = (random() * 2 - 1) * amplitude;
+        return buffer;
+    },
+
+    mixArrivals(recording, template, config, source, listener) {
+        const emissionSeconds =
+            source * config.slotSeconds + config.scheduleJitter[source] + config.outputLatencies[source];
+        const directMetres =
+            source === listener ? config.epsilon[source] : this.separation(config.positions[source], config.positions[listener]);
+
+        const paths = [
+            { metres: directMetres, gain: 1 },
+            ...this.reflectionsFor(config, source, listener).map(({ extraMetres, gain }) => ({
+                metres: directMetres + extraMetres,
+                gain
+            }))
+        ];
+
+        for (const path of paths) {
+            const arrival = emissionSeconds + path.metres / config.speedOfSound;
+            const amplitude =
+                (config.referenceGain / Math.max(path.metres, config.minimumPathMetres)) * path.gain;
+            this.addAt(recording, template, Math.round(arrival * config.sampleRate) + config.clockOffsets[listener], amplitude);
+        }
+
+        return recording;
+    },
+
+    addAt(recording, template, offset, amplitude) {
+        const start = Math.max(0, offset);
+        const end = Math.min(recording.length, offset + template.length);
+
+        for (let i = start; i < end; i++) recording[i] += template[i - offset] * amplitude;
+
+        return recording;
+    },
+
+    /** Run every device's recording through detection and return one report per device. */
+    detectAll({ devices, template }, config) {
+        const slotSamples = Math.round(config.slotSeconds * config.sampleRate);
+        const searchSamples = Math.round(
+            (config.maximumOutputLatencySeconds + config.chirp.durationSeconds + 0.05) * config.sampleRate
+        );
+
+        return devices.map((device, slot) => {
+            const envelope = EchoDsp.matchedFilterEnvelope(device.recording, template);
+            const detected = EchoDsp.detectSlotPeaks({
+                envelope,
+                slotCount: devices.length,
+                slotSamples,
+                ownSlot: slot,
+                ownSearchStart: device.ownSearchStart,
+                ownSearchSamples: searchSamples,
+                peakOptions: config.peakOptions ?? {}
+            });
+
+            return {
+                deviceId: `sim-${slot}`,
+                slot,
+                sampleRate: config.sampleRate,
+                epsilon: config.epsilon[slot],
+                peaks: (detected?.peaks ?? new Array(devices.length).fill(null)).map(peak => peak?.index ?? null)
+            };
+        });
+    },
+
+    /** Synthesize, detect and solve, reporting recovered geometry against the ground truth. */
+    runRound(overrides = {}) {
+        const config = this.buildConfiguration(overrides);
+        const round = this.synthesizeRound(config);
+        const reports = this.detectAll(round, config);
+        const solved = EchoDsp.solveRound(reports, { speedOfSound: config.speedOfSound });
+
+        return {
+            config,
+            reports,
+            ...solved,
+            distanceErrors: this.distanceErrors(solved.matrix, config),
+            positionErrors: this.positionErrors(solved, config)
+        };
+    },
+
+    distanceErrors(matrix, config) {
+        const errors = [];
+
+        for (let i = 0; i < matrix.length; i++)
+            for (let j = i + 1; j < matrix.length; j++) {
+                const truth = this.separation(config.positions[i], config.positions[j]);
+                errors.push({
+                    pair: [i, j],
+                    truth,
+                    measured: matrix[i][j],
+                    error: matrix[i][j] === null ? null : matrix[i][j] - truth
+                });
+            }
+
+        return errors;
+    },
+
+    positionErrors({ keep, points }, config) {
+        if (points.length !== keep.length || points.length < 2) return [];
+
+        const truth = keep.map(index => config.positions[index]);
+        const aligned = EchoDsp.alignToReference(points, truth);
+        return aligned.map((point, i) => this.separation(point, truth[i]));
+    },
+
+    worstDistanceError(result) {
+        const magnitudes = result.distanceErrors.map(({ error }) => (error === null ? Infinity : Math.abs(error)));
+        return magnitudes.length === 0 ? 0 : Math.max(...magnitudes);
+    },
+
+    worstPositionError(result) {
+        return result.positionErrors.length === 0 ? Infinity : Math.max(...result.positionErrors);
+    }
+};
+
+if (typeof window !== "undefined") window.EchoSim = EchoSim;

JoshHeaps.Net/wwwroot/js/EchoScripts/echoMain.js

@@ -0,0 +1,282 @@
+/*
+ * Page wiring for /echo. Renders what the session measures: the matched-filter trace with the
+ * arrivals it picked, the pairwise ranges, and — while only two devices are present — one large
+ * number, because that number is the whole measurement.
+ */
+const EchoPage = {
+    HISTORY_LENGTH: 12,
+
+    elements: {},
+    lastSolved: null,
+    lastDiagnostics: null,
+    history: [],
+    roundsSeen: 0,
+
+    start() {
+        this.elements = {
+            room: document.getElementById("echoRoom"),
+            name: document.getElementById("echoName"),
+            join: document.getElementById("echoJoin"),
+            leave: document.getElementById("echoLeave"),
+            status: document.getElementById("echoStatus"),
+            warnings: document.getElementById("echoWarnings"),
+            readout: document.getElementById("echoReadout"),
+            pairs: document.getElementById("echoPairs"),
+            roster: document.getElementById("echoRoster"),
+            trace: document.getElementById("echoTrace"),
+            epsilon: document.getElementById("echoEpsilon"),
+            shareLink: document.getElementById("echoShareLink"),
+            diagnostics: document.getElementById("echoDiagnostics")
+        };
+
+        this.elements.room.value = new URLSearchParams(location.search).get("room") ?? this.randomCode();
+        this.elements.epsilon.value = EchoSession.loadEpsilon();
+        this.elements.epsilon.addEventListener("change", () => this.applyEpsilon());
+        this.elements.join.addEventListener("click", () => this.join());
+        this.elements.leave.addEventListener("click", () => this.leave());
+
+        return this;
+    },
+
+    randomCode() {
+        const alphabet = "ABCDEFGHJKLMNPQRSTUVWXYZ23456789";
+        return Array.from({ length: 4 }, () => alphabet[Math.floor(Math.random() * alphabet.length)]).join("");
+    },
+
+    applyEpsilon() {
+        const metres = Number(this.elements.epsilon.value);
+        if (!Number.isFinite(metres) || metres < 0) return null;
+
+        EchoSession.setEpsilon(metres);
+        return metres;
+    },
+
+    async join() {
+        const roomCode = this.elements.room.value.trim().toUpperCase();
+        if (!roomCode) return null;
+
+        this.setStatus("Requesting the microphone…");
+        this.elements.join.disabled = true;
+
+        try {
+            const joined = await EchoSession.join(roomCode, this.deviceName(), { onUpdate: update => this.handle(update) });
+            this.showJoined(joined);
+            return joined;
+        } catch (error) {
+            this.setStatus(`Could not start: ${error.message}`);
+            this.elements.join.disabled = false;
+            return null;
+        }
+    },
+
+    deviceName() {
+        const typed = this.elements.name.value.trim();
+        if (typed) return typed;
+
+        return /android|iphone|ipad|mobile/i.test(navigator.userAgent) ? "phone" : "laptop";
+    },
+
+    showJoined(joined) {
+        this.elements.leave.hidden = false;
+        this.elements.room.disabled = true;
+        this.elements.name.disabled = true;
+        this.elements.shareLink.textContent = `${location.origin}/echo?room=${joined.roomCode}`;
+        this.elements.shareLink.href = `/echo?room=${joined.roomCode}`;
+        this.renderWarnings(joined.audio);
+        this.renderRoster(joined.room.devices);
+        this.setStatus(`Listening at ${joined.audio.sampleRate}Hz. Open the same room on another device.`);
+        return joined;
+    },
+
+    async leave() {
+        await EchoSession.leave();
+        this.elements.leave.hidden = true;
+        this.elements.join.disabled = false;
+        this.elements.room.disabled = false;
+        this.elements.name.disabled = false;
+        this.setStatus("Left the room.");
+        return true;
+    },
+
+    handle(update) {
+        if (update.kind === "room") return this.renderRoster(update.room.devices);
+        if (update.kind === "envelope") {
+            this.renderDiagnostics(update.diagnostics);
+            return this.renderTrace(update);
+        }
+        if (update.kind === "solved") return this.renderSolved(update);
+        return null;
+    },
+
+    /**
+     * Per-slot residual is the diagnostic that matters: it is how far each chirp landed from where
+     * its slot said it would. Steady residuals mean the arrivals are being attributed correctly;
+     * residuals jumping by more than a slot mean they are not, and every range is then meaningless.
+     */
+    renderDiagnostics(diagnostics) {
+        if (!diagnostics) return null;
+        this.lastDiagnostics = diagnostics;
+
+        const slots = diagnostics.slots
+            .map(slot => {
+                const label = slot.own ? "self" : slot.deviceId;
+                const residual = slot.residualMs === null ? "missed" : `${slot.residualMs > 0 ? "+" : ""}${slot.residualMs}ms`;
+                return `<li class="${slot.residualMs === null ? "echo-missed" : ""}">${label} · ${residual}${slot.snr === null ? "" : ` · snr ${slot.snr}`}</li>`;
+            })
+            .join("");
+
+        this.elements.diagnostics.innerHTML = `
+            <ul class="echo-slots">${slots}</ul>
+            <p class="echo-diag-line">
+                capture lag ${diagnostics.captureLagMs}ms · output latency ${diagnostics.outputLatencyMs}ms ·
+                clock offset ${diagnostics.serverOffsetMs}ms · rounds sat out ${diagnostics.skippedRounds} ·
+                input peak ${diagnostics.inputPeak}${diagnostics.clipping ? " <strong>CLIPPING</strong>" : ""}
+            </p>`;
+
+        return diagnostics;
+    },
+
+    recordHistory(metres) {
+        this.history.push(metres);
+        if (this.history.length > this.HISTORY_LENGTH) this.history.shift();
+
+        const spread = Math.max(...this.history) - Math.min(...this.history);
+        return { spread, count: this.history.length };
+    },
+
+    setStatus(message) {
+        this.elements.status.textContent = message;
+        return message;
+    },
+
+    renderWarnings(audio) {
+        this.elements.warnings.innerHTML = "";
+
+        for (const warning of audio.warnings) {
+            const item = document.createElement("p");
+            item.className = "echo-warning";
+            item.textContent = warning;
+            this.elements.warnings.appendChild(item);
+        }
+
+        return audio.warnings.length;
+    },
+
+    renderRoster(devices) {
+        this.elements.roster.innerHTML = "";
+
+        for (const device of devices) {
+            const row = document.createElement("li");
+            row.className = device.deviceId === EchoSession.deviceId ? "echo-device echo-device-self" : "echo-device";
+            row.textContent = `${device.displayName} · ${device.sampleRate}Hz`;
+            this.elements.roster.appendChild(row);
+        }
+
+        if (devices.length < 2) this.setStatus("Waiting for a second device to join this room.");
+        return devices.length;
+    },
+
+    renderSolved({ result, reports, solved }) {
+        this.roundsSeen++;
+        const raw = EchoDsp.buildDistanceMatrix(
+            reports.map(report => ({ ...report, epsilon: 0 })),
+            { speedOfSound: EchoDsp.speedOfSound(EchoSession.TEMPERATURE_CELSIUS) }
+        );
+
+        this.lastSolved = { result, reports, solved, raw };
+        this.renderReadout(reports, solved, raw);
+        this.renderPairs(reports, solved, raw);
+        this.setStatus(`Round ${this.roundsSeen} · ${reports.length} of ${EchoSession.devices.length} devices reported`);
+        return solved;
+    },
+
+    renderReadout(reports, solved, raw) {
+        const readout = this.elements.readout;
+
+        if (reports.length !== 2 || solved.matrix[0][1] === null) {
+            readout.innerHTML = `<span class="echo-readout-idle">${reports.length < 2 ? "waiting for a pair" : "measuring…"}</span>`;
+            return null;
+        }
+
+        const corrected = solved.matrix[0][1];
+        const { spread, count } = this.recordHistory(corrected);
+        readout.innerHTML = `
+            <span class="echo-metres">${corrected.toFixed(2)}<small>m</small></span>
+            <span class="echo-readout-detail">
+                raw ${raw[0][1].toFixed(3)}m · calibration +${(corrected - raw[0][1]).toFixed(3)}m ·
+                spread over last ${count} ${spread.toFixed(2)}m
+            </span>`;
+
+        return corrected;
+    },
+
+    renderPairs(reports, solved, raw) {
+        const rows = [];
+
+        for (let i = 0; i < reports.length; i++)
+            for (let j = i + 1; j < reports.length; j++) {
+                const dropped = !solved.keep.includes(i) || !solved.keep.includes(j);
+                const measured = solved.matrix[i][j];
+                rows.push(`<tr class="${dropped ? "echo-dropped" : ""}">
+                    <td>${reports[i].deviceId} ↔ ${reports[j].deviceId}</td>
+                    <td>${measured === null ? "—" : measured.toFixed(3) + " m"}</td>
+                    <td>${raw[i][j] === null ? "—" : raw[i][j].toFixed(3) + " m"}</td>
+                </tr>`);
+            }
+
+        this.elements.pairs.innerHTML = rows.length
+            ? `<table><thead><tr><th>pair</th><th>range</th><th>raw</th></tr></thead><tbody>${rows.join("")}</tbody></table>`
+            : "";
+
+        return rows.length;
+    },
+
+    /** The matched-filter trace, with a marker on each arrival the detector accepted. */
+    renderTrace({ envelope, detected, round }) {
+        const canvas = this.elements.trace;
+        const context = canvas.getContext("2d");
+        const width = (canvas.width = canvas.clientWidth);
+        const height = (canvas.height = 160);
+        const peak = EchoDsp.maxInRange(envelope, 0, envelope.length).value || 1;
+
+        context.clearRect(0, 0, width, height);
+        context.strokeStyle = "rgba(9, 255, 0, 0.75)";
+        context.beginPath();
+
+        const bucket = envelope.length / width;
+        for (let x = 0; x < width; x++) {
+            const start = Math.floor(x * bucket);
+            const highest = EchoDsp.maxInRange(envelope, start, Math.min(envelope.length, Math.floor(start + bucket))).value;
+            const y = height - (highest / peak) * (height - 8) - 4;
+            x === 0 ? context.moveTo(x, y) : context.lineTo(x, y);
+        }
+
+        context.stroke();
+        this.drawMarkers(context, detected, round, envelope.length, width, height);
+        return canvas;
+    },
+
+    drawMarkers(context, detected, round, envelopeLength, width, height) {
+        if (!detected) return null;
+
+        context.font = "11px 'Cascadia Code', monospace";
+
+        detected.peaks.forEach((peak, slot) => {
+            if (!peak) return;
+
+            const x = (peak.index / envelopeLength) * width;
+            const own = slot === round.ownSlot;
+            context.strokeStyle = own ? "#5fff5f" : "rgba(255, 255, 255, 0.55)";
+            context.fillStyle = context.strokeStyle;
+            context.beginPath();
+            context.moveTo(x, 0);
+            context.lineTo(x, height);
+            context.stroke();
+            context.fillText(own ? `self (${slot})` : `slot ${slot}`, x + 4, 14 + slot * 13);
+        });
+
+        return detected.peaks.length;
+    }
+};
+
+document.addEventListener("DOMContentLoaded", () => EchoPage.start());

JoshHeaps.Net/wwwroot/js/casino/holdem/addChips.js

@@ -1,92 +0,0 @@
-// "Add chips" — a rebuy, a top-up, or the first buy-in of the night.
-//
-// Quick amounts come off the table's starting stack, because a rebuy is almost
-// always one buy-in, sometimes half or two. The keypad is there for the times it
-// isn't. Recorded as cash in as well as chips, so at the end of the night the
-// dealer can say what each player actually handed over.
-const AddChips = {
-    state: null,
-    onConfirm: null,
-    seatIndex: null,
-    draft: "",
-
-    open(state, seatIndex, onConfirm) {
-        this.state = state;
-        this.seatIndex = seatIndex;
-        this.onConfirm = onConfirm;
-        this.draft = String(this.baseAmount());
-        this.render();
-        document.getElementById("addChipsOverlay").hidden = false;
-    },
-
-    close() {
-        document.getElementById("addChipsOverlay").hidden = true;
-    },
-
-    // The table's starting stack if there is one, otherwise something sane to nudge
-    // rather than an empty box.
-    baseAmount() {
-        const configured = Number(this.state.defaultStack);
-        if (!Number.isNaN(configured) && configured > 0) return configured;
-        const bb = Number(this.state.bigBlind) || 0;
-        return bb > 0 ? bb * 100 : 100;
-    },
-
-    quickAmounts() {
-        const base = this.baseAmount();
-        return [
-            { label: "½ buy-in", value: Money.round(base / 2) },
-            { label: "Buy-in", value: base },
-            { label: "2 buy-ins", value: base * 2 },
-        ];
-    },
-
-    render() {
-        const player = this.state.seats[this.seatIndex];
-        document.getElementById("addChipsTitle").textContent =
-            `Add chips — ${HoldemState.displayName(player, this.seatIndex)}`;
-
-        const stack = Betting.stackOf(this.state, player);
-        const boughtIn = Number(player.buyIns) || 0;
-        document.getElementById("addChipsSubtitle").textContent = boughtIn > 0
-            ? `${Money.format(stack)} in front · ${Money.format(boughtIn)} in so far`
-            : `${Money.format(stack)} in front`;
-
-        const quick = document.getElementById("addChipsQuick");
-        quick.innerHTML = "";
-        this.quickAmounts().forEach(option => {
-            const btn = document.createElement("button");
-            btn.type = "button";
-            btn.className = "addChipsQuickBtn";
-            btn.classList.toggle("selected", Number(this.draft) === option.value);
-
-            const label = document.createElement("span");
-            label.className = "addChipsQuickLabel";
-            label.textContent = option.label;
-            const amount = document.createElement("span");
-            amount.className = "addChipsQuickAmount";
-            amount.textContent = Money.format(option.value);
-
-            btn.appendChild(label);
-            btn.appendChild(amount);
-            btn.addEventListener("click", () => {
-                this.draft = String(option.value);
-                this.render();
-            });
-            quick.appendChild(btn);
-        });
-
-        const input = document.getElementById("addChipsInput");
-        input.value = this.draft;
-    },
-
-    confirm() {
-        const amount = Math.max(0, Number(document.getElementById("addChipsInput").value) || 0);
-        this.close();
-        if (amount > 0) this.onConfirm(this.seatIndex, Money.round(amount));
-    },
-};
-
-if (typeof module !== "undefined" && module.exports) {
-    module.exports = AddChips;
-}

JoshHeaps.Net/wwwroot/js/casino/holdem/betting.js

@@ -1,787 +0,0 @@
-// Live betting: who's to act, what it costs them, and where the money goes.
-//
-// This is bookkeeping, not a game — the dealer taps what the humans at the table
-// actually did, and the tool keeps the arithmetic straight. It deliberately never
-// blocks an action it thinks is "illegal"; a dealer overruling the maths is right
-// more often than the maths is.
-//
-// Money model: `player.committed` is what a seat has put in on the current street.
-// When a street closes it sweeps into `player.amountOverride`, which is the seat's
-// total for the hand — the same field the pot badge, the pot wizard, the standings
-// and the CSV already read. So the betting bar is a fast way to fill in a field
-// that already existed, and nothing downstream had to change.
-const Betting = {
-    STREETS: ["preflop", "flop", "turn", "river"],
-
-    streetLabel(street) {
-        return { preflop: "Pre-flop", flop: "Flop", turn: "Turn", river: "River" }[street] || "Pre-flop";
-    },
-
-    round(amount) {
-        return Money.round(amount);
-    },
-
-    // ---- Reading the table ----
-
-    liveSeats(state) {
-        return state.seats
-            .map((player, index) => ({ player, index }))
-            .filter(s => s.player.inHand && !s.player.folded);
-    },
-
-    // Who would post if the hand were dealt right now. Used to preview the blinds
-    // while the table is still being set, so a dealer can see where they'll land
-    // before any money moves.
-    // A seat that is dealt in, has nothing in the pot, and has no chips behind.
-    //
-    // Not the same as all-in: an all-in player has money riding on the hand. This is
-    // somebody who busted and hasn't bought back in yet, which a home game produces
-    // about once an hour. A seat with no stack *recorded* isn't broke either —
-    // stackOf falls back to the table's starting stack for those — only an explicit
-    // zero counts.
-    brokeSeats(state) {
-        const broke = [];
-        state.seats.forEach((player, index) => {
-            if (!player.inHand) return;
-            if (this.handTotal(player) > this.EPSILON_CHIPS) return;
-            if (this.stackOf(state, player) > this.EPSILON_CHIPS) return;
-            broke.push(index);
-        });
-        return broke;
-    },
-
-    // The table as it will be once the seats that can't post are dealt around. A view,
-    // not a change: the preview has to ask the same question the deal will answer, and
-    // asking it of a different shape of table is how the two came apart last time.
-    tableAsDealt(state) {
-        const broke = this.brokeSeats(state);
-        if (broke.length === 0) return state;
-        const skip = new Set(broke);
-        return {
-            ...state,
-            seats: state.seats.map((player, index) =>
-                skip.has(index) ? { ...player, inHand: false, folded: false } : player),
-        };
-    },
-
-    blindPreview(state) {
-        // Dealing relocates a button parked on an empty chair before it works out who
-        // posts, so the preview has to answer for the button where it *will* be. Asking
-        // from where it currently sits gave a different pair of blinds than the deal
-        // produced — the preview promising one thing and doing another is exactly the
-        // guessing this whole step exists to remove. Same reason the broke seats come
-        // out first: the preview once promised a small blind from a seat with no chips.
-        const dealt = this.tableAsDealt(state);
-        const buttonIndex = HoldemState.buttonSeatForDeal(dealt);
-        const asDealt = buttonIndex === dealt.dealerSeatIndex
-            ? dealt
-            : { ...dealt, dealerSeatIndex: buttonIndex };
-
-        const satOut = this.brokeSeats(state);
-        const { sbIndex, bbIndex, headsUp, manual, deadSmallBlind } = HoldemState.getBlindSeats(asDealt);
-        if (bbIndex === null) return null;
-        return {
-            sbIndex, bbIndex, headsUp, manual: !!manual, deadSmallBlind: !!deadSmallBlind,
-            deadButton: !!asDealt.deadButton && !asDealt.seats[buttonIndex].inHand,
-            // Asked of the table as it will be dealt, for the same reason the blinds
-            // are: someone sitting out for having no chips isn't owed a blind, and the
-            // big blind of the hand about to go out isn't either.
-            debtors: HoldemState.blindDebtors(asDealt, bbIndex),
-            posting: (state.postingIn || []).slice(),
-            buttonIndex,
-            buttonMoves: buttonIndex !== state.dealerSeatIndex,
-            satOut,
-            smallBlind: this.round(state.smallBlind || 0),
-            bigBlind: this.round(state.bigBlind || 0),
-            // What the straddles will be if the hand is dealt as it stands, and how
-            // many more this table could take.
-            straddles: this.straddleSeats(state),
-            maxStraddles: this.maxStraddles(state),
-        };
-    },
-
-    // ---- Straddles ----
-    //
-    // A straddle is a blind raise put out before the cards, by the player left of the
-    // big blind, for twice it. It buys the last word before the flop: everyone else
-    // acts first, and the straddler still has the option when it comes back round even
-    // if nobody raised. Re-straddles carry on left, each doubling again.
-    //
-    // Home games run them constantly and a dealer has to get three things right at
-    // once — the amount, who is first to act, and what the minimum raise becomes. The
-    // tool used to do none of them, so a dealer's only way through was to deal, have
-    // the straddler "raise" to $4, and hand the action to the wrong player.
-
-    // How many straddles this table could take. Everyone but the two blinds can put
-    // one out; heads-up that is nobody, which is the right answer — the button is
-    // already the small blind and there is no seat left of the big blind to straddle
-    // from.
-    maxStraddles(state) {
-        return Math.max(0, this.liveSeats(this.tableAsDealt(state)).length - 2);
-    },
-
-    // Who straddles and for how much, walking left from the big blind and doubling.
-    // Asked of the table as it will be dealt, so a seat about to be sat out for having
-    // no chips is never handed a straddle it can't post.
-    straddleSeats(state, count = state.straddleCount) {
-        const wanted = Math.min(Math.max(0, Number(count) || 0), this.maxStraddles(state));
-        if (wanted <= 0) return [];
-
-        const dealt = this.tableAsDealt(state);
-        const buttonIndex = HoldemState.buttonSeatForDeal(dealt);
-        const asDealt = buttonIndex === dealt.dealerSeatIndex
-            ? dealt
-            : { ...dealt, dealerSeatIndex: buttonIndex };
-        const { bbIndex } = HoldemState.getBlindSeats(asDealt);
-        if (bbIndex === null) return [];
-
-        const straddles = [];
-        let index = bbIndex;
-        let amount = this.round((Number(state.bigBlind) || 0) * 2);
-        for (let n = 0; n < wanted; n++) {
-            index = this.nextToAct(asDealt, index);
-            if (index === null || index === bbIndex) break;
-            straddles.push({ index, amount });
-            amount = this.round(amount * 2);
-        }
-        return straddles;
-    },
-
-    // Does handing this seat chips also put them back in the game?
-    //
-    // At a real table those are one event, and here they were two: a busted player got
-    // their chips and stayed sat out, silently skipped hand after hand until somebody
-    // noticed and found "Deal in" in the seat menu. Nothing said so — the toast just
-    // read "Ben added $100".
-    //
-    // Not for a seat that was sat out while *holding* chips. That's a dealer who sat
-    // somebody out on purpose and is topping them up, and dealing them back in would be
-    // the tool guessing at something it wasn't told. Only a seat with no stack of its
-    // own: busted at zero, or a chair being bought into for the first time.
-    //
-    // Deliberately reads player.stack rather than stackOf(), which substitutes the
-    // table's starting stack for a seat that has none — the question here is what this
-    // seat was actually recorded as holding.
-    buyInDealsThemIn(player) {
-        if (!player || player.inHand) return false;
-        const own = player.stack;
-        const recorded = own !== null && own !== undefined && String(own).trim() !== "";
-        return !recorded || Number(own) <= this.EPSILON_CHIPS;
-    },
-
-    // "bet" or "raise" — what putting more in is actually called right now.
-    //
-    // A wager into a pot nobody has wagered into is a bet; everything after that is a
-    // raise. The bar decided this from what the acting player still owes, which gets
-    // the big blind's option backwards: they owe nothing, so it offered "Bet", but
-    // their own blind is a live bet and putting more in is a raise. It gets the other
-    // half wrong too — the raise pad said "Raise to" for an opening bet on the flop,
-    // and wrote "Ann's raise to $10" into the undo control for it.
-    //
-    // The arithmetic was always right (minRaiseTo returns two big blinds for the big
-    // blind's option and one for an opening bet). This is only what it's called, which
-    // for a tool a dealer announces the action from is not a small thing.
-    wagerVerb(state) {
-        return (state.currentBet || 0) > this.EPSILON_CHIPS ? "raise" : "bet";
-    },
-
-    committed(player) {
-        return this.round(player.committed || 0);
-    },
-
-    // Everything this seat has put in across the whole hand, including the street
-    // still in progress.
-    handTotal(player) {
-        return this.round((Number(player.amountOverride) || 0) + this.committed(player));
-    },
-
-    // Never below zero. A seat can't have negative chips in front of it, and a typo in
-    // the stack field used to come back as-is — which then flowed into putIn(), where
-    // `Math.min(amount, -50)` moves a negative amount and *adds* chips to the table.
-    stackOf(state, player) {
-        const own = player.stack;
-        if (own !== null && own !== undefined && String(own).trim() !== "") {
-            return Math.max(0, this.round(own));
-        }
-        const fallback = Number(state.defaultStack);
-        return Number.isNaN(fallback) ? 0 : Math.max(0, this.round(fallback));
-    },
-
-    toCall(state, player) {
-        return Math.max(0, this.round((state.currentBet || 0) - this.committed(player)));
-    },
-
-    // A raise has to at least match the last one; before any raise, the big blind
-    // is the yardstick.
-    minRaiseTo(state) {
-        const increment = this.round(state.lastRaiseSize || state.bigBlind || 0);
-        return this.round((state.currentBet || 0) + (increment || 1));
-    },
-
-    potSoFar(state) {
-        return this.round(
-            state.seats.reduce((sum, p) => sum + this.handTotal(p), 0)
-        );
-    },
-
-    // ---- Moving the action ----
-
-    nextLiveIndex(state, fromIndex) {
-        const count = state.seatCount;
-        for (let step = 1; step <= count; step++) {
-            const index = this.seatAt(state, fromIndex, step);
-            const player = state.seats[index];
-            if (player.inHand && !player.folded) return index;
-        }
-        return null;
-    },
-
-    // Who the dealer asks next. A player who is all-in is still in the hand and still
-    // wins pots, but has no decision left, so the action passes over them.
-    nextToAct(state, fromIndex) {
-        const count = state.seatCount;
-        for (let step = 1; step <= count; step++) {
-            const index = this.seatAt(state, fromIndex, step);
-            const player = state.seats[index];
-            if (player.inHand && !player.folded && this.stackOf(state, player) > this.EPSILON_CHIPS) return index;
-        }
-        return null;
-    },
-
-    // A player still in the hand with chips in the pot and nothing left behind. This is
-    // the same stack test nextToAct uses to pass over them, which is the point: the
-    // seat the felt marks all-in is exactly the seat the dealer will never be asked to
-    // act on again.
-    //
-    // The "chips in the pot" half matters. A seat with an empty stack who hasn't put
-    // anything in is a busted player who shouldn't have been dealt in, not a player
-    // who moved all-in, and calling them all-in on the felt would be a lie.
-    isAllIn(state, player) {
-        if (!player || !player.inHand || player.folded) return false;
-        return this.handTotal(player) > this.EPSILON_CHIPS &&
-            this.stackOf(state, player) <= this.EPSILON_CHIPS;
-    },
-
-    // Which chair sits `step` places along in the direction of play. The table owns
-    // this — walking the seats is exactly where the button, the blinds and the action
-    // used to drift apart from each other, so there is one implementation of it.
-    seatAt(state, fromIndex, step) {
-        return HoldemState.nextSeatIndex(state, fromIndex, step);
-    },
-
-    // A street is done when everyone still live has either matched the bet or has
-    // no chips left to argue with, and everyone has had a turn since the last raise.
-    isStreetComplete(state) {
-        const live = this.liveSeats(state);
-        if (live.length <= 1) return true;
-
-        const unsettled = live.filter(s => {
-            const allIn = this.stackOf(state, s.player) <= 0;
-            const matched = this.toCall(state, s.player) <= 0;
-            return !allIn && (!matched || !s.player.hasActed);
-        });
-        return unsettled.length === 0;
-    },
-
-    // ---- Actions ----
-
-    // Moves `amount` from a seat's stack into the middle for this street. Returns
-    // what actually moved, which is less than asked for if it puts them all-in.
-    putIn(state, index, amount) {
-        const player = state.seats[index];
-        const stack = this.stackOf(state, player);
-        const moved = this.round(Math.min(Math.max(0, amount), stack));
-
-        player.stack = this.round(stack - moved);
-        player.committed = this.round(this.committed(player) + moved);
-        return moved;
-    },
-
-    fold(state, index) {
-        state.seats[index].folded = true;
-        state.seats[index].hasActed = true;
-        this.passAction(state, index);
-    },
-
-    check(state, index) {
-        state.seats[index].hasActed = true;
-        this.passAction(state, index);
-    },
-
-    call(state, index) {
-        const player = state.seats[index];
-        this.putIn(state, index, this.toCall(state, player));
-        player.hasActed = true;
-        this.passAction(state, index);
-    },
-
-    // `total` is what the seat's street commitment becomes — "raise to", the way a
-    // dealer says it out loud, not "raise by".
-    raiseTo(state, index, total) {
-        const player = state.seats[index];
-        const target = this.round(total);
-        const delta = this.round(target - this.committed(player));
-        const moved = this.putIn(state, index, delta);
-        const newBet = this.committed(player);
-        const previousBet = state.currentBet || 0;
-
-        if (newBet > previousBet) {
-            const increase = this.round(newBet - previousBet);
-            // Aggression, whether or not it was a full raise — a short all-in doesn't
-            // reopen the betting, but the player who made it is still the last one who
-            // put money in, and at the showdown they are still the one who shows first.
-            state.streetAggressorIndex = index;
-            state.handAggressorIndex = index;
-            // What a full raise would have had to be: at least as much again as the
-            // last one, or the big blind if there hasn't been a raise yet.
-            const fullRaise = this.round(state.lastRaiseSize || state.bigBlind || 0);
-            const isFullRaise = increase >= fullRaise - this.EPSILON_CHIPS;
-
-            state.currentBet = newBet;
-
-            if (isFullRaise) {
-                state.lastRaiseSize = increase;
-                // A real raise reopens the action: everyone else owes a response again.
-                state.seats.forEach((p, i) => {
-                    if (i !== index && p.inHand && !p.folded) p.hasActed = false;
-                });
-            }
-            // Otherwise this is a short all-in — somebody with less than a full raise
-            // left shoving it in. The most misread rule in poker: it does *not* reopen
-            // the betting to anyone who has already acted. They owe the difference or
-            // they fold; they don't get to raise again because a short stack happened
-            // to be between them. Players yet to act keep their full rights, which
-            // they do here because their hasActed is already false.
-            //
-            // lastRaiseSize deliberately isn't lowered either, or the next legal raise
-            // would be computed off the short amount and come out too small.
-        }
-
-        player.hasActed = true;
-        this.passAction(state, index);
-        return moved;
-    },
-
-    allIn(state, index) {
-        const player = state.seats[index];
-        return this.raiseTo(state, index, this.round(this.committed(player) + this.stackOf(state, player)));
-    },
-
-    passAction(state, index) {
-        state.actingSeatIndex = this.isStreetComplete(state) ? null : this.nextToAct(state, index);
-    },
-
-    // ---- Street and hand boundaries ----
-
-    // Pulls whatever is in front of the players into their hand totals. Anything that
-    // reads a seat's contribution — the pot wizard above all — has to run after this,
-    // or it will price the pot without the chips sitting on the current street.
-    sweepToHandTotals(state) {
-        state.seats.forEach(player => {
-            const moved = this.committed(player);
-            if (moved > 0) {
-                player.amountOverride = this.round((Number(player.amountOverride) || 0) + moved);
-            }
-            player.committed = 0;
-            player.hasActed = false;
-        });
-    },
-
-    // Sweeps the street's chips into each seat's hand total and opens the next one.
-    closeStreet(state) {
-        this.sweepToHandTotals(state);
-
-        state.currentBet = 0;
-        state.lastRaiseSize = 0;
-        // Whoever led this street stops being the answer the moment the next one opens.
-        // The hand's aggressor is deliberately left alone: it's the fallback for a
-        // river nobody could bet on.
-        state.streetAggressorIndex = null;
-
-        const nextStreetIndex = this.STREETS.indexOf(state.street || "preflop") + 1;
-        state.street = this.STREETS[nextStreetIndex] || "river";
-
-        // It takes two players with chips to have a bet. Once everyone left is all-in
-        // the rest of the board is just dealt out.
-        if (!this.canStillBet(state)) {
-            state.actingSeatIndex = null;
-            return;
-        }
-
-        // After the flop the first live player left of the button acts — which heads-up
-        // is the big blind, since the button is the small blind. Naming the big blind
-        // directly also covers a button parked on a seat nobody is sitting in, and it
-        // still has to be someone with chips left to bet.
-        const { bbIndex, headsUp } = HoldemState.getBlindSeats(state);
-        const bigBlindCanAct =
-            headsUp &&
-            bbIndex !== null &&
-            !state.seats[bbIndex].folded &&
-            this.stackOf(state, state.seats[bbIndex]) > this.EPSILON_CHIPS;
-
-        state.actingSeatIndex = bigBlindCanAct
-            ? bbIndex
-            : this.nextToAct(state, state.dealerSeatIndex);
-    },
-
-    isHandOver(state) {
-        return this.liveSeats(state).length <= 1;
-    },
-
-    // Players still in the hand who have chips left to put in. Fewer than two of them
-    // means the betting is finished even though the hand isn't.
-    seatsWithChips(state) {
-        return this.liveSeats(state).filter(s => this.stackOf(state, s.player) > this.EPSILON_CHIPS);
-    },
-
-    EPSILON_CHIPS: Money.EPSILON,
-
-    canStillBet(state) {
-        return this.liveSeats(state).length > 1 && this.seatsWithChips(state).length > 1;
-    },
-
-    // True when the hand is still live but nobody can bet again — the dealer is just
-    // running the board out.
-    isRunningOut(state) {
-        // Only while a hand is actually being played. Before the deal, a table of
-        // busted players who haven't rebought looks exactly like a table of all-ins to
-        // this test, and the bar was announcing a run-out over a felt with no cards and
-        // no chips on it.
-        if (!state.bettingOpen) return false;
-        return this.liveSeats(state).length > 1 && !this.canStillBet(state);
-    },
-
-    // True while nothing has happened in this hand except the blinds going in. Up to
-    // that point the dealer can still move the button or rename the blinds and have
-    // it cost nothing — which is the state a home game spends a lot of time in,
-    // arguing about whose turn it is before the cards come out.
-    onlyBlindsIn(state) {
-        return (state.street || "preflop") === "preflop" && state.seats.every(p => !p.hasActed);
-    },
-
-    // Are the blinds actually down? Moving the button or naming a blind means two
-    // completely different things depending on the answer, and `onlyBlindsIn` alone
-    // cannot tell them apart: a table sitting in setup, with no cards out and nothing
-    // committed, satisfies it just as well as a hand that has only just been dealt.
-    //
-    // With a hand open, the blinds are chips on the felt. Re-aiming them has to take
-    // those chips back and post them again from the new positions, or the badges and
-    // the money disagree.
-    //
-    // Before the deal it is a marker being slid round a table with nothing in the
-    // middle. Re-posting there would *deal the hand* — betting opened, blinds taken off
-    // two stacks, action on the seat after the big blind — which is not what a dealer
-    // means by "she's the big blind this one". Setting the positions is how a dealer
-    // gets ready to deal; the cards come out when they press the button, and not a
-    // moment before.
-    blindsArePosted(state) {
-        return !!state.bettingOpen && this.onlyBlindsIn(state);
-    },
-
-    // Chips the pot has been priced with but nobody has actually paid.
-    //
-    // Two ways a contribution gets into this tool. Tapping the action moves chips: the
-    // bet leaves the stack, sits in front of the player, and is swept into their hand
-    // total at the end of the street. The other way is the "without live betting" panel
-    // — a base pot amount, or chips counted out on a seat — where the dealer is
-    // recording a hand they are watching rather than driving, and nothing ever leaves
-    // anybody's stack.
-    //
-    // The pot wizard prices both the same way, and awarding it credits the winner. So
-    // in that second mode the table simply grew: measured at a three-handed table with
-    // a $50 base pot, paying the pot took the chips on the table from $600 to $750 and
-    // left the bank check blaming a rebuy that never happened.
-    //
-    // So before the pot is pushed, whatever was assumed rather than taken comes off the
-    // stacks that assumed it. Chips already committed or swept are left alone; they
-    // have been paid once already, and taking them twice is the same bug the other way
-    // round.
-    collectAssumedContributions(state) {
-        const taken = [];
-        state.seats.forEach((player, index) => {
-            const priced = HoldemState.computeContribution(player, state.chipLegend, state.basePotAmount);
-            const alreadyPaid = this.round(this.committed(player) + (Number(player.amountOverride) || 0));
-            const owed = this.round(priced - alreadyPaid);
-            if (owed <= this.EPSILON_CHIPS) return;
-
-            // Never more than they are holding. A seat priced above its own stack is a
-            // dealer's typo or a player who is short, and inventing the difference is
-            // what this whole function exists to stop.
-            const moved = this.round(Math.min(owed, this.stackOf(state, player)));
-            if (moved <= this.EPSILON_CHIPS) return;
-
-            player.stack = this.round(this.stackOf(state, player) - moved);
-            // Recorded where a swept bet lives, so the money is in exactly the place
-            // the rest of the tool looks for chips that are in the middle this hand.
-            player.amountOverride = this.round((Number(player.amountOverride) || 0) + moved);
-            taken.push({ index, name: HoldemState.displayName(player, index), amount: moved });
-        });
-        return { taken, total: this.round(taken.reduce((sum, row) => sum + row.amount, 0)) };
-    },
-
-    // A misdeal: the hand never happened, so every chip goes back where it came from.
-    //
-    // The rulings sheet in this tool has told dealers to redeal since the day it was
-    // written — first card to the wrong seat, a seat entitled to a hand dealt out, one
-    // of the first two cards exposed — and the tool had no way to do it. The only
-    // control that ended a live hand was Next Hand, which says out loud that it takes
-    // the money off the table without paying anybody. That is right for an abandoned
-    // pot and wrong for a misdeal, where the blinds and any calls belong to the people
-    // who put them in.
-    //
-    // Undo covers the first second of it — "↶ dealing the hand" is one tap — but only
-    // while the action history is still there. It lives in memory, so a dealer who
-    // refreshes the page mid-hand, or who is three calls in, has nothing.
-    //
-    // What is deliberately kept: the button, the blinds, the straddle and anyone
-    // posting in. A misdeal is the *same* hand dealt again, not the next one.
-    takeHandBack(state) {
-        const returned = [];
-        state.seats.forEach((player, index) => {
-            const back = this.round(this.committed(player) + (Number(player.amountOverride) || 0));
-            if (back > 0) {
-                player.stack = this.round(this.stackOf(state, player) + back);
-                returned.push({ index, name: HoldemState.displayName(player, index), amount: back });
-            }
-            player.committed = 0;
-            player.amountOverride = null;
-            player.hasActed = false;
-            player.folded = false;
-            player.cards = ["", ""];
-        });
-
-        state.bettingOpen = false;
-        state.street = "preflop";
-        state.currentBet = 0;
-        state.lastRaiseSize = 0;
-        state.actingSeatIndex = null;
-        state.streetAggressorIndex = null;
-        state.handAggressorIndex = null;
-        // Nothing was posted, as far as the next rotation is concerned: the hand this
-        // would have counted as is being dealt again from the same button.
-        state.postedBlinds = null;
-        state.postedStraddles = [];
-
-        return {
-            returned,
-            total: this.round(returned.reduce((sum, row) => sum + row.amount, 0)),
-        };
-    },
-
-    // Pulls the blinds back off the table and posts them again from wherever the
-    // button and the blind assignment now say they belong. Refunding first is what
-    // keeps the chip count straight when the button gets passed round three or four
-    // times before anybody is happy with it.
-    repostBlinds(state) {
-        state.seats.forEach(player => {
-            const back = this.committed(player);
-            if (back > 0) player.stack = this.round(this.stackOf(state, player) + back);
-            player.committed = 0;
-            player.hasActed = false;
-        });
-        this.beginHand(state);
-    },
-
-    // Deals a fresh betting round: blinds posted, action to the seat after the big
-    // blind, which is where a dealer expects to be looking when the cards go out.
-    //
-    // Called when the dealer says the table is ready, not automatically when the
-    // previous hand ends — everything before this point is setup, where seats and the
-    // button can move freely because no money has been committed.
-    beginHand(state) {
-        state.bettingOpen = true;
-        state.street = "preflop";
-        state.currentBet = 0;
-        state.lastRaiseSize = 0;
-        // Posting a blind isn't aggression — a hand limped and checked all the way
-        // down has no aggressor at all, which is exactly the case the showdown rule
-        // sends to the seat left of the button.
-        state.streetAggressorIndex = null;
-        state.handAggressorIndex = null;
-
-        // Deal around anyone with no chips, before anything else reads the table.
-        //
-        // A busted player who hasn't rebought used to be dealt in anyway, and the
-        // result was a hand nobody could finish: the table promised a small blind from
-        // a seat with nothing to post it with, took it from nobody, put the action on
-        // the big blind with only their own money in front of them, and announced
-        // "3 players — all-in, running out the board" before a card was dealt.
-        //
-        // Sitting them out is what a dealer does. Seat, name and buy-in record are
-        // untouched, so dealing them back in is one tap when they buy chips.
-        this.brokeSeats(state).forEach(index => {
-            state.seats[index].inHand = false;
-            state.seats[index].folded = false;
-        });
-
-        // Position is read off the button all through the hand, so it has to be on
-        // somebody before the blinds are worked out — not on the empty seat 1 a
-        // brand-new table starts on.
-        HoldemState.ensureButtonOnPlayer(state);
-
-        state.seats.forEach(player => {
-            player.committed = 0;
-            player.hasActed = false;
-        });
-
-        const sb = Number(state.smallBlind) || 0;
-        const bb = Number(state.bigBlind) || 0;
-        const { sbIndex, bbIndex, headsUp } = HoldemState.getBlindSeats(state);
-
-        // A null big blind means there aren't enough players to post at all. A null
-        // small blind with a big blind behind it is the dead small blind, which is a
-        // hand that gets dealt like any other — it just has one blind in it.
-        if (bbIndex === null) {
-            state.currentBet = 0;
-            state.actingSeatIndex = null;
-            state.postedBlinds = null;
-            state.postedStraddles = [];
-            return;
-        }
-
-        if (sb > 0 && sbIndex !== null) this.putIn(state, sbIndex, sb);
-        if (bb > 0) this.putIn(state, bbIndex, bb);
-
-        // Anyone the dealer said would post to come in past the blinds. It's a big
-        // blind like any other — it buys them a hand they'd otherwise have to wait for
-        // — so it goes in the middle the same way, before the count below reads it.
-        const posting = Array.isArray(state.postingIn) ? state.postingIn : [];
-        if (bb > 0) {
-            state.seats.forEach((player, index) => {
-                if (index === sbIndex || index === bbIndex) return;
-                if (player.inHand && posting.includes(player.id)) this.putIn(state, index, bb);
-            });
-        }
-        // Deliberately not cleared here. repostBlinds takes every posted chip back and
-        // deals again through this same function, so a post that cleared itself on the
-        // way in would be refunded and never retaken — the dealer moves the button and
-        // somebody's post quietly vanishes. startNextHand is what ends it.
-
-        // What the next hand's rotation is worked out from. Recorded here, where the
-        // blinds are actually posted, because by the time it's needed the seats have
-        // moved on and the answer can no longer be read off the table.
-        state.postedBlinds = { sbIndex, bbIndex };
-
-        // Who got cards. Read next hand to tell a player who has been here all along
-        // from one who has just walked up and had the blinds go past them.
-        state.dealtLastHand = state.seats.filter(p => p.inHand).map(p => p.id);
-
-        // Straddles go out after the blinds and before the cards, each one left of the
-        // last. Posted here rather than left to the dealer to fake as a raise, because
-        // a raise from that seat would hand the action to the wrong player.
-        const straddles = this.straddleSeats(state);
-        straddles.forEach(({ index, amount }) => this.putIn(state, index, amount));
-        state.postedStraddles = straddles.map(({ index }) => index);
-
-        state.currentBet = this.round(state.seats.reduce(
-            (most, player) => Math.max(most, this.committed(player)), 0));
-        // A straddle is a blind raise, so what has to be matched to raise again is the
-        // straddle itself, not the big blind underneath it: $2 blinds with a $4
-        // straddle make the next raise $8, the same way the $2 blind makes it $4.
-        // Left alone, the minimum would come out at $6 and the dealer would be talked
-        // out of it by every player at the table.
-        state.lastRaiseSize = straddles.length > 0 ? state.currentBet : (bb || 0);
-
-        // Heads-up the button is the small blind and acts first before the flop; with
-        // three or more it's the seat after the big blind. Either way, a blind big
-        // enough to put that player all-in leaves them nothing to decide.
-        //
-        // A straddle moves that seat along: first to act is left of the last straddler,
-        // and the straddler keeps the option, which falls out of nobody having acted
-        // yet.
-        const lastPosted = straddles.length > 0
-            ? straddles[straddles.length - 1].index
-            : bbIndex;
-        state.actingSeatIndex = headsUp
-            ? (this.stackOf(state, state.seats[sbIndex]) > this.EPSILON_CHIPS ? sbIndex : this.nextToAct(state, sbIndex))
-            : this.nextToAct(state, lastPosted);
-    },
-
-    // What a pot-sized raise actually is, as a "raise to" total.
-    //
-    // Not "the bet plus the pot as it stands". The raiser calls first, and their call
-    // is in the pot before the raise is measured off it, so the pot being matched is
-    // the one that exists after the call:
-    //
-    //     raise to = the current bet + (pot + what they owe) × fraction
-    //
-    // Pre-flop at 1/2 that gives $7, not $5: call the $2, which makes the pot $5, then
-    // raise $5. Leaving the call out understates every one of these, and players say
-    // "pot" out loud meaning a definite number.
-    //
-    // Facing no bet this is a plain pot-sized bet — toCall is zero and currentBet is
-    // zero, so it comes out as the pot, which is the right answer there too.
-    // Rounded up to something the table's chips can actually build. Half the pot is
-    // constantly a half-chip amount — pre-flop at 1/2 it is $4.50, and the smallest
-    // chip in the default legend is a dollar, so the button offered a number the
-    // dealer would have to round themselves every single time.
-    //
-    // Only when the legend describes this game. A smallest chip *larger* than the big
-    // blind means the denominations were never set for these stakes, and rounding a
-    // 5c/10c table up to whole dollars would be the tool doing real damage on the
-    // strength of a field somebody forgot to fill in. Left exact there, and the wrong
-    // legend stays visible rather than being quietly applied.
-    potRaiseTo(state, index, fraction = 1) {
-        const player = state.seats[index];
-        if (!player) return 0;
-        const potAfterCall = this.round(this.potSoFar(state) + this.toCall(state, player));
-        const exact = this.round((state.currentBet || 0) + potAfterCall * fraction);
-
-        const step = Money.fromCents(Money.chipStepCents(state.chipLegend));
-        const bigBlind = Number(state.bigBlind) || 0;
-        if (step <= 0 || (bigBlind > 0 && step > bigBlind)) return exact;
-        return Money.upToChip(exact, state.chipLegend);
-    },
-
-    // Who turns their hand over first.
-    //
-    // A call the dealer makes at every showdown that isn't a fold, and one nobody at
-    // the table volunteers for — everyone would rather see a hand than show one. The
-    // tool knew who last raised and who sits left of the button and said neither, so
-    // the dealer was working it out from memory while five people waited.
-    //
-    // Three cases, in the order the rule asks them:
-    //   * somebody bet or raised on the final round — they show first;
-    //   * the round was checked through — first live player left of the button;
-    //   * nobody could bet, because the chips were already in — the last player who
-    //     did put money in, on whichever round that was.
-    //
-    // Returns null when there's nothing to call: one player left, or none.
-    showdownOrder(state) {
-        const live = this.liveSeats(state);
-        if (live.length < 2) return null;
-
-        const seatOf = index =>
-            Number.isInteger(index) && live.some(s => s.index === index) ? index : null;
-
-        const streetAggressor = seatOf(state.streetAggressorIndex);
-        if (streetAggressor !== null) {
-            return { index: streetAggressor, reason: "aggressor" };
-        }
-
-        // Nobody could have bet this round, so "no bet on the final round" isn't a
-        // choice anybody made and the seat left of the button hasn't earned the
-        // obligation. It falls to whoever last put money in.
-        if (!this.canStillBet(state)) {
-            const handAggressor = seatOf(state.handAggressorIndex);
-            if (handAggressor !== null) return { index: handAggressor, reason: "allInAggressor" };
-        }
-
-        const order = HoldemState.liveOrderFromButton(state)
-            .filter(index => live.some(s => s.index === index));
-        return order.length > 0 ? { index: order[0], reason: "leftOfButton" } : null;
-    },
-
-    // Winners get their share put back in front of them.
-    creditWinnings(state, payouts) {
-        payouts.forEach(payout => {
-            const player = state.seats.find(p => p.id === payout.id);
-            if (!player) return;
-            player.stack = this.round(this.stackOf(state, player) + payout.amount);
-        });
-    },
-};
-
-if (typeof module !== "undefined" && module.exports) {
-    module.exports = Betting;
-}

JoshHeaps.Net/wwwroot/js/casino/holdem/cardPicker.js

@@ -1,131 +0,0 @@
-// Tap a card instead of typing it.
-//
-// Typing "AH" into a two-character box is fine at a desk and miserable at a table:
-// it needs a keyboard, it accepts nonsense like "ZZ", and it happily lets the same
-// card land in two players' hands. The picker is one tap per card, greys out cards
-// already dealt somewhere else at the table, and stores exactly the same two-character
-// string the rest of the tool has always read.
-const CardPicker = {
-    RANKS: ["A", "K", "Q", "J", "T", "9", "8", "7", "6", "5", "4", "3", "2"],
-    SUITS: [
-        { code: "S", symbol: "♠", red: false },
-        { code: "H", symbol: "♥", red: true },
-        { code: "D", symbol: "♦", red: true },
-        { code: "C", symbol: "♣", red: false },
-    ],
-
-    state: null,
-    hooks: null,
-    seatIndex: null,
-    cardIndex: 0,
-
-    open(state, hooks, seatIndex, cardIndex) {
-        this.state = state;
-        this.hooks = hooks;
-        this.seatIndex = seatIndex;
-        this.cardIndex = cardIndex;
-        this.render();
-        document.getElementById("cardPickerOverlay").hidden = false;
-    },
-
-    close() {
-        document.getElementById("cardPickerOverlay").hidden = true;
-    },
-
-    // Every card sitting in front of anyone else. The slot being edited is excluded,
-    // so re-picking the card that's already there isn't treated as a duplicate.
-    cardsInUse() {
-        const used = new Map();
-        this.state.seats.forEach((player, seat) => {
-            (player.cards || []).forEach((card, slot) => {
-                if (!card) return;
-                if (seat === this.seatIndex && slot === this.cardIndex) return;
-                used.set(card.toUpperCase(), HoldemState.displayName(player, seat));
-            });
-        });
-        return used;
-    },
-
-    assign(card) {
-        const player = this.state.seats[this.seatIndex];
-        player.cards[this.cardIndex] = card;
-        this.hooks.onPick(this.seatIndex, this.cardIndex, card);
-
-        // Straight on to the second card — a dealer picking hole cards is always
-        // picking two, and making them re-open the picker doubles the taps.
-        if (this.cardIndex === 0 && !player.cards[1]) {
-            this.cardIndex = 1;
-            this.render();
-            return;
-        }
-        this.close();
-    },
-
-    clearSlot() {
-        const player = this.state.seats[this.seatIndex];
-        player.cards[this.cardIndex] = "";
-        this.hooks.onPick(this.seatIndex, this.cardIndex, "");
-        this.render();
-    },
-
-    render() {
-        const player = this.state.seats[this.seatIndex];
-        const used = this.cardsInUse();
-
-        document.getElementById("cardPickerTitle").textContent =
-            `${HoldemState.displayName(player, this.seatIndex)} — card ${this.cardIndex + 1}`;
-
-        // Which slot the next tap fills, switchable without closing the sheet.
-        const slots = document.getElementById("cardPickerSlots");
-        slots.innerHTML = "";
-        [0, 1].forEach(slot => {
-            const btn = document.createElement("button");
-            btn.type = "button";
-            btn.className = "pickerSlot";
-            btn.classList.toggle("active", slot === this.cardIndex);
-            const value = player.cards[slot] || "";
-            btn.textContent = value || "—";
-            btn.classList.toggle("cardRed", /[HD]$/i.test(value));
-            btn.addEventListener("click", () => {
-                this.cardIndex = slot;
-                this.render();
-            });
-            slots.appendChild(btn);
-        });
-
-        const grid = document.getElementById("cardPickerGrid");
-        grid.innerHTML = "";
-        this.RANKS.forEach(rank => {
-            this.SUITS.forEach(suit => {
-                const card = `${rank}${suit.code}`;
-                const takenBy = used.get(card);
-
-                const btn = document.createElement("button");
-                btn.type = "button";
-                btn.className = "pickerCard";
-                btn.classList.toggle("cardRed", suit.red);
-                btn.disabled = !!takenBy;
-                if (takenBy) btn.title = `Already dealt to ${takenBy}`;
-                if ((player.cards[this.cardIndex] || "").toUpperCase() === card) {
-                    btn.classList.add("selected");
-                }
-
-                const rankEl = document.createElement("span");
-                rankEl.className = "pickerRank";
-                rankEl.textContent = rank;
-                const suitEl = document.createElement("span");
-                suitEl.className = "pickerSuit";
-                suitEl.textContent = suit.symbol;
-                btn.appendChild(rankEl);
-                btn.appendChild(suitEl);
-
-                btn.addEventListener("click", () => this.assign(card));
-                grid.appendChild(btn);
-            });
-        });
-    },
-};
-
-if (typeof module !== "undefined" && module.exports) {
-    module.exports = CardPicker;
-}

JoshHeaps.Net/wwwroot/js/casino/holdem/feedback.js

@@ -1,115 +0,0 @@
-// Toasts and confirmation dialogs, so the table never has to fall back on the
-// browser's own alert boxes. A system confirm() steals focus, looks nothing like
-// the rest of the page, and on a phone it's a full-screen interruption — all of
-// which is a bad trade for a dealer trying to keep a game moving.
-
-// A short-lived message at the bottom of the screen, optionally with one action
-// (in practice: Undo). Only one is ever on screen; a second replaces the first.
-const Toast = {
-    DEFAULT_DURATION_MS: 8000,
-    timer: null,
-
-    show(message, options = {}) {
-        const host = document.getElementById("toastHost");
-        if (!host) return;
-
-        this.dismiss();
-
-        const toast = document.createElement("div");
-        toast.className = "toast";
-        toast.setAttribute("role", "status");
-
-        const text = document.createElement("span");
-        text.className = "toastText";
-        text.textContent = message;
-        toast.appendChild(text);
-
-        if (options.actionLabel && options.onAction) {
-            const action = document.createElement("button");
-            action.type = "button";
-            action.className = "toastAction";
-            action.textContent = options.actionLabel;
-            action.addEventListener("click", () => {
-                this.dismiss();
-                options.onAction();
-            });
-            toast.appendChild(action);
-        }
-
-        const close = document.createElement("button");
-        close.type = "button";
-        close.className = "toastClose";
-        close.setAttribute("aria-label", "Dismiss");
-        close.textContent = "✕";
-        close.addEventListener("click", () => this.dismiss());
-        toast.appendChild(close);
-
-        host.appendChild(toast);
-        // Next frame, so the entrance transition actually runs.
-        requestAnimationFrame(() => toast.classList.add("toastVisible"));
-
-        this.timer = setTimeout(
-            () => this.dismiss(),
-            options.duration || this.DEFAULT_DURATION_MS
-        );
-    },
-
-    dismiss() {
-        if (this.timer) {
-            clearTimeout(this.timer);
-            this.timer = null;
-        }
-        const host = document.getElementById("toastHost");
-        if (host) host.innerHTML = "";
-    },
-};
-
-// Styled stand-in for confirm(). Resolves true if the dealer goes through with it.
-const Dialog = {
-    confirm({ title, message, confirmLabel = "Confirm", cancelLabel = "Cancel", danger = false }) {
-        return new Promise(resolve => {
-            const overlay = document.getElementById("confirmOverlay");
-            const modal = overlay.querySelector("#confirmModal");
-            overlay.querySelector("#confirmTitle").textContent = title;
-            overlay.querySelector("#confirmMessage").textContent = message;
-
-            const confirmBtn = overlay.querySelector("#confirmAcceptBtn");
-            const cancelBtn = overlay.querySelector("#confirmCancelBtn");
-            confirmBtn.textContent = confirmLabel;
-            cancelBtn.textContent = cancelLabel;
-            confirmBtn.classList.toggle("holdemBtnDanger", danger);
-            confirmBtn.classList.toggle("holdemBtnAccent", !danger);
-
-            const finish = result => {
-                overlay.hidden = true;
-                confirmBtn.removeEventListener("click", onAccept);
-                cancelBtn.removeEventListener("click", onCancel);
-                overlay.removeEventListener("click", onBackdrop);
-                document.removeEventListener("keydown", onKey);
-                resolve(result);
-            };
-            const onAccept = () => finish(true);
-            const onCancel = () => finish(false);
-            const onBackdrop = e => {
-                if (e.target === overlay) finish(false);
-            };
-            const onKey = e => {
-                if (e.key === "Escape") finish(false);
-                if (e.key === "Enter") finish(true);
-            };
-
-            confirmBtn.addEventListener("click", onAccept);
-            cancelBtn.addEventListener("click", onCancel);
-            overlay.addEventListener("click", onBackdrop);
-            document.addEventListener("keydown", onKey);
-
-            overlay.hidden = false;
-            modal.focus();
-            confirmBtn.focus();
-        });
-    },
-};
-
-if (typeof module !== "undefined" && module.exports) {
-    module.exports = { Toast, Dialog };
-}

JoshHeaps.Net/wwwroot/js/casino/holdem/handHistoryExport.js

@@ -1,130 +0,0 @@
-// Turns the in-memory hand history into a CSV file the dealer can download for a
-// paper trail — a house manager or a disputed chip count needs something that
-// outlives the browser tab, not just a scrollable panel in the sidebar.
-const HandHistoryExport = {
-    csvField(value) {
-        const str = String(value ?? "");
-        return /[",\n]/.test(str) ? `"${str.replace(/"/g, '""')}"` : str;
-    },
-
-    formatTimestamp(timestamp) {
-        try {
-            return new Date(timestamp).toLocaleString();
-        } catch {
-            return "";
-        }
-    },
-
-    // Money columns go in as bare numbers. Written as "$1,250,000.00" they import as
-    // text, so the one thing anybody opens this file to do — total a column and see
-    // who owes what — doesn't work without cleaning every cell first. The commas were
-    // quoted correctly, so the file parsed; it just wouldn't add up.
-    toCsv(handHistory, standings = [], { notes = "" } = {}) {
-        // The rake gets its own column rather than being folded into the pot: the two
-        // numbers answer different questions — what was in the middle, and what the
-        // house took out of it — and a night's worth of the second one is what the box
-        // is counted against.
-        const rows = [["Hand #", "Time", "Pot", "House take", "Payouts"]];
-        // handHistory is stored newest-first; the export reads better oldest-first.
-        [...handHistory].reverse().forEach(entry => {
-            const payouts = (entry.payouts || [])
-                .map(p => `${p.label}: ${Money.format(p.amount)}`)
-                .join("; ");
-            rows.push([
-                entry.handNumber,
-                this.formatTimestamp(entry.timestamp),
-                Money.forSheet(entry.pot),
-                Money.forSheet(entry.rake || 0),
-                payouts,
-            ]);
-        });
-
-        // The settle-up numbers go in the same file as the hands they came from, so a
-        // dealer handing over one export isn't asked for a second one at cash-out.
-        if (standings.length > 0) {
-            rows.push([]);
-            rows.push(["Session Standings"]);
-            // Bought in and chips now are what a cash-out is settled from; paid in and
-            // won describe the hands. Both belong in the file the dealer hands over.
-            //
-            // Notes go last so the money columns keep the shape a spreadsheet expects.
-            // "IOU: $20 to Ann" is exactly the kind of thing that has to be in the file
-            // somebody settles up from, and it was only ever visible inside that seat's
-            // own editor.
-            rows.push(["Player", "Paid In", "Won", "Net", "Bought In", "Chips Now", "Up/Down", "Notes"]);
-            standings.forEach(row => {
-                rows.push([
-                    // Somebody who has gone home is marked in the file the same way the
-                    // panel marks them, because this is the copy that gets read at the
-                    // end of the night when nobody remembers who has already been paid.
-                    row.cashedOut ? `${row.name} (paid out)` : row.name,
-                    Money.forSheet(row.in),
-                    Money.forSheet(row.won),
-                    Money.forSheet(row.net),
-                    Money.forSheet(row.boughtIn || 0),
-                    Money.forSheet(row.chipsNow || 0),
-                    Money.forSheet(row.cashPosition || 0),
-                    row.notes || "",
-                ]);
-            });
-
-            // And the answer the standings are read to get to. Whoever opens this file
-            // wants the payment list, not to redo the arithmetic in a spreadsheet.
-            const plan = SettleUp.plan(standings);
-            if (plan.payments.length > 0) {
-                rows.push([]);
-                rows.push(["Settle Up"]);
-                rows.push(["Pays", "Receives", "Amount"]);
-                plan.payments.forEach(payment => {
-                    rows.push([payment.from, payment.to, Money.forSheet(payment.amount)]);
-                });
-                if (!plan.balanced) {
-                    // The file is the paper trail, so the caveat travels with it rather
-                    // than living only in a sidebar nobody exported.
-                    rows.push([
-                        plan.shortBy > 0
-                            ? `Unpaid: ${Money.forSheet(plan.shortBy)} — more chips in play than cash taken`
-                            : `Unclaimed: ${Money.forSheet(plan.overBy)} — more cash taken than chips in play`,
-                    ]);
-                }
-            }
-        }
-
-        // The table's own notes — side bets, IOUs, the promo running until midnight.
-        // The dealer typed them because they matter to the night, and the export is the
-        // thing that outlives the browser tab; leaving them behind meant the one place
-        // the context was written down was the one place it couldn't be handed over.
-        // csvField quotes the line breaks, so a multi-line note survives as one cell.
-        if (notes && notes.trim()) {
-            rows.push([]);
-            rows.push(["Table Notes"]);
-            rows.push([notes.trim()]);
-        }
-
-        return rows.map(row => row.map(f => this.csvField(f)).join(",")).join("\r\n");
-    },
-
-    fileName() {
-        const now = new Date();
-        const pad = n => String(n).padStart(2, "0");
-        const stamp = `${now.getFullYear()}-${pad(now.getMonth() + 1)}-${pad(now.getDate())}-${pad(now.getHours())}${pad(now.getMinutes())}`;
-        return `holdem-hand-history-${stamp}.csv`;
-    },
-
-    download(handHistory, standings = [], options = {}) {
-        const csv = this.toCsv(handHistory, standings, options);
-        const blob = new Blob([csv], { type: "text/csv;charset=utf-8;" });
-        const url = URL.createObjectURL(blob);
-        const link = document.createElement("a");
-        link.href = url;
-        link.download = this.fileName();
-        document.body.appendChild(link);
-        link.click();
-        document.body.removeChild(link);
-        URL.revokeObjectURL(url);
-    },
-};
-
-if (typeof module !== "undefined" && module.exports) {
-    module.exports = HandHistoryExport;
-}

JoshHeaps.Net/wwwroot/js/casino/holdem/main.js

@@ -1,850 +0,0 @@
-document.addEventListener("DOMContentLoaded", () => {
-    const state = HoldemState.load();
-
-    // Focus, Tab-trapping and Escape for every overlay, wired once by watching the
-    // `hidden` attribute they all already toggle.
-    Modal.mount();
-
-    // Undo works by swapping the whole table back to a snapshot. `state` is handed out
-    // by reference to every module at mount time, so it has to be refilled in place —
-    // reassigning the variable would leave the renderer and the betting bar pointing at
-    // the old object and quietly ignoring the undo.
-    const snapshotState = () => JSON.parse(JSON.stringify(state));
-
-    const restoreState = snapshot => {
-        Object.keys(state).forEach(key => delete state[key]);
-        Object.assign(state, snapshot);
-        HoldemState.save(state);
-        Render.renderAll();
-    };
-
-    // A gesture on a seat is a shortcut for something the dealer could do the long
-    // way, so each one is undoable the same way the header buttons are.
-    const seatAction = (index, message, mutate) => {
-        const snapshot = snapshotState();
-        mutate(state.seats[index], index);
-        HoldemState.save(state);
-        Render.renderAll();
-
-        Toast.show(message, {
-            actionLabel: "Undo",
-            onAction: () => {
-                restoreState(snapshot);
-                Toast.show("Undone.", { duration: 2500 });
-            },
-            duration: 6000,
-        });
-    };
-
-    const nameOf = index => HoldemState.displayName(state.seats[index], index);
-
-    const hooks = {
-        save: s => HoldemState.save(s),
-        rerender: () => Render.renderAll(),
-
-        onSeatDoubleTap: index => {
-            const player = state.seats[index];
-            if (!player.inHand) return;
-            if (player.folded) {
-                seatAction(index, `${nameOf(index)} is back in the hand.`, p => { p.folded = false; });
-                return;
-            }
-            seatAction(index, `${nameOf(index)} folds.`, () => {
-                if (state.actingSeatIndex === index) Betting.fold(state, index);
-                else player.folded = true;
-            });
-        },
-
-        onSeatLongPress: index => SeatMenu.open(state, seatMenuHooks, index),
-
-        // The waiting list, from the Session panel and from an empty chair's menu.
-        // The state change goes inside runUndoable, not before it: the snapshot is
-        // taken as the first thing that happens, so anything done ahead of it is
-        // already baked into what Undo would restore.
-        seatWaiting: (id, index) => {
-            const entry = (state.waitingList || []).find(row => row.id === id);
-            const seat = state.seats[index];
-            if (!entry || !seat) {
-                Toast.show("They aren't on the list any more.", { duration: 3000 });
-                hooks.rerender();
-                return;
-            }
-            const occupied = HoldemState.seatInPlay(seat);
-            if (occupied) {
-                Toast.show(`${HoldemState.displayName(seat, index)} is already in that seat.`, { duration: 3500 });
-                hooks.rerender();
-                return;
-            }
-            runUndoable(`${entry.name} takes seat ${index + 1}. Add their chips when they buy in.`,
-                () => HoldemState.seatFromWaitingList(state, id, index));
-        },
-
-        dropWaiting: id => {
-            const entry = (state.waitingList || []).find(row => row.id === id);
-            if (!entry) return;
-            runUndoable(`${entry.name} taken off the waiting list.`,
-                () => HoldemState.removeFromWaitingList(state, id));
-        },
-        onGiveButton: index => seatMenuHooks.makeDealer(index),
-    };
-
-    const seatMenuHooks = {
-        fold: index => hooks.onSeatDoubleTap(index),
-        unfold: index => seatAction(index, `${nameOf(index)} is back in the hand.`, p => { p.folded = false; }),
-        allIn: index => seatAction(index, `${nameOf(index)} is all-in.`, () => Betting.allIn(state, index)),
-        toggleDealtIn: index => {
-            const player = state.seats[index];
-            const dealtIn = player.inHand;
-            const handRunning = !Betting.onlyBlindsIn(state) || Betting.potSoFar(state) > 0;
-            const alreadyIn = Betting.handTotal(player);
-
-            // Somebody walking away mid-hand doesn't get their chips back — they're
-            // dead money the winner collects. Say so, because the pot total pointedly
-            // does not go down and a dealer needs to know that's deliberate.
-            const message = dealtIn
-                ? (alreadyIn > 0
-                    ? `${nameOf(index)} is out — their ${Money.format(alreadyIn)} stays in the pot.`
-                    : `${nameOf(index)} sits out.`)
-                : (handRunning
-                    ? `${nameOf(index)} is in from the next hand.`
-                    : `${nameOf(index)} is dealt in.`);
-
-            seatAction(index, message, p => {
-                p.inHand = !dealtIn;
-                if (!p.inHand) {
-                    // Their chips stay put; only the fold flag is cleared, since being
-                    // out of the hand already covers not winning it.
-                    p.folded = false;
-                    if (state.actingSeatIndex === index) Betting.passAction(state, index);
-                } else if (handRunning) {
-                    // Joining a hand already in progress means sitting this one out —
-                    // you can't buy into a pot you haven't been paying for. `folded`
-                    // is exactly that state, and the next hand clears it.
-                    p.folded = true;
-                }
-            });
-        },
-
-        // Somebody is done for the night. The dealer counts their chips out, the chair
-        // opens, and both halves of what happened stay on the record — the cash the box
-        // took from them, and the chips it handed back. Wiping the seat by hand did
-        // neither: it left the bank check declaring their whole stack missing for the
-        // rest of the night.
-        cashOut: async index => {
-            const allowed = HoldemState.canCashOut(state, index);
-            if (!allowed.ok) {
-                Toast.show(allowed.reason, { duration: 4000 });
-                return;
-            }
-
-            const preview = HoldemState.cashOutPreview(state, index);
-            const result = preview.net === 0
-                ? "even for the night"
-                : preview.net > 0
-                    ? `up ${Money.format(preview.net)}`
-                    : `down ${Money.format(Math.abs(preview.net))}`;
-            const chips = preview.breakdown ? ` — ${preview.breakdown}` : "";
-
-            const ok = await Dialog.confirm({
-                title: `Cash out ${preview.name}?`,
-                message: `Count out ${Money.format(preview.chips)}${chips}. They bought in for ` +
-                    `${Money.format(preview.boughtIn)}, so they leave ${result}. The chair opens up, and the ` +
-                    `night's record keeps both their buy-in and this payout so the bank still balances.`,
-                confirmLabel: `Pay ${Money.format(preview.chips)}`,
-            });
-            if (!ok) return;
-
-            runUndoable(`${preview.name} cashed out for ${Money.format(preview.chips)}.`,
-                () => HoldemState.cashOut(state, index));
-        },
-
-        // Two players change chairs. Undoable like every other seat action, because a
-        // swap is easy to aim wrong and the seats look alike at a glance.
-        swapSeats: (from, to) => {
-            const movedName = nameOf(from);
-            const intoName = nameOf(to);
-            const wasEmpty = Render.isEmptySeat(state.seats[to]);
-            runUndoable(
-                wasEmpty
-                    ? `${movedName} moved to seat ${to + 1}.`
-                    : `${movedName} and ${intoName} changed seats.`,
-                () => HoldemState.swapSeats(state, from, to));
-        },
-
-        makeDealer: index => {
-            // Before the deal there's nothing posted, so this is just moving a marker.
-            // After it, the blinds have to follow the button or the badges and the
-            // money disagree — but that's a real thing happening to real chips, and
-            // the dealer gets told rather than finding out later.
-            const willRepost = Betting.blindsArePosted(state);
-
-            seatAction(index, willRepost
-                ? `Button on ${nameOf(index)} — blinds taken back and re-posted.`
-                : `Button on ${nameOf(index)}.`, () => {
-                state.dealerSeatIndex = index;
-                // Putting the button somewhere by hand is the dealer overruling the
-                // rotation, dead positions included. Leaving them set would hold a
-                // small blind dead at a table whose button has moved out from under it.
-                state.deadButton = false;
-                state.deadSmallBlind = false;
-                if (willRepost) Betting.repostBlinds(state);
-            });
-        },
-
-        assignBlind: (index, which) => {
-            const blinds = HoldemState.getBlindSeats(state);
-            const other = which === "sb" ? blinds.bbIndex : blinds.sbIndex;
-            // Naming one blind pins the other where it already is, so the dealer only
-            // has to state the part they're changing. If that would land both on one
-            // player, the other blind moves to the next seat along.
-            let partner = other !== null && other !== undefined && other !== index
-                ? other
-                : Betting.nextLiveIndex(state, index);
-            if (partner === index || partner === null) partner = Betting.nextLiveIndex(state, index);
-
-            const label = which === "sb" ? "small blind" : "big blind";
-            // Only a hand that is already open has blinds to move. Before the deal this
-            // is aiming the next hand, and re-posting would have dealt it — the dealer
-            // says who the blind is well before they say "cards".
-            const posted = Betting.blindsArePosted(state);
-            seatAction(index, posted
-                ? `${nameOf(index)} posts the ${label}.`
-                : `${nameOf(index)} has the ${label} next hand.`, () => {
-                state.blindOverride = which === "sb"
-                    ? { sbIndex: index, bbIndex: partner }
-                    : { sbIndex: partner, bbIndex: index };
-                if (posted) Betting.repostBlinds(state);
-            });
-        },
-
-        clearBlindOverride: () => {
-            const posted = Betting.blindsArePosted(state);
-            seatAction(state.dealerSeatIndex, posted
-                ? "Blinds follow the button again — taken back and re-posted."
-                : "Blinds follow the button again.", () => {
-                state.blindOverride = null;
-                if (posted) Betting.repostBlinds(state);
-            });
-        },
-
-        editSeat: index => Render.toggleSeatEditor(index),
-
-        addChips: index => AddChips.open(state, index, (seatIndex, amount) => {
-            // Buying chips puts you back in the game — see Betting.buyInDealsThemIn.
-            const dealBackIn = Betting.buyInDealsThemIn(state.seats[seatIndex]);
-            const handRunning = !Betting.onlyBlindsIn(state) || Betting.potSoFar(state) > 0;
-
-            const message = `${nameOf(seatIndex)} added ${Money.format(amount)}` +
-                (dealBackIn
-                    ? handRunning ? " — in from the next hand." : " — dealt in."
-                    : ".");
-
-            seatAction(seatIndex, message, p => {
-                // Chips in front and cash in are different questions — the stack moves
-                // every hand, what they've handed over only moves when they buy.
-                p.stack = Money.round(Betting.stackOf(state, p) + amount);
-                p.buyIns = Money.round((Number(p.buyIns) || 0) + amount);
-
-                if (dealBackIn) {
-                    p.inHand = true;
-                    // Same rule "Deal in" follows: you can't buy into a pot you haven't
-                    // been paying for, and `folded` is exactly that state for one hand.
-                    p.folded = handRunning;
-                }
-            });
-        }),
-    };
-
-    Render.mount(state, hooks);
-
-    const openPotWizard = () => {
-        // Chips still in front of players belong in the pot being priced, so bank them
-        // before the wizard reads anyone's contribution.
-        Betting.sweepToHandTotals(state);
-        hooks.save(state);
-        Render.renderAll();
-
-        PotWizard.open(state, (payouts, { rake = 0 } = {}) => {
-            const paid = payouts.map(p => `${p.label} ${Money.format(p.amount)}`).join(", ");
-            const withRake = rake > 0 ? `${paid}, house ${Money.format(rake)}` : paid;
-            runUndoable(withRake ? `Paid ${withRake}.` : "Hand closed with nothing to pay out.", () => {
-                if (rake > 0) {
-                    state.rakeTaken = Money.round((Number(state.rakeTaken) || 0) + rake);
-                }
-                // Anything the pot was priced with but nobody actually paid — the
-                // base pot and counted chips of the no-live-betting flow — comes off
-                // the stacks that owe it before the winner is paid. Otherwise the
-                // table gains the whole pot out of nowhere.
-                Betting.collectAssumedContributions(state);
-                if (payouts.length > 0) {
-                    HoldemState.recordHand(state, payouts, rake);
-                    // Winnings go straight back in front of the player, so the next
-                    // hand's stacks are already right.
-                    Betting.creditWinnings(state, payouts);
-                }
-                // Settling a pot ends the hand; it doesn't start the next one. The
-                // table goes back to setup so people can sit down or cash out before
-                // any blinds are committed.
-                HoldemState.startNextHand(state);
-            });
-        });
-    };
-
-    // A short history of actions taken from the bar, so a misclicked Fold can be taken
-    // back — and the one before it, since a dealer usually notices a beat late. Kept in
-    // memory only: this is for the mistake you just made, not last night's hand.
-    const MAX_UNDO_STEPS = 12;
-    const actionHistory = [];
-
-    ActionBar.mount(state, {
-        save: hooks.save,
-        rerender: hooks.rerender,
-        resolvePot: openPotWizard,
-
-        beginAction: label => {
-            actionHistory.push({ label, snapshot: snapshotState() });
-            if (actionHistory.length > MAX_UNDO_STEPS) actionHistory.shift();
-        },
-
-        lastActionLabel: () => (actionHistory.length ? actionHistory[actionHistory.length - 1].label : null),
-
-        undoLast: () => {
-            const step = actionHistory.pop();
-            if (!step) return;
-            restoreState(step.snapshot);
-            Toast.show(`Took back ${step.label}.`, { duration: 2500 });
-        },
-    });
-
-    // Anything that ends the hand makes the per-action history meaningless — the
-    // snapshots refer to a hand that no longer exists.
-    const clearActionHistory = () => { actionHistory.length = 0; };
-
-    // Keyboard shortcuts press the very same buttons a dealer would tap, rather than
-    // calling the betting engine themselves — there's no second code path to drift out
-    // of step with what the bar is actually offering right now.
-    const pressInBar = selector => {
-        const btn = document.querySelector(`#actionBar ${selector}`);
-        if (!btn || btn.disabled) return false;
-        btn.click();
-        return true;
-    };
-
-    const quickRaiseButton = label =>
-        [...document.querySelectorAll("#actionBar .raiseQuickBtn")]
-            .find(b => b.querySelector(".actionBtnLabel").textContent === label);
-
-    Shortcuts.mount({
-        fold: () => pressInBar(".actionFold"),
-        checkOrCall: () => pressInBar(".actionCheck") || pressInBar(".actionCall"),
-        raise: () => pressInBar(".actionRaise"),
-        allIn: () => {
-            // Open the raise pad first if it isn't already, then take its All-in amount.
-            if (!document.querySelector("#actionBar .raisePad") && !pressInBar(".actionRaise")) return false;
-            const quick = quickRaiseButton("All-in");
-            if (!quick) return false;
-            quick.click();
-            return true;
-        },
-        // Enter confirms a raise if one is being entered, otherwise moves the hand on.
-        // Dealing is an advance too — Enter should carry a dealer through setup, deal,
-        // streets and showdown without reaching for the trackpad.
-        advance: () => pressInBar(".raiseConfirm") || pressInBar(".actionAdvance") || pressInBar(".actionDeal"),
-        undo: () => pressInBar(".actionUndo"),
-        cancel: () => pressInBar(".raiseCancel"),
-    });
-
-    // Moving to the next hand used to ask "are you sure?" every single time —
-    // the most-pressed button in a session, gated behind a system dialog. It now
-    // just happens, and the toast offers the way back for the few seconds anyone
-    // would notice a misclick. The snapshot is deliberately in-memory only: an
-    // undo is for the mistake you just made, not one from last night's session.
-    const runUndoable = (message, mutate) => {
-        const snapshot = snapshotState();
-        mutate();
-        // Starting or settling a hand invalidates the per-action history: those
-        // snapshots describe a hand that's over. The whole-step Undo below replaces it.
-        clearActionHistory();
-        hooks.save(state);
-        Render.renderAll();
-
-        Toast.show(message, {
-            actionLabel: "Undo",
-            onAction: () => {
-                restoreState(snapshot);
-                Toast.show("Undone.", { duration: 2500 });
-            },
-        });
-    };
-
-    // A seat that has anything of a player in it — a name, chips, cash in, or a hand
-    // in progress. Shrinking the table throws these away permanently, and it also
-    // orphans them in the session standings, where they keep their winnings but lose
-    // the stack and buy-in the settle-up is worked out from.
-    // One question, asked in one place. This predicate existed here, in the seat menu,
-    // in the action bar and twice in the state module, in four slightly different
-    // spellings — and a chair that counts as occupied for the waiting list but empty
-    // for the seat count is how somebody's chips get thrown away.
-    const seatHasSomeoneIn = player => HoldemState.seatInPlay(player);
-
-    document.getElementById("seatCountInput").addEventListener("change", async e => {
-        const requested = Math.max(2, Math.min(24, Math.floor(Number(e.target.value)) || state.seatCount));
-        const losing = state.seats.slice(requested).filter(seatHasSomeoneIn);
-
-        if (losing.length > 0) {
-            const who = losing
-                .map((p, i) => HoldemState.displayName(p, requested + state.seats.slice(requested).indexOf(p)))
-                .join(", ");
-            const ok = await Dialog.confirm({
-                title: `Remove ${losing.length} ${losing.length === 1 ? "player" : "players"}?`,
-                message: `Going down to ${requested} seats takes ${who} off the table along with their chips and buy-ins, and their session totals stop adding up.`,
-                confirmLabel: "Remove them",
-                danger: true,
-            });
-            if (!ok) {
-                e.target.value = state.seatCount;
-                return;
-            }
-        }
-
-        runUndoable(`Table set to ${requested} seats.`, () => HoldemState.resizeSeats(state, requested));
-    });
-
-    document.getElementById("directionSelect").addEventListener("change", e => {
-        state.direction = e.target.value;
-        hooks.save(state);
-        Render.renderSeats();
-    });
-
-    document.getElementById("basePotInput").addEventListener("input", e => {
-        state.basePotAmount = e.target.value === "" ? null : Number(e.target.value);
-        hooks.save(state);
-        Render.renderAll();
-    });
-
-    document.getElementById("dedicatedDealerToggle").addEventListener("change", e => {
-        state.dedicatedDealer = e.target.checked;
-        hooks.save(state);
-        Render.renderSeats();
-        Render.renderTableHint();
-    });
-
-    document.getElementById("tableNotes").addEventListener("input", e => {
-        state.notes = e.target.value;
-        hooks.save(state);
-    });
-
-    document.getElementById("addChipColorBtn").addEventListener("click", () => {
-        state.chipLegend.push({
-            id: HoldemState.makeId("chip"),
-            color: "#888888",
-            value: 1,
-        });
-        hooks.save(state);
-        Render.renderAll();
-    });
-
-    // A misdeal. Everything in the middle goes back to whoever put it there, and the
-    // same button deals the same hand again.
-    // The seats holding the table's starting stack, written down as cash taken.
-    document.getElementById("bankRecordBuyInsBtn").addEventListener("click", async () => {
-        const starting = HoldemState.seatsOwingCash(state).filter(row => row.fromStartingStack);
-        if (starting.length === 0) return;
-        const total = Money.round(starting.reduce((sum, row) => sum + row.chips, 0));
-
-        const ok = await Dialog.confirm({
-            title: `Write down ${Money.format(total)} taken?`,
-            message: `${starting.map(row => `${row.name} ${Money.format(row.chips)}`).join(", ")} — the starting stack ` +
-                `each of them is playing with. Only do this if the cash is actually in the box.`,
-            confirmLabel: "Write it down",
-        });
-        if (!ok) return;
-
-        runUndoable(`${Money.format(total)} recorded from ${starting.length} ${starting.length === 1 ? "player" : "players"}.`,
-            () => HoldemState.recordStartingBuyIns(state));
-    });
-
-    document.getElementById("waitingListForm").addEventListener("submit", e => {
-        e.preventDefault();
-        const field = document.getElementById("waitingNameInput");
-        const name = field.value.trim();
-        if (!name) return;
-        field.value = "";
-        runUndoable(`${name} added to the waiting list.`, () => HoldemState.addToWaitingList(state, name));
-        field.focus();
-    });
-
-    document.getElementById("misdealBtn").addEventListener("click", async () => {
-        const inPlay = HoldemState.unresolvedContributions(state);
-        const acted = state.seats.filter(p => p.hasActed).length;
-
-        const ok = await Dialog.confirm({
-            title: "Misdeal — take the hand back?",
-            message: inPlay > Betting.EPSILON_CHIPS
-                ? `${Money.format(inPlay)} goes back to the players who put it in, cards are cleared, and the same ` +
-                  `button deals again.${acted > 1 ? " Note that most rooms let a deal stand once two players have acted." : ""}`
-                : "Cards are cleared and the same button deals again. Nothing has been put in yet, so no chips move.",
-            confirmLabel: "Take it back",
-        });
-        if (!ok) return;
-
-        // The label is both the toast a dealer reads now and the words on the undo
-        // control afterwards, so it says what happened to the money rather than naming
-        // the ruling: "the misdeal" told a table nothing about where their chips went.
-        const label = inPlay > Betting.EPSILON_CHIPS
-            ? `Misdeal — ${Money.format(inPlay)} returned, same button deals again.`
-            : "Misdeal — nothing was in yet, same button deals again.";
-        runUndoable(label, () => Betting.takeHandBack(state));
-    });
-
-    document.getElementById("nextHandBtn").addEventListener("click", async () => {
-        // Moving on wipes every seat's contribution, so an unresolved pot is simply
-        // destroyed — measured at a four-handed table, pressing this with $8 in the
-        // middle took the table from 800 chips to 792, and the toast said nothing
-        // about it. Chips only ever leave this tool because a dealer meant them to.
-        const unresolved = HoldemState.unresolvedContributions(state);
-
-        if (unresolved > Betting.EPSILON_CHIPS) {
-            const ok = await Dialog.confirm({
-                title: `Throw away ${Money.format(unresolved)}?`,
-                message: "There's still money in the middle from this hand. Starting the next one takes it off the table without paying anybody — use Resolve Pot if somebody won it.",
-                confirmLabel: "Throw it away",
-                danger: true,
-            });
-            if (!ok) return;
-        }
-
-        // Say where the button landed so the dealer can confirm the rotation without
-        // hunting for the badge. Asked of the rotation itself rather than guessed at as
-        // "the next chair along" — which was only ever right at a table with nobody
-        // missing, and is the exact thing the dead button makes untrue.
-        const rotation = HoldemState.nextButtonRotation(state);
-        const nextDealer = rotation.buttonIndex !== null
-            ? rotation.buttonIndex
-            : HoldemState.buttonSeatForDeal({ ...state, dealerSeatIndex: HoldemState.nextSeatIndex(state, state.dealerSeatIndex, 1) });
-        const where = rotation.deadButton
-            ? `dead button on seat ${nextDealer + 1}`
-            : state.dedicatedDealer
-                ? `small blind on seat ${HoldemState.nextSeatIndex(state, nextDealer, 1) + 1}`
-                : `button on seat ${nextDealer + 1}`;
-        const discarded = unresolved > Betting.EPSILON_CHIPS
-            ? ` ${Money.format(unresolved)} taken off the table.`
-            : "";
-
-        runUndoable(`Next hand — ${where}. Seat the table, then deal.${discarded}`, () => {
-            // Written down as well as announced. The toast is a moment; the bank check
-            // is asked at cash-out, and until now it saw only that the chips were gone
-            // and reported them as missing.
-            if (unresolved > Betting.EPSILON_CHIPS) {
-                state.discarded = Money.round((Number(state.discarded) || 0) + unresolved);
-            }
-            HoldemState.startNextHand(state);
-        });
-    });
-
-    document.getElementById("resetTableBtn").addEventListener("click", async () => {
-        const ok = await Dialog.confirm({
-            title: "Reset the whole table?",
-            message: "Every seat, chip colour and note goes back to defaults. The hand history and session standings are cleared too.",
-            confirmLabel: "Reset table",
-            danger: true,
-        });
-        if (!ok) return;
-
-        HoldemState.clear();
-        Object.assign(state, HoldemState.createDefault());
-        clearActionHistory();
-        Render.mount(state, hooks);
-        Toast.show("Table reset.", { duration: 2500 });
-    });
-
-    // A pre-filled amount is a suggestion, so reaching for the box replaces it.
-    //
-    // Delegated from the document rather than wired per field: the raise pad, the
-    // add-chips sheet and the seat editor all build their inputs fresh every render,
-    // and a box added later should not have to remember to ask for this.
-    document.addEventListener("focusin", event => {
-        const field = event.target;
-        if (!Money.selectsOnFocus(field)) return;
-        if (!field.value) return;
-        // After the browser has finished placing its own caret, or it wins the race
-        // and the selection collapses again the moment the tap completes.
-        setTimeout(() => {
-            if (document.activeElement !== field) return;
-            try {
-                field.select();
-            } catch {
-                // A number input refuses setSelectionRange in some browsers; select()
-                // is the one that works on both, and if neither does the field is
-                // simply left as it was.
-            }
-        }, 0);
-    });
-
-    document.getElementById("resolvePotBtn").addEventListener("click", openPotWizard);
-
-    [
-        ["smallBlindInput", "smallBlind"],
-        ["bigBlindInput", "bigBlind"],
-        ["defaultStackInput", "defaultStack"],
-    ].forEach(([id, key]) => {
-        document.getElementById(id).addEventListener("input", e => {
-            state[key] = e.target.value === "" ? null : Number(e.target.value);
-            hooks.save(state);
-            Render.renderAll();
-        });
-    });
-
-    // The house's cut. Kept as a group rather than three loose fields, because
-    // migrate() guarantees the shape and half a rake object would be a table nobody
-    // could read back.
-    const readRake = () => {
-        const percent = Number(document.getElementById("rakePercentInput").value);
-        const cap = Number(document.getElementById("rakeCapInput").value);
-        state.rake = {
-            percent: Number.isFinite(percent) ? Math.min(100, Math.max(0, percent)) : 0,
-            cap: Number.isFinite(cap) && cap > 0 ? Money.round(cap) : null,
-            noFlopNoDrop: document.getElementById("rakeNoFlopInput").checked,
-        };
-        hooks.save(state);
-        Render.renderAll();
-    };
-    ["rakePercentInput", "rakeCapInput"].forEach(id => {
-        document.getElementById(id).addEventListener("input", readRake);
-    });
-    document.getElementById("rakeNoFlopInput").addEventListener("change", readRake);
-
-    document.getElementById("closeSeatEditorBtn").addEventListener("click", () => Render.closeSeatEditor());
-
-    document.getElementById("addChipsConfirmBtn").addEventListener("click", () => AddChips.confirm());
-    document.getElementById("addChipsCancelBtn").addEventListener("click", () => AddChips.close());
-    document.getElementById("addChipsOverlay").addEventListener("click", e => {
-        if (e.target.id === "addChipsOverlay") AddChips.close();
-    });
-    document.getElementById("addChipsInput").addEventListener("keydown", e => {
-        if (e.key === "Enter") AddChips.confirm();
-    });
-
-    // Escape is Modal's job now, for this sheet and the five others that never had it.
-    const rulingsOverlay = document.getElementById("rulingsOverlay");
-    const closeRulings = () => { rulingsOverlay.hidden = true; };
-    // The one time the browser refuses to save, say so out loud as well as leaving the
-    // standing warning in the Session panel. Set before the first render so a failure
-    // during start-up is caught too.
-    // Another tab writing to the same table. Said once, with the way out attached —
-    // reloading here adopts whatever that tab has done, which is the only resolution
-    // that doesn't throw somebody's work away.
-    HoldemState.onOtherTab = () => {
-        Toast.show(
-            "This table is open in another tab. Whichever acts last wins.",
-            { actionLabel: "Reload", onAction: () => window.location.reload(), duration: 20000 });
-        Render.renderStorageWarning();
-    };
-    HoldemState.watchOtherTabs();
-
-    HoldemState.onSaveFailed = () => {
-        Toast.show(
-            "This table isn't being saved — refreshing would lose it. Keep this tab open.",
-            { duration: 12000 });
-        Render.renderStorageWarning();
-    };
-
-    // The shortcut legend, built from the same list the handlers are keyed off, so a
-    // shortcut can't exist without a line here saying what it does.
-    const legend = document.getElementById("shortcutLegend");
-    if (legend) {
-        Shortcuts.LEGEND.forEach(entry => {
-            const term = document.createElement("dt");
-            entry.keys.forEach(key => {
-                const kbd = document.createElement("kbd");
-                kbd.className = "shortcutKey";
-                kbd.textContent = key;
-                term.appendChild(kbd);
-            });
-            const detail = document.createElement("dd");
-            detail.textContent = entry.what;
-            legend.appendChild(term);
-            legend.appendChild(detail);
-        });
-    }
-
-    // An index across the top of the rulings sheet, one chip per ruling.
-    //
-    // This is opened mid-argument with players waiting, and it was nine rulings of
-    // prose with no way in: reaching the last one meant scrolling 1.6 screens on a
-    // desktop, 2.1 on a phone and 3.5 on a phone held sideways. A dealer looking for
-    // the odd-chip rule had to read past seven others to find it.
-    //
-    // Built from the sections rather than written out beside them, so a ruling added
-    // later turns up in the index without anyone having to remember to add it twice.
-    const buildRulingsIndex = () => {
-        const index = document.getElementById("rulingsIndex");
-        if (!index || index.childElementCount > 0) return;
-        [...rulingsOverlay.querySelectorAll(".ruling")].forEach((section, i) => {
-            const heading = section.querySelector("h3");
-            if (!heading) return;
-            if (!section.id) section.id = `ruling${i + 1}`;
-
-            const jump = document.createElement("button");
-            jump.type = "button";
-            jump.className = "rulingsIndexBtn";
-            // A short label where the ruling gives one. The headings are sentences —
-            // "A short all-in doesn't reopen the betting" — and nine of those stacked
-            // one per row made the index 342px tall on a phone, which is most of the
-            // sheet before the first ruling. "Short all-in" says the same thing to
-            // somebody who is looking for it, and three fit on a line.
-            jump.textContent = section.dataset.short || heading.textContent;
-            // The full heading is still what it announces, so the short label never
-            // costs a screen reader the sentence.
-            if (section.dataset.short) jump.setAttribute("aria-label", heading.textContent);
-            jump.addEventListener("click", () => {
-                section.scrollIntoView({ block: "start", behavior: "smooth" });
-                // The heading is what the dealer is now reading, so that is where the
-                // keyboard and a screen reader should be too.
-                heading.setAttribute("tabindex", "-1");
-                heading.focus({ preventScroll: true });
-            });
-            index.appendChild(jump);
-        });
-    };
-
-    document.getElementById("openRulingsBtn").addEventListener("click", () => {
-        buildRulingsIndex();
-        rulingsOverlay.hidden = false;
-    });
-    document.getElementById("closeRulingsBtn").addEventListener("click", closeRulings);
-    rulingsOverlay.addEventListener("click", e => {
-        if (e.target === rulingsOverlay) closeRulings();
-    });
-
-    document.getElementById("seatMenuCancelBtn").addEventListener("click", () => SeatMenu.close());
-    document.getElementById("seatMenuOverlay").addEventListener("click", e => {
-        if (e.target.id === "seatMenuOverlay") SeatMenu.close();
-    });
-
-    document.getElementById("cardPickerCloseBtn").addEventListener("click", () => CardPicker.close());
-    document.getElementById("cardPickerClearBtn").addEventListener("click", () => CardPicker.clearSlot());
-    document.getElementById("cardPickerOverlay").addEventListener("click", e => {
-        if (e.target.id === "cardPickerOverlay") CardPicker.close();
-    });
-
-    document.getElementById("closePotWizardBtn").addEventListener("click", () => PotWizard.close());
-    document.getElementById("potWizardOverlay").addEventListener("click", e => {
-        if (e.target.id === "potWizardOverlay") PotWizard.close();
-    });
-
-    document.getElementById("clearHistoryBtn").addEventListener("click", async () => {
-        const ok = await Dialog.confirm({
-            title: "Clear the hand history?",
-            message: "This wipes every logged hand and the session standings, and puts the hand counter back to #1. Export first if anyone might want the numbers.",
-            confirmLabel: "Clear history",
-            danger: true,
-        });
-        if (!ok) return;
-
-        HoldemState.clearHistory(state);
-        Render.historyFilter = "";
-        document.getElementById("handHistoryFilter").value = "";
-        hooks.save(state);
-        Render.renderAll();
-        Toast.show("Hand history cleared.", { duration: 2500 });
-    });
-
-    document.getElementById("saveTableBtn").addEventListener("click", () => {
-        const blob = new Blob([HoldemState.toBackup(state)], { type: "application/json" });
-        const url = URL.createObjectURL(blob);
-        const link = document.createElement("a");
-        link.href = url;
-        link.download = HoldemState.backupFileName();
-        document.body.appendChild(link);
-        link.click();
-        document.body.removeChild(link);
-        URL.revokeObjectURL(url);
-        Toast.show(`Table saved as ${link.download}.`, { duration: 3500 });
-    });
-
-    document.getElementById("loadTableBtn").addEventListener("click", () => {
-        document.getElementById("loadTableInput").click();
-    });
-
-    document.getElementById("loadTableInput").addEventListener("change", async e => {
-        const file = e.target.files && e.target.files[0];
-        // Cleared straight away so picking the same file twice still fires a change.
-        e.target.value = "";
-        if (!file) return;
-
-        let text;
-        try {
-            text = await file.text();
-        } catch {
-            Toast.show("That file couldn't be read.", { duration: 4000 });
-            return;
-        }
-
-        const result = HoldemState.fromBackup(text);
-        if (result.error) {
-            Toast.show(result.error, { duration: 5000 });
-            return;
-        }
-
-        // Loading replaces everything: stacks, buy-ins, the button, the log. Naming
-        // what is about to be lost is the difference between a dealer choosing that
-        // and discovering it — and the current table might be the live one.
-        const here = HoldemState.sessionStandings(state).length;
-        const incoming = HoldemState.sessionStandings(result.table).length;
-        const when = result.savedAt ? new Date(result.savedAt) : null;
-        const saidWhen = when && !Number.isNaN(when.getTime())
-            ? ` It was saved ${when.toLocaleString()}.`
-            : "";
-        const ok = await Dialog.confirm({
-            title: "Replace this table?",
-            message:
-                `The file has a table with ${incoming} ${incoming === 1 ? "player" : "players"} in it.${saidWhen} ` +
-                `Loading it replaces the table on screen — ${here} ${here === 1 ? "player" : "players"}, ` +
-                `${(state.handHistory || []).length} logged ${(state.handHistory || []).length === 1 ? "hand" : "hands"}. ` +
-                `Undo will bring it back for a few seconds; after that it is gone.`,
-            confirmLabel: "Load it",
-            danger: true,
-        });
-        if (!ok) return;
-
-        runUndoable("loading a saved table", () => {
-            // Replace the contents rather than the reference: everything on the page
-            // holds a pointer to this object.
-            Object.keys(state).forEach(key => { delete state[key]; });
-            Object.assign(state, result.table);
-        });
-    });
-
-    // The filter is how the dealer looks at the log, not something about the table, so
-    // it lives on the view: it isn't saved, isn't undoable, and doesn't reach the other
-    // tab. Clearing the history clears it too, since there is nothing left to filter.
-    document.getElementById("handHistoryFilter").addEventListener("input", e => {
-        Render.historyFilter = e.target.value;
-        Render.renderHandHistory();
-    });
-
-    document.getElementById("exportHistoryBtn").addEventListener("click", () => {
-        if ((state.handHistory || []).length === 0) return;
-        // Always the whole night. A filter is for reading the panel; an export that
-        // quietly dropped the hands scrolled past would be a record with holes in it,
-        // and nothing on the CSV would say so.
-        HandHistoryExport.download(state.handHistory, HoldemState.sessionStandings(state),
-            { notes: state.notes });
-        if (Render.historyFilter) {
-            Toast.show(`Exported all ${state.handHistory.length} hands, not just the ${
-                state.handHistory.filter(h => Render.handMatchesFilter(h, Render.historyFilter)).length} shown.`,
-                { duration: 3500 });
-        }
-    });
-
-    // The load happens on the first line of this file, long before there's a Toast to
-    // show it in, so this is checked here rather than wired as a callback. The standing
-    // warning in the Session panel doesn't need it — that reads the flag every render —
-    // but an empty table is a thing a dealer needs told, not left to notice.
-    if (HoldemState.loadFailed) {
-        Toast.show(
-            "The saved table couldn't be read, so this one started empty.",
-            { duration: 12000 });
-    }
-});

JoshHeaps.Net/wwwroot/js/casino/holdem/modal.js

@@ -1,147 +0,0 @@
-// Keyboard and screen-reader behaviour for every overlay in the tool, in one place.
-//
-// There are six of them — seat menu, card picker, add chips, rulings, pot wizard,
-// confirm — opened and closed by five different modules, and each one was missing
-// the same three things: focus never moved into the dialog, Tab walked straight out
-// of it into the page behind the scrim, and Escape did nothing (only the rulings
-// sheet handled it). Measured before this: 0 of 5 moved focus in, 5 of 5 leaked Tab,
-// 1 of 5 closed on Escape.
-//
-// Rather than patch that into five modules, this watches the `hidden` attribute every
-// overlay already toggles. Nothing else had to change, and an overlay added later
-// gets the same behaviour without anyone remembering to wire it up — which is the
-// failure this is fixing in the first place.
-const Modal = {
-    // `:not([hidden])` matters — a sheet that is itself hidden inside an open overlay
-    // must not be a Tab stop.
-    FOCUSABLE: [
-        "a[href]",
-        "button:not([disabled])",
-        'input:not([disabled]):not([type="hidden"])',
-        "select:not([disabled])",
-        "textarea:not([disabled])",
-        '[tabindex]:not([tabindex="-1"])',
-    ].join(","),
-
-    open: [],
-
-    mount() {
-        document.querySelectorAll('[id$="Overlay"]').forEach(overlay => this.watch(overlay));
-        // Capture phase: the dialog gets first refusal on Escape and Tab, before any
-        // table-level shortcut sees them.
-        document.addEventListener("keydown", e => this.onKeyDown(e), true);
-    },
-
-    watch(overlay) {
-        const sync = () => {
-            const isOpen = !overlay.hidden;
-            const known = this.open.some(entry => entry.overlay === overlay);
-            if (isOpen && !known) this.onOpened(overlay);
-            else if (!isOpen && known) this.onClosed(overlay);
-        };
-        new MutationObserver(sync).observe(overlay, { attributes: true, attributeFilter: ["hidden"] });
-        sync();
-    },
-
-    sheetOf(overlay) {
-        return overlay.querySelector('[role="dialog"], [role="alertdialog"]') || overlay.firstElementChild || overlay;
-    },
-
-    focusableIn(overlay) {
-        return [...overlay.querySelectorAll(this.FOCUSABLE)].filter(el => {
-            if (el.closest("[hidden]")) return false;
-            const rect = el.getBoundingClientRect();
-            return rect.width > 0 && rect.height > 0;
-        });
-    },
-
-    onOpened(overlay) {
-        const sheet = this.sheetOf(overlay);
-        // aria-modal is only true while the thing is actually open, so it's set here
-        // rather than baked into the markup.
-        if (sheet) sheet.setAttribute("aria-modal", "true");
-
-        this.open.push({ overlay, returnFocus: document.activeElement });
-
-        // Focus the first real control. A dialog that leaves focus on the button
-        // behind it reads, to a screen reader, as though nothing happened at all.
-        // Content-only sheets get focus on the sheet so the title is announced.
-        const focusable = this.focusableIn(overlay);
-        const target = focusable[0];
-        if (target) {
-            target.focus({ preventScroll: true });
-        } else if (sheet) {
-            if (!sheet.hasAttribute("tabindex")) sheet.setAttribute("tabindex", "-1");
-            sheet.focus({ preventScroll: true });
-        }
-    },
-
-    onClosed(overlay) {
-        const index = this.open.findIndex(entry => entry.overlay === overlay);
-        if (index === -1) return;
-        const [entry] = this.open.splice(index, 1);
-
-        const sheet = this.sheetOf(overlay);
-        if (sheet) sheet.removeAttribute("aria-modal");
-
-        // Put the dealer back where they were. Without this, closing the pot wizard
-        // drops focus to the top of the document and the next Tab starts from the
-        // page header.
-        const back = entry.returnFocus;
-        if (back && back.isConnected && typeof back.focus === "function") {
-            back.focus({ preventScroll: true });
-        }
-    },
-
-    topmost() {
-        return this.open.length ? this.open[this.open.length - 1] : null;
-    },
-
-    // Escape presses the dialog's own cancel/close button rather than just hiding the
-    // overlay, so whatever that button does — resolving the confirm promise, clearing
-    // the add-chips draft — still happens. Only if there isn't one does it hide the
-    // overlay directly.
-    dismiss(overlay) {
-        const closer = overlay.querySelector("[data-modal-close]");
-        if (closer) closer.click();
-        else overlay.hidden = true;
-    },
-
-    onKeyDown(event) {
-        const top = this.topmost();
-        if (!top) return;
-
-        if (event.key === "Escape") {
-            event.preventDefault();
-            event.stopPropagation();
-            this.dismiss(top.overlay);
-            return;
-        }
-
-        if (event.key !== "Tab") return;
-
-        // Keep Tab inside the dialog. Everything behind the scrim is unreachable by
-        // mouse, so letting the keyboard wander back there is a trap with no way out.
-        const focusable = this.focusableIn(top.overlay);
-        if (focusable.length === 0) {
-            event.preventDefault();
-            return;
-        }
-
-        const first = focusable[0];
-        const last = focusable[focusable.length - 1];
-        const active = document.activeElement;
-
-        if (event.shiftKey && (active === first || !top.overlay.contains(active))) {
-            event.preventDefault();
-            last.focus({ preventScroll: true });
-        } else if (!event.shiftKey && (active === last || !top.overlay.contains(active))) {
-            event.preventDefault();
-            first.focus({ preventScroll: true });
-        }
-    },
-};
-
-if (typeof module !== "undefined" && module.exports) {
-    module.exports = Modal;
-}

JoshHeaps.Net/wwwroot/js/casino/holdem/money.js

@@ -1,171 +0,0 @@
-// Shared money handling for every casino surface. Kept apart from the table's
-// rendering so the quick-split calculator can pull it in without dragging the whole
-// seat/chip UI along with it.
-//
-// Everything the dealer touches is money, and money is decimal, so every module used
-// to carry its own `Math.round(x * 100) / 100`. That's one rounding rule written out
-// sixteen times in six files, which is sixteen chances for one of them to drift.
-// It lives here now, and the modules that do arithmetic call these instead.
-const Money = {
-    // Half a cent. Chip comparisons need a tolerance: a stack that lands on
-    // 0.0000000001 after a split is empty as far as a dealer is concerned, and an
-    // exact `> 0` would treat that player as still having chips to bet.
-    EPSILON: 0.004,
-
-    // All money maths goes through cents, so 0.1 + 0.2 never reaches a payout.
-    toCents(amount) {
-        return Math.round((Number(amount) || 0) * 100);
-    },
-
-    fromCents(cents) {
-        return cents / 100;
-    },
-
-    round(amount) {
-        return this.toCents(amount) / 100;
-    },
-
-    // Cents only when there are cents.
-    //
-    // A chip game deals in whole numbers nearly all the time, and a trailing ".00"
-    // is two characters that say nothing — measured at ~22px, against the 64px a
-    // seat puck has to show a stack in. "$1,250,000.00" doesn't fit and wraps;
-    // "$1,250,000" does. Amounts that genuinely carry cents still show them, so a
-    // 25c-blind game reads exactly as it did.
-    format(amount) {
-        const value = Number(amount) || 0;
-        const hasCents = this.toCents(value) % 100 !== 0;
-        return `$${value.toLocaleString(undefined, {
-            minimumFractionDigits: hasCents ? 2 : 0,
-            maximumFractionDigits: 2,
-        })}`;
-    },
-
-    // The same amount for a spreadsheet rather than for a person: no currency symbol
-    // and no thousands separators, because those are what make a column of money
-    // import as text and refuse to add up.
-    forSheet(amount) {
-        return (this.toCents(amount) / 100).toFixed(2);
-    },
-
-    // The chips to actually push, for an amount.
-    //
-    // A payout figure is the answer to the arithmetic, not to the dealer's job: they
-    // still have to work out that $132 is two blacks, a green, a red and two whites
-    // while six people watch. The chip legend already knows the denominations.
-    //
-    // Largest first, which is greedy and therefore not optimal for an arbitrary set of
-    // values — but poker chips are not arbitrary. Every real set is canonical (each
-    // denomination divides the next: 1, 5, 25, 100, 500), and greedy is exactly optimal
-    // on those. A dealer who invents a 3-and-7 chip set gets a valid answer that might
-    // use one chip more than it had to.
-    //
-    // Anything the smallest chip can't make comes back as `remainder` rather than being
-    // rounded away: a 50c share in a game whose smallest chip is a dollar is a real
-    // problem for the dealer to solve, not a rounding error to hide.
-    // The smallest chip the table has said it plays with, in cents. Zero when no
-    // denominations are set, which means the tool has been told nothing about what
-    // chips exist and shouldn't pretend otherwise.
-    chipStepCents(legend) {
-        const values = (legend || [])
-            .map(chip => this.toCents(chip.value))
-            .filter(cents => cents > 0);
-        return values.length > 0 ? Math.min(...values) : 0;
-    },
-
-    // Rounds an amount up to something the table can actually build out of its chips.
-    //
-    // Up rather than down or nearest: these are bet sizes, and a pot-sized bet that
-    // has been shaved is no longer a pot-sized bet. Rounding up also can't drop an
-    // amount below a legal minimum, which rounding the other way can.
-    upToChip(amount, legend) {
-        const step = this.chipStepCents(legend);
-        if (step <= 0) return this.round(amount);
-        const cents = this.toCents(amount);
-        if (cents <= 0) return this.round(amount);
-        return this.fromCents(Math.ceil(cents / step) * step);
-    },
-
-    // And down, for money coming *out* of a pot rather than going into it.
-    //
-    // The rake is the one amount in this tool that leaves the table, so the direction
-    // of the rounding is a decision about whose money it is. Down: a house that can't
-    // make 40c out of its chips takes nothing rather than a dollar, and the players
-    // keep the difference. Being wrong in the players' favour is the only way to be
-    // wrong about this that nobody has to argue about.
-    downToChip(amount, legend) {
-        const step = this.chipStepCents(legend);
-        if (step <= 0) return this.round(amount);
-        const cents = this.toCents(amount);
-        if (cents <= 0) return 0;
-        return this.fromCents(Math.floor(cents / step) * step);
-    },
-
-    chipBreakdown(amount, legend) {
-        let cents = this.toCents(amount);
-        if (cents <= 0) return { chips: [], remainder: 0 };
-
-        const values = (legend || [])
-            .map(chip => ({ chip, cents: this.toCents(chip.value) }))
-            .filter(entry => entry.cents > 0)
-            .sort((a, b) => b.cents - a.cents);
-
-        const chips = [];
-        values.forEach(entry => {
-            const count = Math.floor(cents / entry.cents);
-            if (count <= 0) return;
-            cents -= count * entry.cents;
-            chips.push({ value: this.fromCents(entry.cents), count, color: entry.chip.color });
-        });
-
-        return { chips, remainder: this.fromCents(cents) };
-    },
-
-    // "2×$50, 1×$25, 2×$1" — the breakdown as a dealer would say it out loud.
-    //
-    // A table with no chip legend gets nothing rather than "$132 no chip covers": it
-    // hasn't told us its denominations, so there is no advice to give and the amount
-    // stands on its own. A legend that exists but can't reach the amount is different,
-    // and does say so.
-    formatChipBreakdown(amount, legend) {
-        const hasDenominations = (legend || []).some(chip => this.toCents(chip.value) > 0);
-        if (!hasDenominations) return "";
-
-        const { chips, remainder } = this.chipBreakdown(amount, legend);
-        if (chips.length === 0 && remainder === 0) return "";
-        const parts = chips.map(chip => `${chip.count}×${this.format(chip.value)}`);
-        if (remainder > 0) parts.push(`${this.format(remainder)} no chip covers`);
-        return parts.join(", ");
-    },
-
-    // Should focusing this field select what's already in it?
-    //
-    // Every amount box in this tool opens pre-filled with a suggestion: the raise pad
-    // offers the minimum, Add chips offers a buy-in, the seat editor offers the stack
-    // it already has. A dealer taps the box because they want a *different* number,
-    // and a tap puts the caret after the suggestion instead of over it. Measured on a
-    // phone: the raise pad showing 4, tap, type "60" — the field reads 460. Add chips
-    // showing 200, tap, type "50" — 20050.
-    //
-    // Only number boxes. A name or a note is a thing you edit, and selecting all of
-    // it on focus would be the same mistake pointing the other way.
-    selectsOnFocus(field) {
-        if (!field || field.tagName !== "INPUT") return false;
-        const type = String(field.type || "").toLowerCase();
-        if (type === "number") return true;
-        return type === "text" && String(field.inputMode || "").toLowerCase() === "decimal";
-    },
-
-    // "+$40.00" / "-$40.00" rather than "$-40.00" — a standings column is read at a
-    // glance, and the sign belongs out front where the eye lands first.
-    formatSigned(amount) {
-        const value = Number(amount) || 0;
-        if (value > 0) return `+${this.format(value)}`;
-        if (value < 0) return `-${this.format(Math.abs(value))}`;
-        return this.format(0);
-    },
-};
-
-if (typeof module !== "undefined" && module.exports) {
-    module.exports = Money;
-}

JoshHeaps.Net/wwwroot/js/casino/holdem/potCalculator.js

@@ -1,173 +0,0 @@
-// Pure side-pot math. No DOM, no globals besides the PotCalculator namespace, so the
-// dealer's payout logic can be reasoned about (and unit tested) on its own.
-//
-// A "contribution entry" is { id, remaining, folded }. `remaining` starts as the amount
-// that player put in the pot and is whittled down round by round as money gets paid out.
-const PotCalculator = {
-    EPSILON: Money.EPSILON,
-
-    // Builds the initial entry list from raw contributions, keeping folded players in
-    // (their chips are still "dead money" owed to whoever wins) while excluding anyone
-    // who put in nothing at all.
-    buildEntries(players) {
-        return players
-            .filter(p => p.contribution > this.EPSILON)
-            .map(p => ({ id: p.id, remaining: p.contribution, folded: !!p.folded }));
-    },
-
-    totalPot(entries) {
-        return entries.reduce((sum, e) => sum + e.remaining, 0);
-    },
-
-    // Players still eligible to be picked as a winner for the money that's left.
-    getContenders(entries) {
-        return entries.filter(e => !e.folded && e.remaining > this.EPSILON);
-    },
-
-    // Splits the money on the table into the main pot and any side pots, with who can
-    // win each. Read-only — this is what a dealer says out loud before the showdown
-    // ("main pot four-eighty, side pot ninety between seats 3 and 5"), which is the
-    // announcement that goes missing far more often than the arithmetic goes wrong.
-    //
-    // Every distinct all-in amount opens a new layer: each player pays into a layer up
-    // to their own contribution, and only players who reached that height can win it.
-    // Folded money stays in — it's dead money owed to whoever wins the layer it fell in.
-    layers(players) {
-        // Uncalled chips were never played for, so they come off the top before any
-        // pot is built. Deriving the pots from what's left is what keeps this function
-        // and uncalledReturns() from disagreeing about the same money — they used to
-        // decide "uncontested" separately, and an overbet that its own bettor was
-        // still live for got announced as a side pot only they could win.
-        const returned = new Map(this.uncalledReturns(players).map(r => [r.id, Money.toCents(r.amount)]));
-        const live = players
-            .map(p => ({ ...p, cents: Money.toCents(p.contribution) - (returned.get(p.id) || 0) }))
-            .filter(p => p.cents > 0);
-        if (live.length === 0) return [];
-
-        const heights = [...new Set(live.map(p => p.cents))].sort((a, b) => a - b);
-
-        const layers = [];
-        let floor = 0;
-        heights.forEach(height => {
-            const band = height - floor;
-            const payers = live.filter(p => p.cents >= height);
-            const amount = band * payers.length;
-            const eligible = payers.filter(p => !p.folded).map(p => p.id);
-
-            if (amount > 0) {
-                if (eligible.length > 0) {
-                    layers.push({ amount: Money.fromCents(amount), eligible });
-                } else if (layers.length > 0) {
-                    // Everyone who reached this height folded, so it isn't a pot of its
-                    // own — it's dead money owed to whoever wins the layer underneath.
-                    // Dropping it would quietly shrink the announced pot.
-                    const below = layers[layers.length - 1];
-                    below.amount = Money.round(below.amount + Money.fromCents(amount));
-                }
-                // With no layer underneath either, nobody in the hand is live at all.
-                // That's a fold flag the dealer needs to fix, not a payout to guess at.
-            }
-            floor = height;
-        });
-
-        // Consecutive layers with the same set of eligible players are one pot to a
-        // dealer — nobody announces two side pots between the same two people.
-        const merged = [];
-        layers.forEach(layer => {
-            const previous = merged[merged.length - 1];
-            const sameEligibility =
-                previous &&
-                previous.eligible.length === layer.eligible.length &&
-                previous.eligible.every(id => layer.eligible.includes(id));
-
-            if (sameEligibility) {
-                previous.amount = Money.round(previous.amount + layer.amount);
-            } else {
-                merged.push({ ...layer });
-            }
-        });
-
-        return merged.map((layer, index) => ({
-            ...layer,
-            label: index === 0 ? "Main pot" : `Side pot ${index}`,
-        }));
-    },
-
-    // Chips nobody could call, which the dealer pushes back rather than into the pot.
-    //
-    // A bet is only called up to what somebody *else* was willing to put in, so the
-    // ceiling for each player is the largest contribution among everyone but them.
-    // Measuring against the whole table instead — including the bettor's own chips —
-    // makes the biggest bet its own yardstick, so the one case this exists for (you
-    // shove, a short stack calls for less) comes back empty.
-    uncalledReturns(players) {
-        const contributing = players.filter(p => p.contribution > this.EPSILON);
-
-        // Nobody live at all means the fold flags are wrong, not that every chip on
-        // the table was uncalled. That's a correction for the dealer to make, so say
-        // nothing here and let the wizard ask them to fix it.
-        if (contributing.filter(p => !p.folded).length === 0) return [];
-
-        const cents = contributing.map(p => Money.toCents(p.contribution));
-
-        return contributing
-            .map((p, index) => {
-                const others = cents.filter((_, i) => i !== index);
-                const cap = others.length > 0 ? Math.max(...others) : 0;
-                return { id: p.id, amount: Money.fromCents(cents[index] - cap) };
-            })
-            .filter(r => r.amount > this.EPSILON);
-    },
-
-    // Awards the current pot layer to `winnerIds` (one id, or several for a split/tie).
-    // The payout is capped at the smallest remaining contribution among the winners —
-    // that's the classic side-pot rule: an all-in player can only win what everyone at
-    // the table matched, and the excess rolls forward to the next round.
-    resolveRound(entries, winnerIds) {
-        const winners = entries.filter(e => winnerIds.includes(e.id) && e.remaining > this.EPSILON);
-        if (winners.length === 0) {
-            throw new Error("No valid winners selected for this round.");
-        }
-
-        const cap = Math.min(...winners.map(w => w.remaining));
-        let payoutPool = 0;
-        const updatedEntries = entries.map(e => {
-            if (e.remaining <= this.EPSILON) return e;
-            const used = Math.min(e.remaining, cap);
-            payoutPool += used;
-            return { ...e, remaining: Money.round(e.remaining - used) };
-        });
-
-        payoutPool = Money.round(payoutPool);
-        const baseShareCents = Math.floor(Money.toCents(payoutPool) / winners.length);
-        let leftoverCents = Money.toCents(payoutPool) - baseShareCents * winners.length;
-
-        const perWinner = winnerIds
-            .filter(id => winners.some(w => w.id === id))
-            .map(id => ({ id, amountCents: baseShareCents }));
-
-        // Odd cents (can't split evenly) go one at a time to the winners, in the order
-        // they were selected, so nothing is ever lost to rounding.
-        let i = 0;
-        while (leftoverCents > 0 && perWinner.length > 0) {
-            perWinner[i % perWinner.length].amountCents += 1;
-            leftoverCents--;
-            i++;
-        }
-
-        const result = perWinner.map(w => ({ id: w.id, amount: Money.fromCents(w.amountCents) }));
-        const remainingContenders = this.getContenders(updatedEntries);
-
-        return {
-            payoutPool,
-            capApplied: cap,
-            perWinner: result,
-            updatedEntries,
-            remainingContenders,
-        };
-    },
-};
-
-if (typeof module !== "undefined" && module.exports) {
-    module.exports = PotCalculator;
-}

JoshHeaps.Net/wwwroot/js/casino/holdem/potWizard.js

@@ -1,346 +0,0 @@
-// Walks the dealer through awarding the pot: "who won?", and if that player was
-// all-in for less than everyone else, "who's next?" — repeating until every dollar
-// in the pot has been assigned. Built on PotCalculator's pure round-resolution math.
-const PotWizard = {
-    state: null,
-    onFinished: null,
-    entries: [],
-    playerLabelById: new Map(),
-    log: [],
-
-    open(state, onFinished) {
-        this.state = state;
-        this.onFinished = onFinished;
-
-        const players = state.seats.filter(
-            p => HoldemState.computeContribution(p, state.chipLegend, state.basePotAmount) > 0
-        );
-        this.playerLabelById = new Map(
-            players.map(p => [p.id, this.labelFor(p, state.seats.indexOf(p))])
-        );
-        this.seatIndexById = new Map(players.map(p => [p.id, state.seats.indexOf(p)]));
-        // The label carries name and cards together for the log and the payout lines;
-        // the choice rows want them separately so each can be styled and read on its own.
-        this.nameById = new Map(
-            players.map(p => [p.id, HoldemState.displayName(p, state.seats.indexOf(p))])
-        );
-        this.cardsById = new Map(
-            players.map(p => [p.id, (p.cards || []).filter(Boolean)])
-        );
-        const contributions = players.map(p => ({
-            id: p.id,
-            contribution: HoldemState.computeContribution(p, state.chipLegend, state.basePotAmount),
-            // A seat switched off mid-hand still has its chips in the pot, but it
-            // can no more win them than a folded one can — same dead money, and the
-            // wizard must not offer it as a winner.
-            folded: p.folded || HoldemState.isDeadMoney(p),
-        }));
-        this.entries = PotCalculator.buildEntries(contributions);
-        // Kept so the wizard can show the whole breakdown up front, not just the layer
-        // it happens to be asking about.
-        this.layers = PotCalculator.layers(contributions);
-        this.returns = PotCalculator.uncalledReturns(contributions);
-        this.log = [];
-        this.totals = new Map();
-
-        document.getElementById("potWizardOverlay").hidden = false;
-        this.renderStep();
-    },
-
-    close() {
-        document.getElementById("potWizardOverlay").hidden = true;
-    },
-
-    labelFor(player, seatIndex) {
-        const name = HoldemState.displayName(player, seatIndex);
-        const cards = (player.cards || []).filter(Boolean).map(c => Render.formatCard(c)).join(" ");
-        return cards ? `${name} (${cards})` : name;
-    },
-
-    addToTotal(id, amount) {
-        this.totals.set(id, (this.totals.get(id) || 0) + amount);
-    },
-
-    // A chopped pot rarely divides exactly, and the odd chip goes to the first player
-    // left of the button — not to whoever the dealer happened to tick first. The
-    // calculator hands leftovers out in the order it's given the winners, so ordering
-    // them here is what makes the payout match the rule.
-    orderFromButton(ids) {
-        const distance = new Map();
-        for (let step = 1; step <= this.state.seatCount; step++) {
-            distance.set(HoldemState.nextSeatIndex(this.state, this.state.dealerSeatIndex, step), step);
-        }
-        return [...ids].sort((a, b) =>
-            (distance.get(this.seatIndexById.get(a)) ?? 0) - (distance.get(this.seatIndexById.get(b)) ?? 0)
-        );
-    },
-
-    renderStep() {
-        // Auto-resolve any round where only one player is left standing — nothing to ask.
-        let contenders = PotCalculator.getContenders(this.entries);
-        while (contenders.length === 1) {
-            const result = PotCalculator.resolveRound(this.entries, [contenders[0].id]);
-            this.recordRound(result);
-            this.entries = result.updatedEntries;
-            contenders = PotCalculator.getContenders(this.entries);
-        }
-
-        const body = document.getElementById("potWizardBody");
-        body.innerHTML = "";
-        if (this.log.length === 0) body.appendChild(this.renderBreakdown());
-        body.appendChild(this.renderLog());
-
-        const remaining = PotCalculator.totalPot(this.entries.filter(e => e.remaining > PotCalculator.EPSILON));
-
-        if (contenders.length === 0 && remaining > PotCalculator.EPSILON) {
-            const warning = document.createElement("p");
-            warning.className = "potWizardPrompt";
-
-            // Money left over because nobody could call it isn't a pot anyone won —
-            // it goes back to whoever put it in. Telling the dealer to un-fold someone
-            // to "win" it would be wrong.
-            const returned = (this.returns || []).reduce((sum, r) => sum + r.amount, 0);
-            if (Math.abs(returned - remaining) <= PotCalculator.EPSILON && returned > 0) {
-                const who = this.returns.map(r => this.playerLabelById.get(r.id)).join(", ");
-                warning.textContent = `${Money.format(remaining)} was never called — push it back to ${who} rather than paying it out.`;
-            } else {
-                warning.textContent = `${Money.format(remaining)} is still unassigned, but every remaining player is marked Folded. Uncheck Fold on whoever should win it.`;
-            }
-            body.appendChild(warning);
-            body.appendChild(this.renderSummary());
-            return;
-        }
-
-        if (contenders.length === 0 || remaining <= PotCalculator.EPSILON) {
-            body.appendChild(this.renderSummary());
-            return;
-        }
-
-        const round = document.createElement("div");
-        round.className = "potWizardRound";
-
-        const prompt = document.createElement("p");
-        prompt.className = "potWizardPrompt";
-        prompt.innerHTML = this.log.length === 0
-            ? `Who won the hand? <strong>${Money.format(remaining)}</strong> is in play.`
-            : `That side pot still leaves <strong>${Money.format(remaining)}</strong> unassigned — who's next best?`;
-        round.appendChild(prompt);
-
-        const choices = document.createElement("div");
-        choices.className = "potWizardChoices";
-        contenders.forEach(c => {
-            const label = document.createElement("label");
-            label.className = "potWizardChoice";
-
-            const checkbox = document.createElement("input");
-            checkbox.type = "checkbox";
-            checkbox.value = c.id;
-            // The row is the target, not the box — so the row has to look chosen too.
-            checkbox.addEventListener("change", () => {
-                label.classList.toggle("chosen", checkbox.checked);
-            });
-            label.appendChild(checkbox);
-
-            const text = document.createElement("span");
-            text.className = "potWizardChoiceText";
-
-            const name = document.createElement("span");
-            name.className = "potWizardChoiceName";
-            name.textContent = this.nameById.get(c.id);
-            text.appendChild(name);
-
-            const upTo = document.createElement("span");
-            upTo.className = "potWizardChoiceUpTo";
-            upTo.textContent = `up to ${Money.format(c.remaining)}`;
-            text.appendChild(upTo);
-            label.appendChild(text);
-
-            // Cards sit apart from the name rather than inside it, so a dealer reading
-            // a row across the table sees the hand, not a sentence.
-            const cards = this.cardsById.get(c.id) || [];
-            if (cards.length > 0) {
-                const cardsEl = document.createElement("span");
-                cardsEl.className = "potWizardChoiceCards";
-                cards.forEach((card, i) => {
-                    if (i > 0) cardsEl.appendChild(document.createTextNode(" "));
-                    const span = document.createElement("span");
-                    if (/[HD]$/i.test(card)) span.className = "cardRed";
-                    span.textContent = Render.formatCard(card);
-                    cardsEl.appendChild(span);
-                });
-                label.appendChild(cardsEl);
-            }
-
-            choices.appendChild(label);
-        });
-        round.appendChild(choices);
-
-        const hint = document.createElement("p");
-        hint.className = "fieldHint";
-        hint.textContent = "Check more than one to split the pot on a tie.";
-        round.appendChild(hint);
-
-        const confirmBtn = document.createElement("button");
-        confirmBtn.className = "holdemBtn holdemBtnAccent";
-        confirmBtn.textContent = "Confirm Winner(s)";
-        confirmBtn.addEventListener("click", () => {
-            const selected = Array.from(choices.querySelectorAll("input:checked")).map(i => i.value);
-            if (selected.length === 0) return;
-            const result = PotCalculator.resolveRound(this.entries, this.orderFromButton(selected));
-            this.recordRound(result);
-            this.entries = result.updatedEntries;
-            this.renderStep();
-        });
-        round.appendChild(confirmBtn);
-
-        body.appendChild(round);
-    },
-
-    recordRound(result) {
-        result.perWinner.forEach(w => this.addToTotal(w.id, w.amount));
-        this.log.push({
-            amount: result.payoutPool,
-            winners: result.perWinner.map(w => `${this.playerLabelById.get(w.id)} (${Money.format(w.amount)})`),
-        });
-    },
-
-    // The announcement, spelled out before anyone is asked to pick a winner: what the
-    // main pot is worth, what each side pot is worth, and who can win each.
-    renderBreakdown() {
-        const node = Render.buildPotBreakdown(
-            this.layers || [],
-            this.returns || [],
-            id => this.playerLabelById.get(id),
-            "Announce before the showdown"
-        );
-        if (!node) return document.createDocumentFragment();
-        node.classList.add("potBreakdownWizard");
-        return node;
-    },
-
-    renderLog() {
-        const wrap = document.createElement("div");
-        wrap.className = "potWizardLog";
-        if (this.log.length === 0) return wrap;
-
-        this.log.forEach((entry, idx) => {
-            const line = document.createElement("p");
-            line.className = "potWizardLogLine";
-            line.textContent = `Pot ${idx + 1}: ${Money.format(entry.amount)} → ${entry.winners.join(", ")}`;
-            wrap.appendChild(line);
-        });
-        return wrap;
-    },
-
-    // What the house takes out of this pot, and what is left to push.
-    //
-    // Worked out here rather than at the end so the dealer sees it before anything
-    // moves: the summary is the last chance to disagree with the arithmetic, and a
-    // rake that only appeared in the hand log afterwards would be the tool taking
-    // money quietly.
-    rakeSplit() {
-        const gross = Array.from(this.totals.entries()).map(([id, amount]) => ({
-            id,
-            label: this.playerLabelById.get(id),
-            amount,
-        }));
-        const pot = gross.reduce((sum, p) => sum + p.amount, 0);
-        const sawFlop = (this.state.street || "preflop") !== "preflop";
-        const rake = HoldemState.rakeOn(this.state, pot, sawFlop);
-        return { pot, sawFlop, ...HoldemState.applyRake(gross, rake) };
-    },
-
-    renderSummary() {
-        const wrap = document.createElement("div");
-        wrap.className = "potWizardSummary";
-
-        const heading = document.createElement("h3");
-        heading.textContent = "Final Payouts";
-        wrap.appendChild(heading);
-
-        const split = this.rakeSplit();
-        const rakeSet = Number((this.state.rake || {}).percent) > 0;
-        if (rakeSet && this.totals.size > 0) {
-            const line = document.createElement("p");
-            line.className = "potWizardRake";
-            const cap = Number(this.state.rake.cap) > 0 ? `, capped at ${Money.format(this.state.rake.cap)}` : "";
-            line.textContent = split.rake > 0
-                ? `House takes ${Money.format(split.rake)} of ${Money.format(split.pot)} — ${this.state.rake.percent}%${cap}.`
-                : split.sawFlop
-                    ? `No rake on this one — ${this.state.rake.percent}% of ${Money.format(split.pot)} doesn't make a chip the table has.`
-                    : "No flop, no drop — nothing taken from a pot that ended before the flop.";
-            wrap.appendChild(line);
-        }
-
-        if (this.totals.size === 0) {
-            const empty = document.createElement("p");
-            empty.className = "fieldHint";
-            empty.textContent = "Nobody has money in this pot yet — mark seats \"In hand\" and set contributions first.";
-            wrap.appendChild(empty);
-        } else {
-            const legend = (this.state && this.state.chipLegend) || [];
-            const list = document.createElement("ul");
-            for (const { id, amount } of split.payouts) {
-                const li = document.createElement("li");
-                li.textContent = `${this.playerLabelById.get(id)} — ${Money.format(amount)}`;
-
-                // The amount is the answer to the arithmetic; the chips are the answer
-                // to the dealer's job. Only when the legend has been filled in — a
-                // table that never set up chip colours gets the number on its own,
-                // which is what it had before.
-                const chips = Money.formatChipBreakdown(amount, legend);
-                if (chips) {
-                    const note = document.createElement("span");
-                    note.className = "payoutChips";
-                    note.textContent = chips;
-                    li.appendChild(note);
-                }
-                list.appendChild(li);
-            }
-            wrap.appendChild(list);
-        }
-
-        const actions = document.createElement("div");
-        actions.className = "potWizardActions";
-
-        const applyBtn = document.createElement("button");
-        applyBtn.className = "holdemBtn holdemBtnAccent";
-        applyBtn.textContent = "Start Next Hand";
-        applyBtn.addEventListener("click", () => {
-            // Recomputed rather than reused from the render: the same numbers, but
-            // taken at the moment the dealer commits rather than when they last
-            // looked at the screen.
-            const paid = this.rakeSplit();
-            this.close();
-            this.onFinished(paid.payouts, { rake: paid.rake, pot: paid.pot });
-        });
-        actions.appendChild(applyBtn);
-
-        // This button cancels — it does not pay anybody. Under a heading reading
-        // "Final Payouts" with an amount beside a name, "Close" reads like dismissing
-        // something already done, and a dealer who taps it walks away believing the
-        // pot has been pushed. It hasn't: the chips are still in the middle and the
-        // hand isn't logged. So it says what it does.
-        const cancelBtn = document.createElement("button");
-        cancelBtn.className = "holdemBtn holdemBtnGhost";
-        cancelBtn.textContent = "Cancel — don't pay yet";
-        cancelBtn.addEventListener("click", () => this.close());
-        actions.appendChild(cancelBtn);
-
-        if (this.totals.size > 0) {
-            const note = document.createElement("p");
-            note.className = "fieldHint potWizardPendingNote";
-            note.textContent = "Nothing has been paid out yet. Start Next Hand pushes the pot and logs the hand.";
-            wrap.appendChild(actions);
-            wrap.appendChild(note);
-            return wrap;
-        }
-
-        wrap.appendChild(actions);
-        return wrap;
-    },
-};
-
-if (typeof module !== "undefined" && module.exports) {
-    module.exports = PotWizard;
-}

JoshHeaps.Net/wwwroot/js/casino/holdem/quickSplit.js

@@ -1,371 +0,0 @@
-// The quick-split screen: pot in, payout out, nothing to set up and nothing saved.
-// A dealer opens this one-handed with players waiting, so every control is a tap and
-// the answer updates as they type rather than behind a "calculate" button.
-const QuickSplit = {
-    WAY_CHOICES: [2, 3, 4, 5],
-    CHIP_CHOICES: [
-        { value: 0.01, label: "1¢" },
-        { value: 0.25, label: "25¢" },
-        { value: 1, label: "$1" },
-        { value: 5, label: "$5" },
-        { value: 25, label: "$25" },
-    ],
-    MAX_WAYS: 12,
-
-    ways: 2,
-    chip: 1,
-
-    // "even" is the common case — one pot, everyone matched. "uneven" is the one this
-    // screen used to send people back to the full table for: somebody all-in for less,
-    // so the money splits into a main pot and side pots.
-    mode: "even",
-    entries: [],
-
-    mount() {
-        this.potInput = document.getElementById("potInput");
-        this.clearPotBtn = document.getElementById("clearPotBtn");
-        this.entries = [{ amount: "", folded: false }, { amount: "", folded: false }, { amount: "", folded: false }];
-
-        this.renderWayChoices();
-        this.renderChipChoices();
-        this.renderUnevenRows();
-
-        document.getElementById("modeEvenBtn").addEventListener("click", () => this.setMode("even"));
-        document.getElementById("modeUnevenBtn").addEventListener("click", () => this.setMode("uneven"));
-        document.getElementById("addPlayerBtn").addEventListener("click", () => {
-            this.entries.push({ amount: "", folded: false });
-            this.renderUnevenRows();
-            this.update();
-        });
-
-        this.potInput.addEventListener("input", () => {
-            this.sanitizePotInput();
-            this.update();
-        });
-
-        this.clearPotBtn.addEventListener("click", () => {
-            this.potInput.value = "";
-            this.potInput.focus();
-            this.update();
-        });
-
-        document.getElementById("resetSplitBtn").addEventListener("click", () => {
-            this.potInput.value = "";
-            this.ways = 2;
-            this.chip = 1;
-            this.renderWayChoices();
-            this.renderChipChoices();
-            this.potInput.focus();
-            this.update();
-        });
-
-        this.update();
-    },
-
-    // Keeps the field to something parseable without fighting the typist: digits and a
-    // single decimal point, at most two places.
-    sanitizePotInput() {
-        const cleaned = this.potInput.value
-            .replace(/[^0-9.]/g, "")
-            .replace(/(\..*)\./g, "$1")
-            .replace(/(\.\d\d)\d+/, "$1");
-        if (cleaned !== this.potInput.value) this.potInput.value = cleaned;
-    },
-
-    makeChoiceButton(label, isSelected, onPick) {
-        const btn = document.createElement("button");
-        btn.type = "button";
-        btn.className = "choiceChip";
-        btn.textContent = label;
-        btn.setAttribute("aria-pressed", String(isSelected));
-        btn.classList.toggle("selected", isSelected);
-        btn.addEventListener("click", onPick);
-        return btn;
-    },
-
-    renderWayChoices() {
-        const row = document.getElementById("waysChoices");
-        row.innerHTML = "";
-
-        this.WAY_CHOICES.forEach(count => {
-            row.appendChild(
-                this.makeChoiceButton(String(count), this.ways === count, () => {
-                    this.ways = count;
-                    this.renderWayChoices();
-                    this.update();
-                })
-            );
-        });
-
-        // Beyond a five-way chop it's rare enough to hide behind a stepper rather than
-        // spend a row of buttons on it.
-        const more = document.createElement("div");
-        more.className = "waysStepper";
-
-        const minus = this.makeStepButton("−", () => this.stepWays(-1));
-        const plus = this.makeStepButton("+", () => this.stepWays(1));
-        const readout = document.createElement("span");
-        readout.className = "waysReadout";
-        readout.textContent = `${this.ways} ways`;
-
-        more.appendChild(minus);
-        more.appendChild(readout);
-        more.appendChild(plus);
-        row.appendChild(more);
-    },
-
-    makeStepButton(label, onPick) {
-        const btn = document.createElement("button");
-        btn.type = "button";
-        btn.className = "stepBtn";
-        btn.textContent = label;
-        btn.addEventListener("click", onPick);
-        return btn;
-    },
-
-    stepWays(delta) {
-        this.ways = Math.max(2, Math.min(this.MAX_WAYS, this.ways + delta));
-        this.renderWayChoices();
-        this.update();
-    },
-
-    renderChipChoices() {
-        const row = document.getElementById("chipChoices");
-        row.innerHTML = "";
-        this.CHIP_CHOICES.forEach(choice => {
-            row.appendChild(
-                this.makeChoiceButton(choice.label, this.chip === choice.value, () => {
-                    this.chip = choice.value;
-                    this.renderChipChoices();
-                    this.update();
-                })
-            );
-        });
-    },
-
-    setMode(mode) {
-        this.mode = mode;
-        document.getElementById("modeEvenBtn").classList.toggle("selected", mode === "even");
-        document.getElementById("modeUnevenBtn").classList.toggle("selected", mode === "uneven");
-
-        document.querySelectorAll(".evenOnly").forEach(el => { el.hidden = mode !== "even"; });
-        document.querySelectorAll(".unevenOnly").forEach(el => { el.hidden = mode !== "uneven"; });
-        document.getElementById("splitResult").hidden = mode !== "even";
-        document.getElementById("unevenResult").hidden = mode !== "uneven";
-
-        this.update();
-    },
-
-    renderUnevenRows() {
-        const host = document.getElementById("unevenRows");
-        const template = document.getElementById("unevenRowTemplate");
-        host.innerHTML = "";
-
-        this.entries.forEach((entry, index) => {
-            const row = template.content.firstElementChild.cloneNode(true);
-            row.querySelector(".unevenRowLabel").textContent = `P${index + 1}`;
-
-            const amount = row.querySelector(".unevenAmount");
-            amount.value = entry.amount;
-            amount.setAttribute("aria-label", `Player ${index + 1} amount`);
-            amount.addEventListener("input", () => {
-                entry.amount = amount.value.replace(/[^0-9.]/g, "").replace(/(\..*)\./g, "$1");
-                if (entry.amount !== amount.value) amount.value = entry.amount;
-                this.update();
-            });
-
-            // Folded money stays in the pot as dead money, but its owner can't win any
-            // of it — which is exactly the distinction that makes side pots tricky.
-            const fold = row.querySelector(".unevenFoldBtn");
-            fold.classList.toggle("selected", entry.folded);
-            fold.setAttribute("aria-pressed", String(entry.folded));
-            fold.addEventListener("click", () => {
-                entry.folded = !entry.folded;
-                this.renderUnevenRows();
-                this.update();
-            });
-
-            const remove = row.querySelector(".unevenRemoveBtn");
-            remove.disabled = this.entries.length <= 2;
-            remove.addEventListener("click", () => {
-                this.entries.splice(index, 1);
-                this.renderUnevenRows();
-                this.update();
-            });
-
-            host.appendChild(row);
-        });
-    },
-
-    // Chopping one of the pots listed above, without leaving the screen that worked it
-    // out. Starts closed and at as many ways as there are players who can win the pot,
-    // which is the common case; the stepper covers a chop between fewer of them, which
-    // is the other one.
-    //
-    // The per-pot ways live on the row rather than in `this.ways`, so opening a chop on
-    // the main pot doesn't change what the side pot below it is saying.
-    addChopControl(row, amount, contenderCount) {
-        let ways = contenderCount;
-        let open = false;
-
-        const toggle = document.createElement("button");
-        toggle.type = "button";
-        toggle.className = "unevenChopToggle";
-
-        const detail = document.createElement("div");
-        detail.className = "unevenChopDetail";
-        detail.hidden = true;
-
-        const draw = () => {
-            toggle.textContent = open ? "Hide chop" : "Chop";
-            toggle.setAttribute("aria-expanded", String(open));
-            detail.hidden = !open;
-            if (!open) return;
-
-            const result = SplitCalculator.split(amount, ways, this.chip);
-            detail.innerHTML = "";
-
-            const stepper = document.createElement("div");
-            stepper.className = "unevenChopWays";
-            stepper.appendChild(this.makeStepButton("−", () => {
-                if (ways > 2) { ways -= 1; draw(); }
-            }));
-            const label = document.createElement("span");
-            label.className = "unevenChopWaysLabel";
-            label.textContent = `${ways} ways`;
-            stepper.appendChild(label);
-            stepper.appendChild(this.makeStepButton("+", () => {
-                if (ways < Math.max(contenderCount, this.MAX_WAYS)) { ways += 1; draw(); }
-            }));
-            detail.appendChild(stepper);
-
-            const each = document.createElement("p");
-            each.className = "unevenChopEach";
-            each.textContent = `${Money.format(result.each)} each`;
-            detail.appendChild(each);
-
-            // Same wording as the main split, because it is the same rule and a dealer
-            // shouldn't have to notice they're reading a different screen.
-            if (result.valid && result.oddChips > 0) {
-                const odd = document.createElement("p");
-                odd.className = "unevenChopNote";
-                odd.textContent = result.oddChips === 1
-                    ? `plus one odd ${Money.format(result.chip)} chip to the first player left of the button`
-                    : `plus ${result.oddChips} odd ${Money.format(result.chip)} chips — one each to the ` +
-                      `first ${result.oddChips} players left of the button`;
-                detail.appendChild(odd);
-            }
-            if (result.valid && result.dust > 0) {
-                const dust = document.createElement("p");
-                dust.className = "unevenChopNote unevenChopDust";
-                dust.textContent =
-                    `${Money.format(result.dust)} doesn't divide into ${Money.format(result.chip)} chips — ` +
-                    `pick a smaller denomination.`;
-                detail.appendChild(dust);
-            }
-        };
-
-        toggle.addEventListener("click", () => { open = !open; draw(); });
-        draw();
-        row.appendChild(toggle);
-        row.appendChild(detail);
-    },
-
-    updateUneven() {
-        const players = this.entries
-            .map((entry, index) => ({ id: `P${index + 1}`, contribution: Number(entry.amount) || 0, folded: entry.folded }))
-            .filter(p => p.contribution > 0);
-
-        const pots = PotCalculator.layers(players);
-        const returns = PotCalculator.uncalledReturns(players);
-
-        const host = document.getElementById("unevenPots");
-        const empty = document.getElementById("unevenEmpty");
-        host.innerHTML = "";
-
-        if (pots.length === 0 && returns.length === 0) {
-            empty.hidden = false;
-            empty.textContent = players.length === 0
-                ? "Enter what each player put in."
-                : "Nobody left who can win — un-fold whoever should take it.";
-            return;
-        }
-        empty.hidden = true;
-
-        const addRow = (label, amount, who, className, chopWays) => {
-            const row = document.createElement("div");
-            row.className = `unevenPot ${className || ""}`;
-            const name = document.createElement("span");
-            name.className = "unevenPotLabel";
-            name.textContent = label;
-            const value = document.createElement("span");
-            value.className = "unevenPotAmount";
-            value.textContent = Money.format(amount);
-            const eligible = document.createElement("span");
-            eligible.className = "unevenPotWho";
-            eligible.textContent = who;
-            row.appendChild(name);
-            row.appendChild(value);
-            row.appendChild(eligible);
-            host.appendChild(row);
-
-            // Two players tying for a side pot is ordinary, and working out each one's
-            // share meant copying the amount into the other mode by hand — retyping a
-            // number the screen had just worked out, which is a transcription error
-            // waiting to happen with money on it. The chop happens here instead.
-            //
-            // Only offered where it means something: a pot with at least two people
-            // who can win it. Not the uncalled row, which goes back to one player, and
-            // not the total.
-            if (chopWays >= 2) this.addChopControl(row, amount, chopWays);
-        };
-
-        pots.forEach(pot => addRow(pot.label, pot.amount, pot.eligible.join(", "), "", pot.eligible.length));
-        returns.forEach(ret => addRow("Uncalled", ret.amount, `back to ${ret.id}`, "unevenPotReturn"));
-
-        const total = players.reduce((sum, p) => sum + p.contribution, 0);
-        addRow("On the table", Money.round(total), "", "unevenPotTotal");
-    },
-
-    update() {
-        if (this.mode === "uneven") {
-            this.updateUneven();
-            return;
-        }
-
-        const potValue = Number(this.potInput.value);
-        const pot = Number.isNaN(potValue) ? 0 : potValue;
-        this.clearPotBtn.hidden = this.potInput.value === "";
-
-        const result = SplitCalculator.split(pot, this.ways, this.chip);
-
-        document.getElementById("splitResultLabel").textContent =
-            `Each of ${result.players} players gets`;
-        document.getElementById("splitResultAmount").textContent = Money.format(result.each);
-
-        const oddNote = document.getElementById("splitOddNote");
-        if (result.valid && result.oddChips > 0) {
-            oddNote.textContent = result.oddChips === 1
-                ? `plus one odd ${Money.format(result.chip)} chip to the first player left of the button`
-                : `plus ${result.oddChips} odd ${Money.format(result.chip)} chips — one each to the ` +
-                  `first ${result.oddChips} players left of the button`;
-            oddNote.hidden = false;
-        } else {
-            oddNote.hidden = true;
-        }
-
-        const dustNote = document.getElementById("splitDustNote");
-        if (result.valid && result.dust > 0) {
-            dustNote.textContent =
-                `${Money.format(result.dust)} doesn't divide into ${Money.format(result.chip)} chips — ` +
-                `pick a smaller denomination.`;
-            dustNote.hidden = false;
-        } else {
-            dustNote.hidden = true;
-        }
-
-        document.getElementById("splitResult").classList.toggle("hasAmount", result.valid && result.each > 0);
-    },
-};
-
-document.addEventListener("DOMContentLoaded", () => QuickSplit.mount());

JoshHeaps.Net/wwwroot/js/casino/holdem/seatMenu.js

@@ -1,178 +0,0 @@
-// The long-press menu on a seat. Everything a dealer does to one player mid-hand,
-// one press and one tap away, without opening the full editor and without hunting
-// for whose turn it is in the action bar.
-const SeatMenu = {
-    state: null,
-    hooks: null,
-    seatIndex: null,
-
-    mode: null,
-
-    open(state, hooks, seatIndex) {
-        this.state = state;
-        this.hooks = hooks;
-        this.seatIndex = seatIndex;
-        // Always the action list, never whatever the sheet was showing when it last
-        // closed — a seat menu that opens on a list of chairs is a menu that lost the
-        // dealer's place.
-        this.mode = null;
-        this.render();
-        document.getElementById("seatMenuOverlay").hidden = false;
-    },
-
-    close() {
-        document.getElementById("seatMenuOverlay").hidden = true;
-    },
-
-    // Only the actions that make sense for this seat right now — a folded player has
-    // nothing to go all-in with, and an empty chair has nothing to fold.
-    actionsFor(player, index) {
-        const actions = [];
-        const dealtIn = player.inHand;
-        const live = dealtIn && !player.folded;
-
-        if (live) {
-            actions.push({ label: "Fold", className: "menuDanger", run: () => this.hooks.fold(index) });
-            actions.push({ label: "All-in", className: "menuAccent", run: () => this.hooks.allIn(index) });
-        } else if (dealtIn && player.folded) {
-            actions.push({ label: "Un-fold", run: () => this.hooks.unfold(index) });
-        }
-
-        // The most common interruption in a cash game, and until now it meant opening
-        // the editor and retyping a stack from memory.
-        actions.push({ label: "Add chips…", run: () => this.hooks.addChips(index) });
-
-        actions.push({
-            label: dealtIn ? "Sit out" : "Deal in",
-            run: () => this.hooks.toggleDealtIn(index),
-        });
-
-        // An empty chair with people waiting: the dealer taps the chair somebody is
-        // about to sit in, which is what their hand is doing anyway. Only the front of
-        // the queue is offered, for the same reason the panel only offers them — a list
-        // that isn't kept in order is just a pile of names.
-        const waiting = (this.state.waitingList || [])[0];
-        const emptyChair = !HoldemState.seatInPlay(player);
-        if (waiting && emptyChair) {
-            actions.push({
-                label: `Seat ${waiting.name}`,
-                className: "menuAccent",
-                run: () => this.hooks.seatWaiting(waiting.id, index),
-            });
-        }
-
-        // Leaving for the night, which is a different thing from sitting out a hand:
-        // the chips go back over the rail and the chair opens. Offered only for a seat
-        // that has somebody in it, since an empty chair has nobody to pay.
-        if (HoldemState.seatInPlay(player)) {
-            actions.push({ label: "Cash out…", run: () => this.hooks.cashOut(index) });
-        }
-
-        if (!this.state.dedicatedDealer && index !== this.state.dealerSeatIndex) {
-            actions.push({ label: "Give the button", run: () => this.hooks.makeDealer(index) });
-        }
-
-        // Naming a blind by hand. Only offered while nothing but the blinds are in —
-        // once somebody has called, moving a blind would mean unpicking a bet that
-        // has already been answered, and that's a decision for the dealer's mouth,
-        // not a menu item. Which blind a seat already has is shown rather than
-        // offered again.
-        if (dealtIn && Betting.onlyBlindsIn(this.state)) {
-            const blinds = HoldemState.getBlindSeats(this.state);
-            if (blinds.sbIndex !== index) {
-                actions.push({ label: "Make small blind", run: () => this.hooks.assignBlind(index, "sb") });
-            }
-            if (blinds.bbIndex !== index) {
-                actions.push({ label: "Make big blind", run: () => this.hooks.assignBlind(index, "bb") });
-            }
-            if (this.state.blindOverride) {
-                actions.push({ label: "Blinds follow the button again", run: () => this.hooks.clearBlindOverride() });
-            }
-        }
-
-        // Changing chairs was drag-and-drop only, and HTML5 drag events are never
-        // generated from a touch screen — so on the device this tool is mostly used on,
-        // the "drag to swap seats" the hint advertised did nothing at all. This is the
-        // same move, by the route a thumb can actually take.
-        if (this.state.seats.length > 1) {
-            actions.push({ label: "Move to…", run: () => this.openMovePicker() });
-        }
-
-        actions.push({ label: "Edit seat…", run: () => this.hooks.editSeat(index) });
-        return actions;
-    },
-
-    // The chairs this player could move to. Every other chair: swapping into an empty
-    // one is how a player moves, and swapping with an occupied one is two players
-    // changing places, which is the other half of the same job.
-    destinationsFor(index) {
-        return this.state.seats
-            .map((player, seat) => ({ player, seat }))
-            .filter(entry => entry.seat !== index);
-    },
-
-    openMovePicker() {
-        this.mode = "move";
-        this.render();
-    },
-
-    render() {
-        const player = this.state.seats[this.seatIndex];
-        const title = document.getElementById("seatMenuTitle");
-        const subtitle = document.getElementById("seatMenuSubtitle");
-        const list = document.getElementById("seatMenuActions");
-        list.innerHTML = "";
-
-        if (this.mode === "move") {
-            title.textContent = `Move ${HoldemState.displayName(player, this.seatIndex)} to…`;
-            subtitle.textContent = "Their chips, cards and bet go with them. The button and the blinds stay on the chair.";
-            this.destinationsFor(this.seatIndex).forEach(({ player: other, seat }) => {
-                const btn = document.createElement("button");
-                btn.type = "button";
-                btn.className = "seatMenuBtn";
-                // displayName falls back to "Seat 5" for a chair with nobody in it,
-                // which reads as "Seat 5 — Seat 5". An empty chair says it's empty.
-                const named = (other.name || "").trim();
-                btn.textContent = named ? `Seat ${seat + 1} — ${named}` : `Seat ${seat + 1} — empty`;
-                btn.addEventListener("click", () => {
-                    const from = this.seatIndex;
-                    this.close();
-                    this.hooks.swapSeats(from, seat);
-                });
-                list.appendChild(btn);
-            });
-            return;
-        }
-
-        title.textContent = HoldemState.displayName(player, this.seatIndex);
-
-        const stack = Betting.stackOf(this.state, player);
-        const owed = Betting.toCall(this.state, player);
-        const bits = [];
-        if (stack > 0) bits.push(`${Money.format(stack)} behind`);
-        if (owed > 0) bits.push(`${Money.format(owed)} to call`);
-        subtitle.textContent = bits.join(" · ");
-
-        this.actionsFor(player, this.seatIndex).forEach(action => {
-            const btn = document.createElement("button");
-            btn.type = "button";
-            btn.className = `seatMenuBtn ${action.className || ""}`;
-            btn.textContent = action.label;
-            btn.addEventListener("click", () => {
-                // "Move to…" stays on the sheet and swaps it for the seat list; every
-                // other action is the end of the interaction.
-                if (action.label === "Move to…") {
-                    action.run();
-                    return;
-                }
-                this.close();
-                action.run();
-            });
-            list.appendChild(btn);
-        });
-    },
-};
-
-if (typeof module !== "undefined" && module.exports) {
-    module.exports = SeatMenu;
-}

JoshHeaps.Net/wwwroot/js/casino/holdem/settleUp.js

@@ -1,66 +0,0 @@
-// Who hands cash to whom at the end of the night.
-//
-// The standings panel already works out what everyone is up or down. It then stopped,
-// which leaves the dealer with six signed numbers at 2am and the actual job still to
-// do: turning them into payments. That's the step people get wrong — not the poker.
-//
-// Everything is done in cents. A settlement that has to come out exactly right is the
-// last place to let a float land on 41.99999999.
-const SettleUp = {
-    // Largest debt against largest win, repeatedly. It's greedy rather than optimal,
-    // and for this problem that's the right trade: finding the true minimum number of
-    // transfers is NP-hard, while this is guaranteed to need at most one payment fewer
-    // than there are people, and each payment it does emit clears somebody out of the
-    // list entirely. A dealer wants a short list they can read down, not a proof.
-    //
-    // Payers are the outer loop so that everything one person owes is printed together
-    // — the list is read out loud, one player at a time.
-    plan(standings) {
-        const owed = [];
-        const owing = [];
-
-        (standings || []).forEach(row => {
-            const cents = Money.toCents(row.cashPosition);
-            if (cents > 0) owed.push({ name: row.name, cents });
-            else if (cents < 0) owing.push({ name: row.name, cents: -cents });
-        });
-
-        owed.sort((a, b) => b.cents - a.cents || a.name.localeCompare(b.name));
-        owing.sort((a, b) => b.cents - a.cents || a.name.localeCompare(b.name));
-
-        const payments = [];
-        let creditor = 0;
-        owing.forEach(payer => {
-            while (payer.cents > 0 && creditor < owed.length) {
-                const taker = owed[creditor];
-                const amount = Math.min(payer.cents, taker.cents);
-                payments.push({ from: payer.name, to: taker.name, amount: Money.fromCents(amount) });
-                payer.cents -= amount;
-                taker.cents -= amount;
-                if (taker.cents === 0) creditor++;
-            }
-        });
-
-        // What's left over when the chips on the table don't match the cash that came
-        // in. It is never a rounding artifact — the arithmetic is integer cents — so it
-        // is always the thing the bank check is already warning about: a rebuy nobody
-        // wrote down, or a miscount. Reported rather than quietly spread across the
-        // payments, because inventing a transfer to make the columns agree is how a
-        // real person ends up short.
-        const unpaid = Money.fromCents(owed.reduce((sum, row) => sum + row.cents, 0));
-        const unspent = Money.fromCents(owing.reduce((sum, row) => sum + row.cents, 0));
-
-        return {
-            payments,
-            // Only one of these can be non-zero: either there are more chips than cash
-            // or less, never both.
-            shortBy: unpaid,
-            overBy: unspent,
-            balanced: unpaid === 0 && unspent === 0,
-        };
-    },
-};
-
-if (typeof module !== "undefined" && module.exports) {
-    module.exports = SettleUp;
-}

JoshHeaps.Net/wwwroot/js/casino/holdem/shortcuts.js

@@ -1,97 +0,0 @@
-// Keyboard control for a dealer running this on a laptop.
-//
-// The phone has gestures; the desktop had a mouse and nothing else. These are the
-// same actions the bar already offers, reachable without moving a hand to the
-// trackpad between every decision — which is the whole point when the bar is being
-// tapped thirty times a hand.
-const Shortcuts = {
-    // Deliberately single letters with no modifier: a dealer's spare hand rests on
-    // the keyboard, and a chord is slower than reaching for the button would be.
-    KEYS: {
-        f: "fold",
-        c: "checkOrCall",
-        r: "raise",
-        a: "allIn",
-        " ": "advance",
-        enter: "advance",
-        u: "undo",
-        escape: "cancel",
-    },
-
-    // What each one does, in a dealer's words, for the legend in the sidebar.
-    //
-    // Lives beside KEYS because the two must not drift: F, C and R are printed on the
-    // buttons they drive, but A and U were on nothing at all — a dealer who learned
-    // the first three from the bar had no way to find out the other two existed. A
-    // shortcut with no line here is a shortcut nobody can find, and there's a test
-    // that says so.
-    LEGEND: [
-        { keys: ["F"], action: "fold", what: "Fold" },
-        { keys: ["C"], action: "checkOrCall", what: "Check, or call the bet" },
-        { keys: ["R"], action: "raise", what: "Open the amount pad to bet or raise" },
-        { keys: ["A"], action: "allIn", what: "Put this player all-in" },
-        { keys: ["U"], action: "undo", what: "Take back the last action" },
-        { keys: ["Space", "Enter"], action: "advance", what: "Deal, or move to the next street" },
-        { keys: ["Esc"], action: "cancel", what: "Close the amount pad without betting" },
-    ],
-
-    mount(handlers) {
-        this.handlers = handlers;
-        document.addEventListener("keydown", e => this.onKey(e));
-    },
-
-    // Nothing fires while the dealer is typing a name, an amount, or a note — the
-    // "c" in "Cass" must not fold the table.
-    isTyping() {
-        const el = document.activeElement;
-        if (!el) return false;
-        const tag = el.tagName;
-        return tag === "INPUT" || tag === "TEXTAREA" || tag === "SELECT" || el.isContentEditable;
-    },
-
-    // An overlay owns the keyboard while it's up. Asking the document which overlays
-    // are open, rather than listing them, means a sheet added later can't quietly
-    // start letting "f" fold the table behind it — the same reason Modal watches for
-    // them instead of being told about each one.
-    overlayOpen() {
-        return [...document.querySelectorAll('[id$="Overlay"]')].some(el => !el.hidden);
-    },
-
-    // Enter and Space are how a keyboard presses the control it is already sitting on.
-    // Claiming them for "advance" didn't just block that press — it ran a different
-    // action instead. Measured: Tab to Resolve Pot, press Enter, and the table dealt
-    // the next hand. Space on the same button worked, because "advance" happened to
-    // decline that time and the browser's own activation got through. A control that
-    // does something else every other press is worse than one that does nothing.
-    //
-    // Only these two keys are handed back. The letter shortcuts stay live with a
-    // button focused, because a button does nothing with "f" and the dealer's hand
-    // shouldn't have to leave them.
-    focusedControlOwnsKey(key) {
-        if (key !== "enter" && key !== " ") return false;
-        const el = document.activeElement;
-        return !!(el && el.matches && el.matches('button, [role="button"], a[href], summary'));
-    },
-
-    onKey(e) {
-        if (e.metaKey || e.ctrlKey || e.altKey) return;
-
-        const key = e.key.length === 1 ? e.key.toLowerCase() : e.key.toLowerCase();
-        const action = this.KEYS[key];
-        if (!action) return;
-
-        if (this.focusedControlOwnsKey(key)) return;
-
-        // Escape is the exception: it should still close the raise pad even if focus
-        // happens to be sitting in its amount field.
-        if (this.isTyping() && !(action === "cancel")) return;
-        if (this.overlayOpen()) return;
-
-        const handled = this.handlers[action] && this.handlers[action]();
-        if (handled) e.preventDefault();
-    },
-};
-
-if (typeof module !== "undefined" && module.exports) {
-    module.exports = Shortcuts;
-}

JoshHeaps.Net/wwwroot/js/casino/holdem/splitCalculator.js

@@ -1,53 +0,0 @@
-// Pure math for chopping one pot between tied players. No DOM.
-//
-// A dealer can't push half a chip across the felt, so this works in whole chips of
-// whatever the smallest denomination in play is: everyone gets the same stack, and
-// whatever won't divide is called out separately as odd chips. House rule for those
-// is that they go to the first player left of the button, one at a time.
-const SplitCalculator = {
-    // Everything is done in cents to keep 0.1 + 0.2 out of a payout.
-    toCents(amount) {
-        return Money.toCents(amount);
-    },
-
-    split(potAmount, ways, chipAmount) {
-        const potCents = this.toCents(potAmount);
-        const chipCents = Math.max(1, this.toCents(chipAmount));
-        const players = Math.max(1, Math.floor(Number(ways) || 0));
-
-        if (potCents <= 0) {
-            return { valid: false, each: 0, oddChips: 0, chip: chipCents / 100, dust: 0, players };
-        }
-
-        const wholeChips = Math.floor(potCents / chipCents);
-        // Left over when the pot itself isn't a whole number of the smallest chip —
-        // usually means the dealer picked the wrong denomination, so it's surfaced
-        // rather than silently rolled into someone's stack.
-        const dustCents = potCents - wholeChips * chipCents;
-
-        const chipsEach = Math.floor(wholeChips / players);
-        const oddChips = wholeChips - chipsEach * players;
-
-        return {
-            valid: true,
-            players,
-            each: (chipsEach * chipCents) / 100,
-            oddChips,
-            chip: chipCents / 100,
-            dust: dustCents / 100,
-        };
-    },
-
-    // Sanity check for the UI: what the split actually hands out has to equal the pot.
-    accountedFor(result) {
-        return Money.fromCents(
-            Money.toCents(result.each) * result.players +
-            Money.toCents(result.chip) * result.oddChips +
-            Money.toCents(result.dust)
-        );
-    },
-};
-
-if (typeof module !== "undefined" && module.exports) {
-    module.exports = SplitCalculator;
-}

native/chess_engine/include/chess_engine.h

@@ -103,13 +103,9 @@ CHESS_API void          CHESS_CALL trainer_destroy(TrainerHandle trainer);
 /* Record one played position (post-move FEN) into the accumulator. */
 CHESS_API void CHESS_CALL trainer_record(TrainerHandle trainer, const char* fen);
 
-/* Apply a finished game's outcome to the global weights and save. Each touched cell (a piece
- * on a square, or a feature) tracks a presence-weighted running average of the game's
- * "advantage" — the game's outcome (scaled by `weight`, e.g. 0.5 for a material-imbalance
- * draw) minus how much of that outcome the winner's average material edge already explains —
- * so mg/eg/featW end up as a fractional win-rate (percent of games won with that piece there,
- * minus percent lost), not an unbounded plus/minus tally, and a piece doesn't get credit
- * merely for existing on the winning side of a material blowout. winner: 0 = white, 1 = black. */
+/* Apply a finished game's outcome to the global weights and save: rewards the winner's
+ * occupied squares / features and punishes the loser's, scaled by `weight` (e.g. 0.5 for a
+ * material-imbalance draw). winner: 0 = white, 1 = black. */
 CHESS_API void CHESS_CALL trainer_apply(TrainerHandle trainer, int winner, double weight);
 
 #ifdef __cplusplus

native/chess_engine/src/chess_engine.cpp

@@ -26,7 +26,6 @@
 #include <cstdlib>
 #include <cstring>
 #include <fstream>
-#include <iomanip>
 #include <mutex>
 #include <new>
 #include <string>
@@ -116,25 +115,11 @@ struct ChessEngine {
 /* The process-global learned weights: the single source of truth, loaded from disk once and
  * updated in place by training. Engine handles snapshot it at creation; the visualization
  * snapshots it on demand. Guarded by g_weightsMutex for updates/saves (eval reads its own
- * per-handle copy, so it never touches this concurrently).
- *
- * mg/eg/featW are DERIVED, not accumulated: each is always exactly OUT_SCALE * (score/visits)
- * for its cell (see trainer_apply), recomputed whenever that cell's stats change. visits is
- * the presence-weighted count of games that touched the cell (how much to trust the average);
- * score is the presence-weighted sum of each game's material-adjusted advantage (see
- * trainer_apply) — so score/visits is literally "fraction of (presence-weighted) games won
- * with this piece here, minus fraction lost," bounded to [-1,1] by construction. */
+ * per-handle copy, so it never touches this concurrently). */
 struct LearnedWeights {
     int mg[chess::PIECE_TYPE_NB][64] = {};
     int eg[chess::PIECE_TYPE_NB][64] = {};
     int featW[FEATURE_NB] = {};
-
-    double mgVisits[chess::PIECE_TYPE_NB][64] = {};
-    double mgScore [chess::PIECE_TYPE_NB][64] = {};
-    double egVisits[chess::PIECE_TYPE_NB][64] = {};
-    double egScore [chess::PIECE_TYPE_NB][64] = {};
-    double featVisits[FEATURE_NB] = {};
-    double featScore [FEATURE_NB] = {};
 };
 
 static LearnedWeights g_weights;
@@ -142,15 +127,13 @@ static std::mutex     g_weightsMutex;
 static std::string    g_weightsPath;
 
 /* Per-game training accumulator (one per learned CPU-vs-CPU game). Records, per ply, where
- * each side's pieces sat (split into midgame/endgame by phase), each side's feature
- * activations, and the white-minus-black material balance; trainer_apply turns the totals
- * into a presence-weighted update to the running per-cell averages. Squares are white-relative
+ * each side's pieces sat (split into midgame/endgame by phase) and each side's feature
+ * activations; trainer_apply turns the totals into weight nudges. Squares are white-relative
  * (black indexes sq ^ 56), so a side's tally lines up with the shared white-relative table. */
 struct Trainer {
     double mgOcc[chess::COLOR_NB][chess::PIECE_TYPE_NB][64] = {};
     double egOcc[chess::COLOR_NB][chess::PIECE_TYPE_NB][64] = {};
     double featAcc[chess::COLOR_NB][FEATURE_NB] = {};
-    double matDiffAcc = 0.0;      /* sum over plies of (white material - black material), cp */
     int    plies = 0;
 };
 
@@ -189,12 +172,9 @@ static int parse_variant(const char* options) {
 }
 
 /* On-disk format: 6*64 mg ints (PAWN..KING, squares 0..63), then 6*64 eg ints, then
- * FEATURE_NB feature ints, then the backing visits/score doubles for each (mgVisits, mgScore,
- * egVisits, egScore, featVisits, featScore) in the same shapes, all whitespace-separated. A
- * missing file or short read leaves the rest neutral (0), so an absent weights file just means
- * "train from a blank slate" — and a file written by the pre-fractional-learning format (which
- * ends after the feature ints) loads its mg/eg/featW fine and simply starts every cell's
- * visits/score history fresh from the next game that touches it. Caller holds g_weightsMutex. */
+ * FEATURE_NB feature ints, whitespace-separated. A missing file or short read leaves the
+ * rest neutral (0), so an absent weights file just means "train from a blank slate".
+ * Caller holds g_weightsMutex. */
 static void load_global_weights(const char* path) {
     g_weights = LearnedWeights{};                    /* reset to neutral before loading */
 
@@ -210,29 +190,9 @@ static void load_global_weights(const char* path) {
             if (!(f >> g_weights.eg[pt][sq])) return;
     for (int i = 0; i < FEATURE_NB; ++i)
         if (!(f >> g_weights.featW[i])) return;
-
-    for (int pt = chess::PAWN; pt <= chess::KING; ++pt)
-        for (int sq = 0; sq < 64; ++sq)
-            if (!(f >> g_weights.mgVisits[pt][sq])) return;
-    for (int pt = chess::PAWN; pt <= chess::KING; ++pt)
-        for (int sq = 0; sq < 64; ++sq)
-            if (!(f >> g_weights.mgScore[pt][sq])) return;
-    for (int pt = chess::PAWN; pt <= chess::KING; ++pt)
-        for (int sq = 0; sq < 64; ++sq)
-            if (!(f >> g_weights.egVisits[pt][sq])) return;
-    for (int pt = chess::PAWN; pt <= chess::KING; ++pt)
-        for (int sq = 0; sq < 64; ++sq)
-            if (!(f >> g_weights.egScore[pt][sq])) return;
-    for (int i = 0; i < FEATURE_NB; ++i)
-        if (!(f >> g_weights.featVisits[i])) return;
-    for (int i = 0; i < FEATURE_NB; ++i)
-        if (!(f >> g_weights.featScore[i])) return;
 }
 
-/* Persist g_weights to g_weightsPath in the format load_global_weights reads. Full round-trip
- * precision on the doubles (visits/score are running sums that keep accumulating across many
- * games, so truncating them would drift the derived mg/eg/featW over time). Caller holds the
- * lock. */
+/* Persist g_weights to g_weightsPath in the format load_global_weights reads. Caller holds the lock. */
 static void save_global_weights() {
     if (g_weightsPath.empty()) return;
     std::ofstream f(g_weightsPath);
@@ -243,18 +203,6 @@ static void save_global_weights() {
     for (int pt = chess::PAWN; pt <= chess::KING; ++pt)
         for (int sq = 0; sq < 64; ++sq) f << g_weights.eg[pt][sq] << (sq == 63 ? '\n' : ' ');
     for (int i = 0; i < FEATURE_NB; ++i) f << g_weights.featW[i] << (i == FEATURE_NB - 1 ? '\n' : ' ');
-
-    f << std::setprecision(17);
-    for (int pt = chess::PAWN; pt <= chess::KING; ++pt)
-        for (int sq = 0; sq < 64; ++sq) f << g_weights.mgVisits[pt][sq] << (sq == 63 ? '\n' : ' ');
-    for (int pt = chess::PAWN; pt <= chess::KING; ++pt)
-        for (int sq = 0; sq < 64; ++sq) f << g_weights.mgScore[pt][sq] << (sq == 63 ? '\n' : ' ');
-    for (int pt = chess::PAWN; pt <= chess::KING; ++pt)
-        for (int sq = 0; sq < 64; ++sq) f << g_weights.egVisits[pt][sq] << (sq == 63 ? '\n' : ' ');
-    for (int pt = chess::PAWN; pt <= chess::KING; ++pt)
-        for (int sq = 0; sq < 64; ++sq) f << g_weights.egScore[pt][sq] << (sq == 63 ? '\n' : ' ');
-    for (int i = 0; i < FEATURE_NB; ++i) f << g_weights.featVisits[i] << (i == FEATURE_NB - 1 ? '\n' : ' ');
-    for (int i = 0; i < FEATURE_NB; ++i) f << g_weights.featScore[i] << (i == FEATURE_NB - 1 ? '\n' : ' ');
 }
 
 /* Maps the 1..20 difficulty to a search depth. Kept modest: the search has no
@@ -434,18 +382,13 @@ static int evaluate(const chess::Position& pos) {
  * compute_features() is the single source of feature activations, used by BOTH the eval here
  * and the trainer, so the two can never disagree. Constants below are the only tunables. */
 
-/* Per-game-outcome learning constants. Squares and features both learn a presence/activation-
- * weighted AVERAGE advantage in [-1,1] (see trainer_apply) — OUT_SCALE just converts that
- * average into a centipawn-ish int for the eval/table to add directly. FEAT_SCALE normalizes
- * each feature's raw per-ply activation to a comparable magnitude before it's used as a weight
- * (so high-count mobility doesn't dwarf the small pawn-structure terms), same as before.
- * MATERIAL_ELO_SCALE is the classic centipawn-to-win-probability curve
- * (expected = 1/(1+10^(-cp/400))) used to compute how much of a result material already
- * explains, so training credits placement/features only for the part of the result that
- * material didn't already predict. */
-static constexpr int    SQ_OUT_SCALE      = 250;
-static constexpr int    FEAT_OUT_SCALE    = 500;
-static constexpr double MATERIAL_ELO_SCALE = 400.0;
+/* Per-game-outcome learning rates and clamps. Squares accumulate occupancy (plies on a
+ * square, summed); features accumulate normalized per-ply activation (averaged, divided by a
+ * nominal scale so high-magnitude mobility doesn't dwarf the small pawn-structure terms). */
+static constexpr double SQUARE_LR  = 0.5;
+static constexpr int    SQ_CLAMP   = 250;
+static constexpr double FEAT_LR    = 2.0;
+static constexpr int    FEAT_CLAMP = 500;
 static constexpr double FEAT_SCALE[FEATURE_NB] = { 4, 6, 8, 14, 2, 1, 1, 2 };
 
 /* Game phase in [0,1] from remaining non-pawn material (PeSTO weights N=B=1, R=2, Q=4; max
@@ -880,9 +823,7 @@ CHESS_API void CHESS_CALL trainer_record(TrainerHandle t, const char* fen) {
     chess::Position pos = chess::Position::from_fen(fen);
     double phase = game_phase(pos);
 
-    /* Per-square occupancy, split into midgame/endgame by phase, white-relative; and the
-     * white-minus-black material balance at this ply, used at trainer_apply time to strip
-     * "material already explains this" out of the training signal. */
+    /* Per-square occupancy, split into midgame/endgame by phase, white-relative. */
     chess::Bitboard occ = pos.pieces();
     while (occ) {
         chess::Square s  = chess::pop_lsb(occ);
@@ -892,7 +833,6 @@ CHESS_API void CHESS_CALL trainer_record(TrainerHandle t, const char* fen) {
         int relSq = (c == chess::WHITE) ? int(s) : (int(s) ^ 56);
         t->mgOcc[c][pt][relSq] += (1.0 - phase);
         t->egOcc[c][pt][relSq] += phase;
-        t->matDiffAcc += (c == chess::WHITE ? 1 : -1) * piece_value(pt);
     }
 
     /* Per-side feature activations. */
@@ -907,66 +847,34 @@ CHESS_API void CHESS_CALL trainer_record(TrainerHandle t, const char* fen) {
     t->plies++;
 }
 
-/* Applies a finished game's outcome as a presence-weighted running average per cell, instead
- * of an unbounded incremental nudge:
- *
- *   score[cell] / visits[cell]  ==  "fraction of (presence-weighted) games won with this piece
- *                                    on this square, minus fraction lost"
- *
- * `weight` is the caller's confidence in the result (1.0 for a checkmate, 0.5 for a
- * material-imbalance draw, as before). On top of that, the update is scaled by how much of the
- * result ISN'T already explained by material: `expected` is the win probability the winner's
- * average material edge over the game implies (the same centipawn->win-probability curve
- * engines use for Elo estimates); `1 - expected` is the "surprise" left over once material is
- * accounted for. A win where the winner was already up a rook the whole game is unsurprising
- * (expected ~= 1, ~no update) — the eval already knows material matters via piece_value(), so
- * square/feature tables shouldn't get credit for "a piece existed"; a win pulled off (or a draw
- * held) while materially behind is highly informative and gets a correspondingly large update.
- * This same magnitude applies to BOTH the winner's reward and the loser's punishment: by the
- * symmetry of win probabilities (P(loser wins) = 1 - P(winner wins)), the loser's own advantage
- * — actual(0) minus their expected win probability — has exactly the same magnitude, `1 -
- * expected`, just negative. */
 CHESS_API void CHESS_CALL trainer_apply(TrainerHandle t, int winner, double weight) {
-    if (!t || t->plies <= 0) return;
-
-    double avgMaterialDiff = t->matDiffAcc / t->plies;                        /* white - black, cp */
-    double winnerMaterialDiff = (winner == chess::WHITE) ? avgMaterialDiff : -avgMaterialDiff;
-    double expected = 1.0 / (1.0 + std::pow(10.0, -winnerMaterialDiff / MATERIAL_ELO_SCALE));
-    double advantageMag = weight * (1.0 - expected);
+    if (!t) return;
 
     std::lock_guard<std::mutex> lock(g_weightsMutex);
 
-    /* pass 0 = winner (positive advantage); pass 1 = loser (negative advantage). */
+    /* pass 0 = winner (reward, +1); pass 1 = loser (punish, -1). */
     for (int pass = 0; pass < 2; ++pass) {
         chess::Color side = chess::Color((pass == 0 ? winner : (winner ^ 1)) & 1);
-        double advantage = pass == 0 ? advantageMag : -advantageMag;
+        int sign = pass == 0 ? 1 : -1;
 
         for (int pt = chess::PAWN; pt <= chess::KING; ++pt)
             for (int sq = 0; sq < 64; ++sq) {
-                double mgFrac = t->mgOcc[side][pt][sq] / t->plies;   /* fraction of the game spent here, [0,1] */
-                if (mgFrac != 0.0) {
-                    g_weights.mgVisits[pt][sq] += mgFrac;
-                    g_weights.mgScore [pt][sq] += mgFrac * advantage;
-                    g_weights.mg[pt][sq] = int(std::lround(
-                        SQ_OUT_SCALE * g_weights.mgScore[pt][sq] / g_weights.mgVisits[pt][sq]));
+                if (t->mgOcc[side][pt][sq] != 0.0) {
+                    int d = sign * int(std::lround(SQUARE_LR * t->mgOcc[side][pt][sq] * weight));
+                    g_weights.mg[pt][sq] = std::clamp(g_weights.mg[pt][sq] + d, -SQ_CLAMP, SQ_CLAMP);
                 }
-                double egFrac = t->egOcc[side][pt][sq] / t->plies;
-                if (egFrac != 0.0) {
-                    g_weights.egVisits[pt][sq] += egFrac;
-                    g_weights.egScore [pt][sq] += egFrac * advantage;
-                    g_weights.eg[pt][sq] = int(std::lround(
-                        SQ_OUT_SCALE * g_weights.egScore[pt][sq] / g_weights.egVisits[pt][sq]));
+                if (t->egOcc[side][pt][sq] != 0.0) {
+                    int d = sign * int(std::lround(SQUARE_LR * t->egOcc[side][pt][sq] * weight));
+                    g_weights.eg[pt][sq] = std::clamp(g_weights.eg[pt][sq] + d, -SQ_CLAMP, SQ_CLAMP);
                 }
             }
 
-        for (int i = 0; i < FEATURE_NB; ++i) {
-            double activation = (t->featAcc[side][i] / t->plies) / FEAT_SCALE[i];  /* per-ply average, normalized */
-            if (activation == 0.0) continue;
-            g_weights.featVisits[i] += std::abs(activation);
-            g_weights.featScore [i] += activation * advantage;
-            g_weights.featW[i] = int(std::lround(
-                FEAT_OUT_SCALE * g_weights.featScore[i] / g_weights.featVisits[i]));
-        }
+        if (t->plies > 0)
+            for (int i = 0; i < FEATURE_NB; ++i) {
+                double avg = t->featAcc[side][i] / t->plies;        /* per-ply average, normalized */
+                int d = sign * int(std::lround(FEAT_LR * (avg / FEAT_SCALE[i]) * weight));
+                g_weights.featW[i] = std::clamp(g_weights.featW[i] + d, -FEAT_CLAMP, FEAT_CLAMP);
+            }
     }
 
     save_global_weights();

tests/holdem/README.md

@@ -1,98 +0,0 @@
-# Hold'em dealer tests
-
-Unit tests for the money logic behind `/Casino/TexasHoldem` — the betting engine, the
-side-pot calculator, the split calculator and the table state.
-
-```bash
-node --test tests/holdem/*.test.js
-```
-
-No install step, no `package.json`, no dependencies. The browser modules are plain
-script-tag files that each end with a `module.exports` guard, so Node can require them
-as-is; `load.js` puts them on `globalThis` under the same names they use to find each
-other in the page, in the load order from `TexasHoldem.cshtml`.
-
-## What's covered
-
-| File | Covers |
-| --- | --- |
-| `potCalculator.test.js` | Main and side pots, dead money, uncalled bets, odd-cent distribution |
-| `betting.test.js` | Blinds, street completion, raises reopening the action, all-in run-outs |
-| `state.test.js` | Button rotation, which seats post blinds, session standings |
-| `splitCalculator.test.js` | Chopped pots, odd chips, unmakeable denominations |
-| `invariants.test.js` | 1000 randomised hands per property (see below) |
-
-## The layout audit
-
-The unit tests above cover the money. `uiAudit.js` covers the thing you can only see
-in a browser: whether a dealer can actually reach every control.
-
-```bash
-node tests/holdem/runUiAudit.js          # needs Playwright and the site running
-```
-
-It checks WCAG AA contrast, touch target sizes, touch-action and tap highlights, that fields stay selectable and are large
-enough not to trigger iOS zoom, that nothing important is covered or off-screen with
-no way to scroll to it, that no grid column has collapsed to nothing, and that no
-text is painted outside its box. It runs over the table, all five overlays and Quick
-Split, at thirteen viewports from a 360px phone to a 1600px desktop and the same
-phones on their side — each viewport twice, once with a mouse and once with a thumb.
-
-That last part, and two of those checks, are newer than this paragraph claiming them.
-`runAll()` did not include the contrast check at all, and touch targets sat behind an
-opt-in flag nothing passed, so "the audit is clean" meant nine checks rather than
-eleven for a long run of rounds. Both were written and tested and simply never called.
-The mouse/thumb pair matters for the same reason: the 44px rule stands itself down
-where `hover: hover` says there is a pointer, and a headless desktop browser is a
-pointer, so a single pass had never measured a touch target at any viewport. Between
-them they found a 9px seat label at 3.39:1, a 37px-tall amount field and a 30px delete
-button on Quick Split.
-
-A check that decides it doesn't apply says so in the output rather than reporting no
-offenders, which reads identically to a pass. The same goes for the two exemptions
-that exist: a disabled control, which WCAG itself excuses, and a link inside a
-sentence, whose size is set by the line it sits in.
-
-Deliberately not in CI: the unit suite is dependency-free and runs in a second, while
-this one needs a browser and a running site. Run it after any change that adds or
-resizes a control. With no Playwright to hand, paste `uiAudit.js` into devtools and
-call `LayoutAudit.runAll()`.
-
-The contrast check is built so it cannot report a false positive: backgrounds
-composite through alpha, and where a gradient is involved every colour stop is tried
-and the most flattering one used. A finding means the text fails even under the
-reading most generous to it. Two earlier attempts at this got it wrong in both
-directions — one read only `background-color` and scored text on a gradient against
-nothing, the other treated low-alpha stops as opaque — so `uiAudit.js` is checked
-against known-answer cases before it is believed.
-
-Touch targets are measured by probing outward with `elementFromPoint` rather than by
-reading the element box, because the box lies in both directions: a small control can
-be padded out with a transparent `::after` and respond well beyond its painted size,
-and a checkbox inside a label is hit by tapping the label. The 44px rule is only
-enforced where `hover: none` says there's no mouse.
-
-It exists because these checks were being re-typed into a console every time
-something changed, and each time they only covered whatever had just been touched.
-That is how the standings table shipped with a player-name column zero pixels wide
-and kept it for two rounds.
-
-## Why the randomised suite exists
-
-Every correctness bug found in this tool so far has been shape-dependent: blinds posted
-to empty chairs, the button skipping past players, heads-up acting out of order, an
-overbet announced as a side pot. None of them show up on a full six-handed table with
-equal stacks, which is the table anyone writes a fixed example for.
-
-`invariants.test.js` deals a thousand hands across random seat counts, random empty
-chairs, random stack depths and random dealer input, and checks the things a dealer
-would notice being wrong:
-
-- chips are never created or destroyed during play
-- the pot breakdown plus the uncalled returns always equal the money that went in
-- paying the pot out settles it to the cent
-- once uncalled chips are handed back, nobody is still betting above the whole table
-- the button and both blinds always land on players who are actually in the hand
-
-The generator is seeded, so a failure reproduces from the seed printed in the message
-rather than being a flake to re-run.

tests/holdem/aimingTheBlinds.test.js

@@ -1,128 +0,0 @@
-// Saying who the blind is, before saying "cards".
-//
-// A dealer sets the table up out loud — button here, she's the small blind, he's the
-// big blind — and only then deals. The seat menu offers "Make small blind" for exactly
-// that, and it was answering by dealing the hand: betting opened, two stacks docked,
-// the action bar up and waiting on the seat after the big blind. The dealer had said
-// where the blinds go, and the tool heard "deal".
-//
-// The condition it was asking is `onlyBlindsIn`, which means "nothing has happened in
-// this hand except the blinds" — true of a hand one second old, and equally true of a
-// table in setup with no cards out and nothing committed. Those two need telling apart,
-// which is what `blindsArePosted` is for.
-const test = require("node:test");
-const { describe } = require("node:test");
-const assert = require("node:assert");
-const { Betting, HoldemState, makeTable, chipsOnTable } = require("./load");
-
-describe("before the deal", () => {
-    test("the blinds are not down, however much the table looks ready", () => {
-        const state = makeTable({ seatCount: 6, seated: [0, 1, 2, 3] });
-        assert.equal(state.bettingOpen, false);
-        // The old condition, on its own, says yes here — this is the whole bug.
-        assert.equal(Betting.onlyBlindsIn(state), true);
-        assert.equal(Betting.blindsArePosted(state), false);
-    });
-
-    test("a table straight out of setup, with nobody seated, is the same answer", () => {
-        assert.equal(Betting.blindsArePosted(HoldemState.createDefault()), false);
-    });
-
-    test("re-posting would have dealt the hand, which is why it is guarded", () => {
-        // Not a rule, a demonstration: repostBlinds ends in beginHand. Calling it in
-        // setup is the deal, and nothing about naming a blind should reach it.
-        const state = makeTable({ seatCount: 6, seated: [0, 1, 2, 3] });
-        Betting.repostBlinds(state);
-        assert.equal(state.bettingOpen, true, "chips off two stacks and the action bar up");
-        assert.notEqual(state.actingSeatIndex, null);
-    });
-
-    test("naming a blind moves a badge and no chips", () => {
-        const state = makeTable({ seatCount: 6, seated: [0, 1, 2, 3] });
-        const before = chipsOnTable(state);
-
-        // What the seat menu does: pin the override, repost only if the blinds are down.
-        state.blindOverride = { sbIndex: 3, bbIndex: 0 };
-        if (Betting.blindsArePosted(state)) Betting.repostBlinds(state);
-
-        assert.equal(state.bettingOpen, false, "still setup — the dealer hasn't dealt");
-        assert.equal(state.actingSeatIndex, null, "nobody is being asked to act");
-        assert.deepEqual(state.seats.map(p => Betting.committed(p)), [0, 0, 0, 0, 0, 0]);
-        assert.equal(chipsOnTable(state), before);
-
-        // And the badges say what the dealer just said.
-        const blinds = HoldemState.getBlindSeats(state);
-        assert.equal(blinds.sbIndex, 3);
-        assert.equal(blinds.bbIndex, 0);
-    });
-
-    test("and the hand that follows posts from where they were aimed", () => {
-        const state = makeTable({ seatCount: 6, seated: [0, 1, 2, 3], smallBlind: 1, bigBlind: 2 });
-        state.blindOverride = { sbIndex: 3, bbIndex: 0 };
-        if (Betting.blindsArePosted(state)) Betting.repostBlinds(state);
-
-        Betting.beginHand(state);
-        assert.equal(Betting.committed(state.seats[3]), 1);
-        assert.equal(Betting.committed(state.seats[0]), 2);
-    });
-
-    test("giving the button away is a marker moving too", () => {
-        const state = makeTable({ seatCount: 6, seated: [0, 1, 2, 3] });
-        const before = chipsOnTable(state);
-
-        const willRepost = Betting.blindsArePosted(state);
-        state.dealerSeatIndex = 2;
-        if (willRepost) Betting.repostBlinds(state);
-
-        assert.equal(willRepost, false);
-        assert.equal(state.bettingOpen, false);
-        assert.equal(chipsOnTable(state), before);
-    });
-});
-
-describe("once the hand is dealt", () => {
-    test("the blinds are down, and re-aiming them moves real chips", () => {
-        const state = makeTable({ seatCount: 6, seated: [0, 1, 2, 3], dealerSeatIndex: 0 });
-        const before = chipsOnTable(state);
-        Betting.beginHand(state);
-        assert.equal(Betting.blindsArePosted(state), true);
-        assert.equal(Betting.committed(state.seats[1]), 1);
-
-        state.blindOverride = { sbIndex: 3, bbIndex: 0 };
-        if (Betting.blindsArePosted(state)) Betting.repostBlinds(state);
-
-        assert.equal(Betting.committed(state.seats[1]), 0, "the old small blind got their chip back");
-        assert.equal(Betting.committed(state.seats[3]), 1);
-        assert.equal(Betting.committed(state.seats[0]), 2);
-        assert.equal(chipsOnTable(state), before, "no chips created or lost in the shuffle");
-    });
-
-    test("but not once somebody has answered them", () => {
-        const state = makeTable({ seatCount: 4, seated: [0, 1, 2, 3], dealerSeatIndex: 0 });
-        Betting.beginHand(state);
-        Betting.call(state, state.actingSeatIndex);
-        assert.equal(Betting.blindsArePosted(state), false, "there is a call to unpick now");
-    });
-
-    test("nor on a later street", () => {
-        const state = makeTable({ seatCount: 4, seated: [0, 1, 2, 3], dealerSeatIndex: 0 });
-        Betting.beginHand(state);
-        state.street = "flop";
-        assert.equal(Betting.blindsArePosted(state), false);
-    });
-
-    test("and a misdealt hand goes back to being a table in setup", () => {
-        const state = makeTable({ seatCount: 4, seated: [0, 1, 2, 3], dealerSeatIndex: 0 });
-        Betting.beginHand(state);
-        Betting.takeHandBack(state);
-        assert.equal(Betting.blindsArePosted(state), false, "nothing is posted until the dealer deals again");
-    });
-
-    test("as does a hand that has been paid out", () => {
-        const state = makeTable({ seatCount: 4, seated: [0, 1, 2, 3], dealerSeatIndex: 0 });
-        Betting.beginHand(state);
-        Betting.sweepToHandTotals(state);
-        HoldemState.startNextHand(state);
-        assert.equal(Betting.blindsArePosted(state), false);
-    });
-});

tests/holdem/allInMarker.test.js

@@ -1,98 +0,0 @@
-// Who the felt marks "ALL IN".
-//
-// The mark's whole value is that a dealer can scan the ring and see who can still be
-// bet at, so the test that matters most is the last one: the seats it marks are
-// exactly the seats the betting round refuses to ask for another chip.
-const test = require("node:test");
-const assert = require("node:assert");
-const { Betting, HoldemState, makeTable, chipsOnTable } = require("./load");
-
-test("a player who moved all-in is marked", () => {
-    const state = makeTable({ seatCount: 6, seated: [0, 1, 2, 3], stack: 100 });
-    state.seats[3].stack = 12;
-    Betting.beginHand(state);
-    Betting.allIn(state, state.actingSeatIndex);
-
-    assert.equal(Betting.isAllIn(state, state.seats[3]), true);
-    assert.equal(state.seats[3].stack, 0);
-});
-
-test("a player with chips behind is not", () => {
-    const state = makeTable({ seatCount: 6, seated: [0, 1, 2], stack: 100 });
-    Betting.beginHand(state);
-    assert.equal(Betting.isAllIn(state, state.seats[0]), false);
-    assert.equal(Betting.isAllIn(state, state.seats[1]), false);
-});
-
-test("a busted player who was dealt in but has put nothing in is not", () => {
-    // An empty stack alone isn't all-in — it's someone who shouldn't have been dealt
-    // in. Calling that "ALL IN" on the felt would be a lie about a live pot.
-    const state = makeTable({ seatCount: 4, seated: [0, 1, 2], stack: 100 });
-    state.seats[2].stack = 0;
-    assert.equal(Betting.isAllIn(state, state.seats[2]), false);
-});
-
-test("a folded player with an empty stack is not", () => {
-    const state = makeTable({ seatCount: 4, seated: [0, 1, 2], stack: 100 });
-    state.seats[1].committed = 5;
-    state.seats[1].stack = 0;
-    state.seats[1].folded = true;
-    assert.equal(Betting.isAllIn(state, state.seats[1]), false);
-});
-
-test("an empty chair is not", () => {
-    const state = makeTable({ seatCount: 6, seated: [0, 1], stack: 100 });
-    assert.equal(Betting.isAllIn(state, state.seats[4]), false);
-});
-
-test("a seat with no stack of its own falls back to the table's and isn't marked", () => {
-    const state = makeTable({ seatCount: 4, seated: [0, 1, 2], stack: 100 });
-    state.defaultStack = 200;
-    state.seats[2].stack = null;
-    state.seats[2].committed = 10;
-    assert.equal(Betting.isAllIn(state, state.seats[2]), false);
-});
-
-test("the seats marked are exactly the ones the action passes over", () => {
-    const state = makeTable({ seatCount: 6, seated: [0, 1, 2, 3], stack: 100 });
-    state.seats[1].stack = 8;
-    state.seats[3].stack = 30;
-    Betting.beginHand(state);
-
-    // Everyone in, two of them for less than the others can cover.
-    for (let step = 0; step < 4; step++) Betting.allIn(state, state.actingSeatIndex);
-
-    const marked = state.seats
-        .map((player, index) => (Betting.isAllIn(state, player) ? index : null))
-        .filter(index => index !== null);
-    const skipped = state.seats
-        .map((player, index) =>
-            player.inHand && !player.folded && Betting.nextToAct(state, index - 1) !== index ? index : null)
-        .filter(index => index !== null);
-
-    assert.deepEqual(marked, skipped);
-    assert.ok(marked.length > 0, "the scenario should actually produce all-in players");
-});
-
-test("nobody is marked once the next hand starts", () => {
-    const state = makeTable({ seatCount: 4, seated: [0, 1, 2], stack: 100 });
-    state.seats[2].stack = 5;
-    Betting.beginHand(state);
-    Betting.allIn(state, state.actingSeatIndex);
-    assert.ok(state.seats.some(player => Betting.isAllIn(state, player)));
-
-    // The short stack got there by winning nothing; give them chips back the way a
-    // dealer would before the next deal.
-    HoldemState.startNextHand(state);
-    state.seats[2].stack = 50;
-    assert.equal(state.seats.filter(player => Betting.isAllIn(state, player)).length, 0);
-});
-
-test("marking nobody doesn't move a chip", () => {
-    const state = makeTable({ seatCount: 6, seated: [0, 1, 2, 3], stack: 100 });
-    state.seats[3].stack = 12;
-    Betting.beginHand(state);
-    const before = chipsOnTable(state);
-    state.seats.forEach(player => Betting.isAllIn(state, player));
-    assert.equal(chipsOnTable(state), before);
-});

tests/holdem/assumedContributions.test.js

@@ -1,175 +0,0 @@
-// Chips the pot was priced with that nobody actually paid.
-//
-// There are two ways a contribution gets into this tool. Tapping the action moves
-// chips: the bet leaves the stack, sits in front of the player, and is swept into their
-// hand total at the end of the street. The other is the "without live betting" panel —
-// a base pot amount, or chips counted out on a seat — where the dealer is recording a
-// hand they are watching rather than driving, and nothing ever leaves a stack.
-//
-// The pot wizard prices both the same way and awarding it credits the winner, so in
-// that second mode the table simply grew.
-const test = require("node:test");
-const { describe } = require("node:test");
-const assert = require("node:assert");
-const { Money, Betting, HoldemState, chipsOnTable } = require("./load");
-
-const basePotTable = (base = 50, stack = 200) => {
-    const state = HoldemState.createDefault();
-    HoldemState.resizeSeats(state, 4);
-    state.basePotAmount = base;
-    ["Ann", "Ben", "Cal"].forEach((name, i) => {
-        state.seats[i].name = name;
-        state.seats[i].inHand = true;
-        state.seats[i].stack = stack;
-        state.seats[i].buyIns = stack;
-    });
-    return state;
-};
-
-const pricedPot = (state) => state.seats.reduce(
-    (sum, p) => sum + HoldemState.computeContribution(p, state.chipLegend, state.basePotAmount), 0);
-
-describe("what nobody paid", () => {
-    test("comes off the stacks that owe it", () => {
-        const state = basePotTable();
-        const collected = Betting.collectAssumedContributions(state);
-        assert.equal(collected.total, 150);
-        assert.deepEqual(collected.taken.map(row => row.name), ["Ann", "Ben", "Cal"]);
-        assert.deepEqual(state.seats.slice(0, 3).map(p => p.stack), [150, 150, 150]);
-    });
-
-    test("and lands where the rest of the tool looks for chips in the middle", () => {
-        const state = basePotTable();
-        Betting.collectAssumedContributions(state);
-        assert.deepEqual(state.seats.slice(0, 3).map(p => p.amountOverride), [50, 50, 50]);
-        assert.equal(HoldemState.unresolvedContributions(state), 150);
-    });
-
-    test("chips counted out on a seat are money too", () => {
-        const state = basePotTable(0);
-        state.seats[0].chipCounts = { red: 4 };    // four $5 chips
-        const collected = Betting.collectAssumedContributions(state);
-        assert.equal(collected.total, 20);
-        assert.equal(state.seats[0].stack, 180);
-    });
-});
-
-describe("what has already been paid", () => {
-    test("a live bet is left exactly alone", () => {
-        const state = basePotTable(0);
-        state.smallBlind = 5;
-        state.bigBlind = 10;
-        Betting.beginHand(state);
-        const before = state.seats.map(p => Betting.stackOf(state, p));
-
-        const collected = Betting.collectAssumedContributions(state);
-        assert.equal(collected.total, 0, "the blinds are already off their stacks");
-        assert.deepEqual(state.seats.map(p => Betting.stackOf(state, p)), before);
-    });
-
-    test("nor is a swept street taken a second time", () => {
-        const state = basePotTable(0);
-        state.smallBlind = 5;
-        state.bigBlind = 10;
-        Betting.beginHand(state);
-        Betting.sweepToHandTotals(state);
-        const before = state.seats.map(p => Betting.stackOf(state, p));
-
-        assert.equal(Betting.collectAssumedContributions(state).total, 0);
-        assert.deepEqual(state.seats.map(p => Betting.stackOf(state, p)), before);
-    });
-
-    test("a base pot on top of a live bet only collects the difference", () => {
-        // The base pot says "assume everyone is in for fifty". Somebody who has already
-        // put twenty in owes thirty of it, not fifty.
-        const state = basePotTable(50);
-        state.seats[0].committed = 20;
-        state.seats[0].stack = 180;
-        const collected = Betting.collectAssumedContributions(state);
-        const ann = collected.taken.find(row => row.name === "Ann");
-        assert.equal(ann.amount, 30);
-        assert.equal(state.seats[0].stack, 150, "fifty in the middle, either way");
-    });
-});
-
-describe("what it will not do", () => {
-    test("take more than a player is holding", () => {
-        const state = basePotTable(50);
-        state.seats[1].stack = 20;
-        Betting.collectAssumedContributions(state);
-        assert.equal(state.seats[1].stack, 0, "all of it, and no further");
-        assert.equal(state.seats[1].amountOverride, 20);
-    });
-
-    test("touch an empty chair", () => {
-        const state = basePotTable();
-        const before = { ...state.seats[3] };
-        Betting.collectAssumedContributions(state);
-        assert.equal(state.seats[3].stack, before.stack);
-        assert.equal(state.seats[3].amountOverride, before.amountOverride);
-    });
-
-    test("or a seat that isn't in the hand", () => {
-        // The base pot stands in for "everyone put the same in", and somebody sitting
-        // out did not.
-        const state = basePotTable();
-        state.seats[2].inHand = false;
-        const collected = Betting.collectAssumedContributions(state);
-        assert.deepEqual(collected.taken.map(row => row.name), ["Ann", "Ben"]);
-        assert.equal(state.seats[2].stack, 200);
-    });
-});
-
-describe("the whole hand", () => {
-    test("conserves the chips on the table, which it did not before", () => {
-        const state = basePotTable();
-        const total = chipsOnTable(state);
-        const pot = pricedPot(state);
-
-        Betting.collectAssumedContributions(state);
-        Betting.creditWinnings(state, [{ id: state.seats[0].id, label: "Ann", amount: pot }]);
-        HoldemState.startNextHand(state);
-
-        assert.equal(chipsOnTable(state), total, "six hundred before, six hundred after");
-        assert.deepEqual(state.seats.slice(0, 3).map(p => p.stack), [300, 150, 150]);
-        assert.equal(HoldemState.bankReconciliation(state).balanced, true);
-    });
-
-    test("and the bank check stays balanced all the way through", () => {
-        const state = basePotTable();
-        assert.equal(HoldemState.bankReconciliation(state).balanced, true);
-        Betting.collectAssumedContributions(state);
-        assert.equal(HoldemState.bankReconciliation(state).balanced, true, "chips are in the middle, not gone");
-        Betting.creditWinnings(state, [{ id: state.seats[0].id, label: "Ann", amount: 150 }]);
-        HoldemState.startNextHand(state);
-        assert.equal(HoldemState.bankReconciliation(state).balanced, true);
-    });
-
-    test("a live-betting hand is unchanged by any of this", () => {
-        const state = basePotTable(0);
-        state.smallBlind = 5;
-        state.bigBlind = 10;
-        const total = chipsOnTable(state);
-        Betting.beginHand(state);
-        [3, 0, 1, 2].forEach(() => { if (state.actingSeatIndex !== null) Betting.call(state, state.actingSeatIndex); });
-        Betting.sweepToHandTotals(state);
-        const pot = HoldemState.unresolvedContributions(state);
-
-        Betting.collectAssumedContributions(state);
-        Betting.creditWinnings(state, [{ id: state.seats[0].id, label: "Ann", amount: pot }]);
-        HoldemState.startNextHand(state);
-
-        assert.equal(chipsOnTable(state), total);
-        assert.equal(HoldemState.bankReconciliation(state).balanced, true);
-    });
-
-    test("collecting twice takes nothing the second time", () => {
-        // The pot wizard can be opened, cancelled and opened again.
-        const state = basePotTable();
-        Betting.collectAssumedContributions(state);
-        const stacks = state.seats.map(p => p.stack);
-        const again = Betting.collectAssumedContributions(state);
-        assert.equal(again.total, 0);
-        assert.deepEqual(state.seats.map(p => p.stack), stacks);
-    });
-});

tests/holdem/auditContrast.test.js

@@ -1,108 +0,0 @@
-// The sums the contrast check runs on, tested away from a browser.
-//
-// The check itself needs a page to look at, but the arithmetic underneath it doesn't —
-// and the arithmetic is the part that decides whether a real fault is reported or
-// waved through. Faded text used to be filed as "not checked" rather than measured;
-// this is the compositing that replaced that.
-const test = require("node:test");
-const { describe } = require("node:test");
-const assert = require("node:assert");
-const LayoutAudit = require("./uiAudit");
-
-const WHITE = { r: 255, g: 255, b: 255, a: 1 };
-const BLACK = { r: 0, g: 0, b: 0, a: 1 };
-const PAGE = { r: 28, g: 28, b: 28, a: 1 };      // the felt page behind everything
-const PUCK = { r: 44, g: 44, b: 44, a: 1 };      // a seat's own background
-
-describe("the ratio itself", () => {
-    test("black on white is the full 21:1, either way round", () => {
-        assert.ok(Math.abs(LayoutAudit.contrastRatio(BLACK, WHITE) - 21) < 0.01);
-        assert.ok(Math.abs(LayoutAudit.contrastRatio(WHITE, BLACK) - 21) < 0.01);
-    });
-
-    test("a colour against itself is 1:1", () => {
-        assert.ok(Math.abs(LayoutAudit.contrastRatio(PUCK, PUCK) - 1) < 0.001);
-    });
-});
-
-describe("text on a box that is being faded", () => {
-    // opacity on a box fades the box and its text together onto whatever is behind
-    // it — so a dimmed seat is not grey text on a dark puck, it is a faded puck and
-    // faded text both landing on the page.
-    const fade = alpha => ({ alpha, behind: PAGE });
-
-    test("at full strength nothing is composited", () => {
-        const painted = LayoutAudit.asPainted(WHITE, PUCK, { alpha: 1, behind: PAGE });
-        assert.deepEqual(painted.fg, WHITE);
-        assert.deepEqual(painted.bg, PUCK);
-    });
-
-    test("fading moves both the text and its background, not just the text", () => {
-        const painted = LayoutAudit.asPainted(WHITE, PUCK, fade(0.7));
-        assert.ok(painted.fg.r < WHITE.r, "the text dims");
-        assert.ok(painted.bg.r < PUCK.r, "and so does what it sits on");
-        assert.ok(painted.bg.r > PAGE.r, "but not all the way to the page");
-    });
-
-    test("which is what stops a fade being reported as a fault it isn't", () => {
-        // Dimming light text on a dark puck over a dark page costs contrast, but far
-        // less than measuring the faded text against the *unfaded* puck would claim.
-        const honest = LayoutAudit.asPainted(WHITE, PUCK, fade(0.7));
-        const wrong = { fg: LayoutAudit.over({ ...WHITE, a: 0.7 }, PUCK), bg: PUCK };
-        assert.ok(LayoutAudit.contrastRatio(honest.fg, honest.bg) >
-            LayoutAudit.contrastRatio(wrong.fg, wrong.bg));
-    });
-
-    test("a fade all the way out lands everything on the page behind", () => {
-        const painted = LayoutAudit.asPainted(WHITE, PUCK, fade(0));
-        assert.deepEqual(painted.fg, PAGE);
-        assert.deepEqual(painted.bg, PAGE);
-    });
-
-    test("with nothing known to be behind it, the fade is left alone", () => {
-        // Better to measure the unfaded pair than to invent a backdrop.
-        const painted = LayoutAudit.asPainted(WHITE, PUCK, { alpha: 0.5, behind: null });
-        assert.deepEqual(painted.fg, WHITE);
-        assert.deepEqual(painted.bg, PUCK);
-    });
-});
-
-describe("a fade makes small grey text worse, which is the fault it went looking for", () => {
-    // Deliberately not asserting a particular CSS colour here: the page's own greys are
-    // measured in the browser, against the real gradients, where they live. What this
-    // pins is the direction — that dimming a box costs its text contrast, which is why
-    // filing faded text as "not checked" hid faults rather than avoiding false ones.
-    test("the same grey scores lower once its box is dimmed", () => {
-        const grey = LayoutAudit.parseColour("rgb(138, 138, 138)");
-        const solid = LayoutAudit.asPainted(grey, PUCK, { alpha: 1, behind: PAGE });
-        const dimmed = LayoutAudit.asPainted(grey, PUCK, { alpha: 0.7, behind: PAGE });
-        assert.ok(LayoutAudit.contrastRatio(dimmed.fg, dimmed.bg) <
-            LayoutAudit.contrastRatio(solid.fg, solid.bg));
-    });
-
-    test("and a lighter grey scores higher at the same fade", () => {
-        const at = colour => {
-            const painted = LayoutAudit.asPainted(LayoutAudit.parseColour(colour), PUCK, { alpha: 0.7, behind: PAGE });
-            return LayoutAudit.contrastRatio(painted.fg, painted.bg);
-        };
-        assert.ok(at("rgb(174, 174, 174)") > at("rgb(138, 138, 138)"));
-    });
-});
-
-describe("reading a colour off the page", () => {
-    test("rgb and rgba both come back as numbers", () => {
-        assert.deepEqual(LayoutAudit.parseColour("rgb(1, 2, 3)"), { r: 1, g: 2, b: 3, a: 1 });
-        assert.deepEqual(LayoutAudit.parseColour("rgba(1, 2, 3, 0.5)"), { r: 1, g: 2, b: 3, a: 0.5 });
-    });
-
-    test("a gradient gives up every stop, because text could be over any of them", () => {
-        const stops = LayoutAudit.gradientStops("linear-gradient(rgb(203, 170, 240), rgb(169, 127, 214))");
-        assert.equal(stops.length, 2);
-        assert.deepEqual(stops[0], { r: 203, g: 170, b: 240, a: 1 });
-        assert.deepEqual(stops[1], { r: 169, g: 127, b: 214, a: 1 });
-    });
-
-    test("no background image, no stops", () => {
-        assert.deepEqual(LayoutAudit.gradientStops("none"), []);
-    });
-});

tests/holdem/bankAudit.test.js

@@ -1,224 +0,0 @@
-// The banker's job, which is a different job from the dealer's: every chip on the
-// table is a promise to pay cash for it later, and somebody has to be able to check
-// that the promise can be kept before the last two players try to cash out.
-const { test, describe } = require("node:test");
-const assert = require("node:assert/strict");
-const { Betting, HoldemState, Money, makeTable } = require("./load");
-
-const seat = (state, index, name, cash, chips) => {
-    const p = state.seats[index];
-    p.name = name; p.inHand = true; p.buyIns = cash; p.stack = chips;
-    return p;
-};
-
-describe("everyone with money in the game is accounted for", () => {
-    test("a player who has bought in but played no logged hand still appears", () => {
-        const state = makeTable({ seatCount: 6, seated: [0, 1, 2], stack: 0 });
-        seat(state, 0, "Ann", 100, 100);
-        seat(state, 1, "Ben", 100, 100);
-        seat(state, 2, "Cal", 200, 200); // just sat down
-
-        state.seats[0].amountOverride = 10;
-        state.seats[1].amountOverride = 10;
-        HoldemState.recordHand(state, [{ id: state.seats[0].id, label: "Ann", amount: 20 }]);
-        state.seats[0].amountOverride = null;
-        state.seats[1].amountOverride = null;
-
-        const names = HoldemState.sessionStandings(state).map(r => r.name);
-        assert.ok(names.includes("Cal"), `Cal handed over $200 and is missing: ${names.join(", ")}`);
-    });
-
-    test("their row reads as no hands played, not as a loss", () => {
-        const state = makeTable({ seatCount: 4, seated: [0, 1], stack: 0 });
-        seat(state, 0, "Ann", 100, 100);
-        seat(state, 1, "Ben", 200, 200);
-
-        const cal = HoldemState.sessionStandings(state).find(r => r.name === "Ben");
-        assert.equal(cal.in, 0);
-        assert.equal(cal.won, 0);
-        assert.equal(cal.net, 0);
-        assert.equal(cal.boughtIn, 200);
-        assert.equal(cal.cashPosition, 0, "level: they've bought chips and still hold them");
-    });
-
-    test("an empty chair is not dragged into the settle-up", () => {
-        const state = makeTable({ seatCount: 9, seated: [0], stack: 0 });
-        seat(state, 0, "Ann", 100, 100);
-        const rows = HoldemState.sessionStandings(state);
-        assert.equal(rows.length, 1);
-    });
-
-    test("somebody who has cashed out completely still shows what they took", () => {
-        const state = makeTable({ seatCount: 4, seated: [0, 1], stack: 0 });
-        seat(state, 0, "Ann", 100, 0);   // handed every chip back
-        seat(state, 1, "Ben", 100, 200);
-        const ann = HoldemState.sessionStandings(state).find(r => r.name === "Ann");
-        assert.equal(ann.cashPosition, -100, "down the whole buy-in");
-    });
-});
-
-describe("does the cash box cover the chips on the table", () => {
-    test("a straight game balances", () => {
-        const state = makeTable({ seatCount: 4, seated: [0, 1, 2], stack: 0 });
-        seat(state, 0, "Ann", 100, 60);
-        seat(state, 1, "Ben", 100, 140);
-        seat(state, 2, "Cal", 100, 100);
-
-        const bank = HoldemState.bankReconciliation(state);
-        assert.equal(bank.cashIn, 300);
-        assert.equal(bank.chipsInPlay, 300);
-        assert.equal(bank.difference, 0);
-        assert.equal(bank.balanced, true);
-    });
-
-    test("chips outrunning the cash box is caught before cash-out", () => {
-        // The 2am failure: the last players out can't be paid.
-        const state = makeTable({ seatCount: 4, seated: [0, 1, 2], stack: 0 });
-        seat(state, 0, "Ann", 100, 100);
-        seat(state, 1, "Ben", 100, 100);
-        seat(state, 2, "Cal", 100, 260); // took chips for a rebuy nobody wrote down
-
-        const bank = HoldemState.bankReconciliation(state);
-        assert.equal(bank.cashIn, 300);
-        assert.equal(bank.chipsInPlay, 460);
-        assert.equal(bank.difference, 160);
-        assert.equal(bank.balanced, false);
-    });
-
-    test("cash taken for chips never handed over is caught too", () => {
-        const state = makeTable({ seatCount: 4, seated: [0, 1], stack: 0 });
-        seat(state, 0, "Ann", 200, 100); // paid 200, only got 100 in chips
-        seat(state, 1, "Ben", 100, 100);
-
-        const bank = HoldemState.bankReconciliation(state);
-        assert.equal(bank.difference, -100);
-        assert.equal(bank.balanced, false);
-    });
-
-    test("chips in the middle still count as chips in play", () => {
-        // Money in the pot is somebody's; it just hasn't been won yet. Leaving it out
-        // would report a shortfall every time a hand was open — which is nearly always.
-        const state = makeTable({ seatCount: 4, seated: [0, 1, 2], dealerSeatIndex: 0 });
-        state.seats.forEach(p => { if (p.inHand) p.buyIns = 100; });
-
-        const before = HoldemState.bankReconciliation(state);
-        assert.equal(before.balanced, true);
-
-        Betting.beginHand(state);              // blinds go in
-        Betting.raiseTo(state, 0, 25);         // and a raise
-        Betting.sweepToHandTotals(state);      // banked into the pot
-
-        const during = HoldemState.bankReconciliation(state);
-        assert.equal(during.balanced, true, "an open pot is not a discrepancy");
-        assert.equal(during.chipsInPlay, before.chipsInPlay);
-    });
-
-    test("a whole session of play never knocks the books out", () => {
-        const state = makeTable({ seatCount: 6, seated: [0, 1, 2, 3], dealerSeatIndex: 0 });
-        state.seats.forEach(p => { if (p.inHand) p.buyIns = 100; });
-
-        for (let hand = 0; hand < 6; hand++) {
-            Betting.beginHand(state);
-            Betting.liveSeats(state).forEach(s => {
-                if (Betting.toCall(state, s.player) > 0) Betting.call(state, s.index);
-            });
-            Betting.sweepToHandTotals(state);
-
-            const pot = HoldemState.totalPot(state);
-            const winner = Betting.liveSeats(state)[0];
-            const payouts = [{ id: winner.player.id, label: "w", amount: pot }];
-            HoldemState.recordHand(state, payouts);
-            Betting.creditWinnings(state, payouts);
-            HoldemState.startNextHand(state);
-
-            assert.equal(HoldemState.bankReconciliation(state).balanced, true, `books off after hand ${hand + 1}`);
-        }
-    });
-
-    test("a rebuy keeps the books straight, a chip grab doesn't", () => {
-        const state = makeTable({ seatCount: 4, seated: [0, 1], stack: 0 });
-        seat(state, 0, "Ann", 100, 100);
-        seat(state, 1, "Ben", 100, 100);
-
-        // A proper rebuy: cash to the banker, chips to the player.
-        state.seats[0].buyIns += 100;
-        state.seats[0].stack += 100;
-        assert.equal(HoldemState.bankReconciliation(state).balanced, true);
-
-        // Chips taken without paying.
-        state.seats[1].stack += 50;
-        const bank = HoldemState.bankReconciliation(state);
-        assert.equal(bank.balanced, false);
-        assert.equal(bank.difference, 50);
-    });
-
-    test("nothing to reconcile before anybody has bought in", () => {
-        const state = makeTable({ seatCount: 6, seated: [], stack: 0 });
-        const bank = HoldemState.bankReconciliation(state);
-        assert.equal(bank.cashIn, 0);
-        assert.equal(bank.chipsInPlay, 0);
-        assert.equal(bank.balanced, true);
-    });
-
-    test("float dust is not a discrepancy", () => {
-        const state = makeTable({ seatCount: 4, seated: [0, 1], stack: 0 });
-        seat(state, 0, "Ann", 0.1 + 0.2, 0.3);
-        seat(state, 1, "Ben", 10, 10);
-        assert.equal(HoldemState.bankReconciliation(state).balanced, true);
-    });
-});
-
-describe("the number the banker counts out", () => {
-    // The standings had two signed columns and neither was an amount to pay. A player
-    // up $140 on a $340 stack read "$140" under a heading saying "Cash out", at the
-    // exact moment somebody was counting money onto the table.
-    test("chips in front is what they are holding, not what they are up", () => {
-        const state = makeTable({ seatCount: 6, seated: [0, 1], stack: 340 });
-        state.seats[0].name = "Ann";
-        state.seats[0].buyIns = 200;
-        state.seats[1].buyIns = 200;
-        state.seats[1].stack = 60;
-
-        const rows = HoldemState.sessionStandings(state);
-        const ann = rows.find(r => r.name === "Ann");
-        assert.equal(ann.chipsInFront, 340, "the cash to count out");
-        assert.equal(ann.cashPosition, 140, "and separately, that they are up $140");
-    });
-
-    test("a player who is down still has chips to be handed", () => {
-        const state = makeTable({ seatCount: 6, seated: [0, 1], stack: 60 });
-        state.seats[0].name = "Cal";
-        state.seats.forEach(p => { p.buyIns = 200; });
-
-        const cal = HoldemState.sessionStandings(state).find(r => r.name === "Cal");
-        assert.equal(cal.chipsInFront, 60, "they leave with $60 of chips");
-        assert.equal(cal.cashPosition, -140, "having lost $140 of the $200 they brought");
-    });
-
-    test("chips still out in the middle are counted as theirs", () => {
-        // Cashing out mid-hand isn't a thing, but the panel is read mid-hand constantly
-        // and a stack that drops by the size of a bet looks like money going missing.
-        const state = makeTable({ seatCount: 6, seated: [0, 1], stack: 200 });
-        state.seats[0].name = "Dee";
-        state.seats.forEach(p => { p.buyIns = 200; });
-        Betting.beginHand(state);
-        Betting.raiseTo(state, 0, 50);
-
-        const dee = HoldemState.sessionStandings(state).find(r => r.name === "Dee");
-        assert.equal(dee.chipsInFront, 200, "stack plus what's in the middle for them");
-        assert.equal(dee.cashPosition, 0, "so they are still level");
-    });
-
-    test("chips and up/down always differ by exactly the buy-in", () => {
-        const state = makeTable({ seatCount: 9, seated: [0, 1, 2, 3], stack: 100 });
-        [340, 150, 60, 250].forEach((chips, i) => {
-            state.seats[i].stack = chips;
-            state.seats[i].buyIns = 200 + i * 50;
-        });
-
-        HoldemState.sessionStandings(state).forEach(row => {
-            assert.equal(Money.round(row.chipsInFront - row.boughtIn), row.cashPosition,
-                `${row.name}'s two columns should tell one story`);
-        });
-    });
-});

tests/holdem/betting.test.js

@@ -1,198 +0,0 @@
-const { test, describe } = require("node:test");
-const assert = require("node:assert/strict");
-const { Betting, makeTable, chipsOnTable } = require("./load");
-
-describe("Betting.beginHand", () => {
-    test("blinds are posted and the seat after the big blind acts first", () => {
-        const state = makeTable({ seatCount: 6, seated: [0, 1, 2, 3], dealerSeatIndex: 0, smallBlind: 1, bigBlind: 2 });
-        Betting.beginHand(state);
-
-        assert.equal(state.seats[1].committed, 1, "small blind");
-        assert.equal(state.seats[2].committed, 2, "big blind");
-        assert.equal(state.currentBet, 2);
-        assert.equal(state.actingSeatIndex, 3, "under the gun");
-    });
-
-    test("heads-up, the button posts the small blind and acts first pre-flop", () => {
-        const state = makeTable({ seatCount: 6, seated: [2, 5], dealerSeatIndex: 2 });
-        Betting.beginHand(state);
-
-        assert.equal(state.seats[2].committed, 1, "the button is the small blind");
-        assert.equal(state.seats[5].committed, 2);
-        assert.equal(state.actingSeatIndex, 2, "the small blind acts first pre-flop heads-up");
-    });
-
-    test("heads-up, the big blind acts first once the flop is out", () => {
-        const state = makeTable({ seatCount: 6, seated: [2, 5], dealerSeatIndex: 2 });
-        Betting.beginHand(state);
-        Betting.call(state, 2);
-        Betting.check(state, 5);
-        Betting.closeStreet(state);
-
-        assert.equal(state.street, "flop");
-        assert.equal(state.actingSeatIndex, 5, "the big blind is first to act after the flop");
-    });
-
-    test("a blind bigger than a stack puts that player all-in without stalling the action", () => {
-        const state = makeTable({ seatCount: 6, seated: [0, 1], dealerSeatIndex: 0, smallBlind: 50, bigBlind: 100 });
-        state.seats[0].stack = 10; // can't cover the small blind
-
-        Betting.beginHand(state);
-        assert.equal(state.seats[0].stack, 0, "all-in for what they had");
-        assert.equal(state.seats[0].committed, 10);
-        assert.notEqual(state.actingSeatIndex, 0, "a player with no chips has nothing to decide");
-    });
-
-    test("posting blinds never invents or destroys chips", () => {
-        const state = makeTable({ seatCount: 6, seated: [0, 1, 2, 3], stack: 100 });
-        const before = chipsOnTable(state);
-        Betting.beginHand(state);
-        assert.equal(chipsOnTable(state), before);
-    });
-});
-
-describe("Betting street completion", () => {
-    test("a street ends once everyone has matched the bet and had a turn", () => {
-        const state = makeTable({ seatCount: 4, seated: [0, 1, 2, 3], dealerSeatIndex: 0 });
-        Betting.beginHand(state);
-
-        Betting.call(state, 3);
-        Betting.call(state, 0);
-        Betting.call(state, 1);
-        assert.equal(Betting.isStreetComplete(state), false, "the big blind still has an option");
-
-        Betting.check(state, 2);
-        assert.equal(Betting.isStreetComplete(state), true);
-        assert.equal(state.actingSeatIndex, null);
-    });
-
-    test("a raise reopens the action for everyone who had already called", () => {
-        const state = makeTable({ seatCount: 4, seated: [0, 1, 2, 3], dealerSeatIndex: 0 });
-        Betting.beginHand(state);
-
-        Betting.call(state, 3);
-        Betting.call(state, 0);
-        assert.equal(state.seats[3].hasActed, true);
-
-        Betting.raiseTo(state, 1, 10);
-        assert.equal(state.seats[3].hasActed, false, "seat 3 owes a response again");
-        assert.equal(state.seats[0].hasActed, false);
-        assert.equal(state.currentBet, 10);
-        assert.equal(Betting.isStreetComplete(state), false);
-    });
-
-    test("the action skips a player who is all-in but still in the hand", () => {
-        const state = makeTable({ seatCount: 4, seated: [0, 1, 2, 3], dealerSeatIndex: 0 });
-        state.seats[3].stack = 5;
-        Betting.beginHand(state);
-
-        Betting.allIn(state, 3);
-        assert.equal(state.seats[3].stack, 0);
-        assert.notEqual(state.actingSeatIndex, 3);
-        // They are still live and can still win the pot.
-        assert.ok(Betting.liveSeats(state).some(s => s.index === 3));
-    });
-
-    test("closing a street sweeps chips into hand totals and resets the bet", () => {
-        const state = makeTable({ seatCount: 4, seated: [0, 1, 2, 3], dealerSeatIndex: 0 });
-        Betting.beginHand(state);
-        Betting.call(state, 3);
-        Betting.call(state, 0);
-        Betting.call(state, 1);
-        Betting.check(state, 2);
-
-        const before = chipsOnTable(state);
-        Betting.closeStreet(state);
-
-        assert.equal(state.currentBet, 0);
-        assert.equal(state.street, "flop");
-        assert.equal(chipsOnTable(state), before, "sweeping moves chips, it doesn't change the total");
-        state.seats.forEach(p => assert.equal(p.committed, 0));
-        assert.equal(Betting.handTotal(state.seats[2]), 2);
-    });
-});
-
-describe("Betting all-in run-outs", () => {
-    test("with everyone all-in there is nobody left to ask", () => {
-        const state = makeTable({ seatCount: 3, seated: [0, 1, 2], stack: 20, dealerSeatIndex: 0 });
-        Betting.beginHand(state);
-        Betting.allIn(state, 2);
-        Betting.allIn(state, 0);
-        Betting.allIn(state, 1);
-
-        assert.equal(Betting.canStillBet(state), false);
-        assert.equal(Betting.isRunningOut(state), true, "the board just gets dealt out");
-
-        Betting.closeStreet(state);
-        assert.equal(state.actingSeatIndex, null, "no phantom action on the flop");
-    });
-
-    test("one player with chips against an all-in cannot bet alone", () => {
-        const state = makeTable({ seatCount: 3, seated: [0, 1, 2], dealerSeatIndex: 0 });
-        state.seats[1].stack = 5;
-        Betting.beginHand(state);
-        Betting.fold(state, 2);
-        Betting.allIn(state, 0);
-        Betting.allIn(state, 1);
-
-        assert.equal(Betting.canStillBet(state), false);
-        assert.equal(Betting.isHandOver(state), false, "two players are still live for the showdown");
-    });
-
-    test("everyone folding to one player ends the hand", () => {
-        const state = makeTable({ seatCount: 4, seated: [0, 1, 2, 3], dealerSeatIndex: 0 });
-        Betting.beginHand(state);
-        Betting.fold(state, 3);
-        Betting.fold(state, 0);
-        Betting.fold(state, 1);
-
-        assert.equal(Betting.isHandOver(state), true);
-    });
-});
-
-describe("Betting money handling", () => {
-    test("a player can never put in more than they have", () => {
-        const state = makeTable({ seatCount: 3, seated: [0, 1, 2], stack: 30, dealerSeatIndex: 0 });
-        Betting.beginHand(state);
-        const moved = Betting.putIn(state, 0, 500);
-        assert.equal(moved, 30);
-        assert.equal(state.seats[0].stack, 0);
-    });
-
-    test("raise-to is what a dealer says out loud, not raise-by", () => {
-        const state = makeTable({ seatCount: 4, seated: [0, 1, 2, 3], dealerSeatIndex: 0 });
-        Betting.beginHand(state);
-        Betting.raiseTo(state, 3, 10);
-        assert.equal(state.seats[3].committed, 10, "their street total is 10, not 10 on top");
-        assert.equal(state.seats[3].stack, 90);
-    });
-
-    test("the minimum raise has to match the last one", () => {
-        const state = makeTable({ seatCount: 4, seated: [0, 1, 2, 3], dealerSeatIndex: 0 });
-        Betting.beginHand(state);
-        assert.equal(Betting.minRaiseTo(state), 4, "a big blind of 2 makes the first raise 4");
-
-        Betting.raiseTo(state, 3, 10);
-        assert.equal(Betting.minRaiseTo(state), 18, "an 8-chip raise means the next one is to 18");
-    });
-
-    test("winnings land back in front of the player", () => {
-        const state = makeTable({ seatCount: 3, seated: [0, 1, 2], dealerSeatIndex: 0 });
-        Betting.beginHand(state);
-        Betting.creditWinnings(state, [{ id: state.seats[0].id, amount: 42.5 }]);
-        assert.equal(state.seats[0].stack, 142.5, "the button posts nothing three-handed");
-    });
-
-    test("fractional blinds don't drift into floating-point dust", () => {
-        const state = makeTable({ seatCount: 3, seated: [0, 1, 2], stack: 10, smallBlind: 0.1, bigBlind: 0.2 });
-        Betting.beginHand(state);
-        Betting.call(state, 0); // button limps
-        Betting.call(state, 1); // small blind completes
-        Betting.check(state, 2); // big blind is happy
-        Betting.closeStreet(state);
-
-        assert.equal(chipsOnTable(state), 30, "0.1 + 0.2 arithmetic didn't lose a chip");
-        assert.equal(Betting.potSoFar(state), 0.6);
-        state.seats.forEach(p => assert.equal(p.stack, 9.8));
-    });
-});

tests/holdem/brokeSeats.test.js

@@ -1,148 +0,0 @@
-// Dealing around a player who busted and hasn't bought back in.
-//
-// A home game produces one of these about once an hour. The table used to deal them
-// in anyway, promise a blind from a seat with nothing to post it with, take it from
-// nobody, and then sit on a hand that could never finish.
-const test = require("node:test");
-const assert = require("node:assert");
-const { Betting, HoldemState, makeTable, chipsOnTable } = require("./load");
-
-const postedBy = state =>
-    state.seats
-        .map((player, index) => (player.committed > 0 ? { seat: index + 1, amount: player.committed } : null))
-        .filter(Boolean);
-
-test("a seat with no chips and nothing in the pot is broke", () => {
-    const state = makeTable({ seatCount: 6, seated: [0, 1, 2], stack: 100 });
-    state.seats[2].stack = 0;
-    assert.deepEqual(Betting.brokeSeats(state), [2]);
-});
-
-test("an all-in player is not broke — they have money riding on the hand", () => {
-    const state = makeTable({ seatCount: 6, seated: [0, 1, 2], stack: 100 });
-    state.seats[2].stack = 12;
-    Betting.beginHand(state);
-    Betting.allIn(state, 2);
-
-    assert.equal(Betting.stackOf(state, state.seats[2]), 0);
-    assert.equal(Betting.isAllIn(state, state.seats[2]), true);
-    assert.deepEqual(Betting.brokeSeats(state), []);
-});
-
-test("a seat with no stack recorded falls back to the table's and isn't broke", () => {
-    const state = makeTable({ seatCount: 6, seated: [0, 1, 2], stack: 100 });
-    state.defaultStack = 200;
-    state.seats[2].stack = null;
-    assert.deepEqual(Betting.brokeSeats(state), []);
-});
-
-test("a chair nobody is sitting in isn't broke, it's empty", () => {
-    const state = makeTable({ seatCount: 6, seated: [0, 1, 2], stack: 100 });
-    assert.deepEqual(Betting.brokeSeats(state), []);
-});
-
-test("dealing sits the broke seat out and leaves everything else about it alone", () => {
-    const state = makeTable({ seatCount: 6, seated: [0, 1, 2, 3], stack: 100 });
-    state.seats[2].stack = 0;
-    state.seats[2].name = "Cal";
-    state.seats[2].buyIns = 100;
-
-    Betting.beginHand(state);
-
-    assert.equal(state.seats[2].inHand, false);
-    assert.equal(state.seats[2].folded, false, "sat out, not folded — they didn't muck anything");
-    assert.equal(state.seats[2].name, "Cal");
-    assert.equal(state.seats[2].buyIns, 100);
-});
-
-test("the blinds skip the broke seat and land on players who can post", () => {
-    // Button on seat 1, so the blinds would be seats 2 and 3. Seat 2 is busted.
-    const state = makeTable({ seatCount: 6, seated: [0, 1, 2, 3], stack: 100, dealerSeatIndex: 0 });
-    state.seats[1].stack = 0;
-
-    Betting.beginHand(state);
-
-    assert.deepEqual(postedBy(state), [
-        { seat: 3, amount: state.smallBlind },
-        { seat: 4, amount: state.bigBlind },
-    ]);
-});
-
-test("the preview promises what the deal produces", () => {
-    // The fault this whole step exists to prevent: the preview once read a table the
-    // deal was about to change underneath it.
-    const state = makeTable({ seatCount: 6, seated: [0, 1, 2, 3], stack: 100, dealerSeatIndex: 0 });
-    state.seats[1].stack = 0;
-    state.bettingOpen = false;
-
-    const preview = Betting.blindPreview(state);
-    assert.deepEqual(preview.satOut, [1]);
-
-    Betting.beginHand(state);
-    const posted = postedBy(state);
-    assert.equal(posted.find(p => p.amount === state.smallBlind).seat, preview.sbIndex + 1);
-    assert.equal(posted.find(p => p.amount === state.bigBlind).seat, preview.bbIndex + 1);
-});
-
-test("asking for the preview doesn't sit anybody out on its own", () => {
-    const state = makeTable({ seatCount: 6, seated: [0, 1, 2], stack: 100 });
-    state.seats[1].stack = 0;
-
-    Betting.blindPreview(state);
-
-    assert.equal(state.seats[1].inHand, true, "the preview is a view, not a change");
-});
-
-test("with only one player left holding chips there is nothing to preview", () => {
-    const state = makeTable({ seatCount: 6, seated: [0, 1, 2], stack: 100 });
-    state.seats[1].stack = 0;
-    state.seats[2].stack = 0;
-
-    assert.equal(Betting.blindPreview(state), null);
-});
-
-test("no chips move when the broke seats are dealt around", () => {
-    const state = makeTable({ seatCount: 6, seated: [0, 1, 2, 3], stack: 100 });
-    state.seats[2].stack = 0;
-    const before = chipsOnTable(state);
-
-    Betting.beginHand(state);
-
-    assert.equal(chipsOnTable(state), before);
-});
-
-test("the board isn't running out before the hand is dealt", () => {
-    // Two busted players and one with chips looks exactly like a table of all-ins to
-    // the run-out test, and the bar was announcing one over an empty felt.
-    const state = makeTable({ seatCount: 6, seated: [0, 1, 2], stack: 100 });
-    state.seats[1].stack = 0;
-    state.seats[2].stack = 0;
-    state.bettingOpen = false;
-
-    assert.equal(Betting.isRunningOut(state), false);
-});
-
-test("buying back in puts them in the next hand", () => {
-    const state = makeTable({ seatCount: 6, seated: [0, 1, 2], stack: 100 });
-    state.seats[2].stack = 0;
-    Betting.beginHand(state);
-    assert.equal(state.seats[2].inHand, false);
-
-    // What the dealer does when they hand over cash: chips, and back in.
-    state.seats[2].stack = 100;
-    state.seats[2].inHand = true;
-    HoldemState.startNextHand(state);
-    Betting.beginHand(state);
-
-    assert.equal(state.seats[2].inHand, true);
-    assert.equal(Betting.liveSeats(state).length, 3);
-});
-
-test("the table dealt around them counts the right number of players", () => {
-    const state = makeTable({ seatCount: 6, seated: [0, 1, 2, 3], stack: 100 });
-    state.seats[3].stack = 0;
-
-    assert.equal(Betting.liveSeats(state).length, 4);
-    assert.equal(Betting.liveSeats(Betting.tableAsDealt(state)).length, 3);
-    assert.equal(state.seats[3].inHand, true, "the view didn't touch the table");
-});

tests/holdem/buyIn.test.js

@@ -1,76 +0,0 @@
-// Whether handing a seat chips also puts them back in the game.
-const test = require("node:test");
-const assert = require("node:assert");
-const { Betting, makeTable } = require("./load");
-
-test("a busted player who has been sat out comes back in", () => {
-    const state = makeTable({ seatCount: 6, seated: [0, 1, 2], stack: 100 });
-    state.seats[1].stack = 0;
-    Betting.beginHand(state);           // the deal sits them out
-
-    assert.equal(state.seats[1].inHand, false);
-    assert.equal(Betting.buyInDealsThemIn(state.seats[1]), true);
-});
-
-test("a chair being bought into for the first time comes in", () => {
-    const state = makeTable({ seatCount: 6, seated: [0, 1], stack: 100 });
-    state.seats[4].name = "Eve";
-    state.seats[4].stack = null;
-
-    assert.equal(Betting.buyInDealsThemIn(state.seats[4]), true);
-});
-
-test("a seat sat out while holding chips stays out", () => {
-    // A dealer sat them out on purpose and is topping them up. Dealing them back in
-    // would be the tool guessing at something it wasn't told.
-    const state = makeTable({ seatCount: 6, seated: [0, 1, 2], stack: 100 });
-    state.seats[2].inHand = false;
-
-    assert.equal(Betting.buyInDealsThemIn(state.seats[2]), false);
-});
-
-test("somebody already in the hand is left exactly where they are", () => {
-    const state = makeTable({ seatCount: 6, seated: [0, 1, 2], stack: 100 });
-    assert.equal(Betting.buyInDealsThemIn(state.seats[0]), false);
-
-    // Including a player who is in but out of chips — they're all-in, not sat out.
-    state.seats[2].stack = 0;
-    assert.equal(state.seats[2].inHand, true);
-    assert.equal(Betting.buyInDealsThemIn(state.seats[2]), false);
-});
-
-test("a blank stack field reads as nothing recorded, not as a number", () => {
-    const state = makeTable({ seatCount: 6, seated: [0, 1], stack: 100 });
-    state.seats[3].name = "Dee";
-    state.seats[3].stack = "";
-
-    assert.equal(Betting.buyInDealsThemIn(state.seats[3]), true);
-});
-
-test("it doesn't ask the table what a missing stack would have been", () => {
-    // stackOf substitutes the table's starting stack for a seat that has none, which
-    // would make a seat with nothing recorded look like it was holding chips.
-    const state = makeTable({ seatCount: 6, seated: [0, 1], stack: 100 });
-    state.defaultStack = 500;
-    state.seats[4].name = "Eve";
-    state.seats[4].stack = null;
-
-    assert.equal(Betting.stackOf(state, state.seats[4]), 500);
-    assert.equal(Betting.buyInDealsThemIn(state.seats[4]), true);
-});
-
-test("asking doesn't change anything", () => {
-    const state = makeTable({ seatCount: 6, seated: [0, 1, 2], stack: 100 });
-    state.seats[2].stack = 0;
-    state.seats[2].inHand = false;
-    const before = JSON.stringify(state);
-
-    Betting.buyInDealsThemIn(state.seats[2]);
-
-    assert.equal(JSON.stringify(state), before);
-});
-
-test("nothing to decide about a seat that isn't there", () => {
-    assert.equal(Betting.buyInDealsThemIn(null), false);
-    assert.equal(Betting.buyInDealsThemIn(undefined), false);
-});

tests/holdem/callingTheClock.test.js

@@ -1,129 +0,0 @@
-// Calling the clock on a player.
-//
-// The bar already had a stopwatch saying how long somebody had been thinking. This is
-// what a dealer does about it: a procedure with a shape — a set time, a countdown said
-// out loud, and a ruling at the end that depends on what the player was facing.
-const test = require("node:test");
-const { describe } = require("node:test");
-const assert = require("node:assert");
-const { ActionBar, Betting, makeTable } = require("./load");
-
-// The bar rebuilds the DOM when a clock starts; none of the rules below need it.
-const onTable = (state) => {
-    ActionBar.state = state;
-    ActionBar.render = () => {};
-    ActionBar.stopClock();
-    return ActionBar;
-};
-
-const dealt = () => {
-    const state = makeTable({ seatCount: 6, stack: 200, smallBlind: 1, bigBlind: 2, dealerSeatIndex: 0 });
-    Betting.beginHand(state);
-    return state;
-};
-
-describe("starting one", () => {
-    test("it runs on the player who is actually on the clock", () => {
-        const state = dealt();
-        const bar = onTable(state);
-        assert.equal(bar.clockRunning(), false, "nothing runs until it is called");
-        bar.callClock();
-        assert.equal(bar.clockRunning(), true);
-        assert.equal(bar.clockSeatIndex, state.actingSeatIndex);
-    });
-
-    test("with nobody to act there is nothing to call", () => {
-        const state = dealt();
-        state.actingSeatIndex = null;
-        const bar = onTable(state);
-        bar.callClock();
-        assert.equal(bar.clockRunning(), false);
-        assert.equal(bar.clockLeft(), null);
-    });
-
-    test("the dealer can put it away again", () => {
-        const bar = onTable(dealt());
-        bar.callClock();
-        bar.stopClock();
-        assert.equal(bar.clockRunning(), false);
-        assert.equal(bar.clockLeft(), null);
-    });
-});
-
-describe("the count", () => {
-    const at = (bar, seconds) => bar.clockLeft(bar.clockStartedAt + seconds * 1000);
-
-    test("is the player's own time and then a countdown", () => {
-        const bar = onTable(dealt());
-        bar.callClock();
-        assert.equal(at(bar, 0), bar.CLOCK_THINK_S + bar.CLOCK_COUNTDOWN_S);
-        assert.equal(at(bar, 30), bar.CLOCK_COUNTDOWN_S, "thirty gone, the countdown starts");
-        assert.equal(at(bar, 35), 5);
-    });
-
-    test("stops at zero rather than going negative", () => {
-        const bar = onTable(dealt());
-        bar.callClock();
-        assert.equal(at(bar, 40), 0);
-        assert.equal(at(bar, 600), 0, "ten minutes later it is still just up");
-    });
-});
-
-describe("what happens at zero", () => {
-    test("facing a bet, the hand is dead", () => {
-        const state = dealt();
-        const bar = onTable(state);
-        // Whoever is up pre-flop is facing the big blind.
-        const ruling = bar.clockRuling();
-        assert.equal(ruling.verb, "fold");
-        assert.match(ruling.label, /hand is dead/);
-        assert.match(ruling.say, /facing \$2/);
-    });
-
-    test("facing nothing, it is checked — slowness doesn't fold a free hand", () => {
-        const state = dealt();
-        // Everyone calls round to the big blind, who has nothing to call.
-        [3, 4, 5, 0, 1].forEach(seat => Betting.call(state, seat));
-        const bar = onTable(state);
-        assert.equal(state.actingSeatIndex, 2, "the big blind is up");
-        const ruling = bar.clockRuling();
-        assert.equal(ruling.verb, "check");
-        assert.match(ruling.label, /check for/i);
-    });
-
-    test("the ruling names the player, because the dealer has to say it out loud", () => {
-        const state = dealt();
-        state.seats[state.actingSeatIndex].name = "Priya";
-        const ruling = onTable(state).clockRuling();
-        assert.match(ruling.label, /Priya/);
-        assert.match(ruling.say, /Priya/);
-    });
-
-    test("with nobody to act there is no ruling to make", () => {
-        const state = dealt();
-        state.actingSeatIndex = null;
-        assert.equal(onTable(state).clockRuling(), null);
-    });
-});
-
-describe("what ends it", () => {
-    test("the player acting", () => {
-        const state = dealt();
-        const bar = onTable(state);
-        bar.callClock();
-        const wasOn = state.actingSeatIndex;
-        Betting.call(state, wasOn);
-        assert.notEqual(state.actingSeatIndex, wasOn, "the action has moved");
-        assert.equal(bar.clockRunning(), false, "so the clock is no longer this player's");
-    });
-
-    test("and it doesn't follow the action to the next player", () => {
-        // A clock is called on one decision. Left running it would put a countdown on
-        // somebody nobody asked about.
-        const state = dealt();
-        const bar = onTable(state);
-        bar.callClock();
-        Betting.call(state, state.actingSeatIndex);
-        assert.equal(bar.clockLeft(), null);
-    });
-});

tests/holdem/cashOut.test.js

@@ -1,229 +0,0 @@
-// Somebody leaving with their chips.
-//
-// The most ordinary thing that happens at a home game after midnight, and the tool had
-// nothing for it. Freeing the chair meant wiping the seat by hand, and then the bank
-// check — cash taken against chips on the table — declared the departing player's whole
-// stack missing for the rest of the night. Wiping their buy-in too silenced it, at the
-// price of losing their night from the standings and the file the dealer hands over.
-const test = require("node:test");
-const { describe } = require("node:test");
-const assert = require("node:assert");
-const { Money, HoldemState, Betting, makeTable } = require("./load");
-
-const table = () => {
-    const state = makeTable({ seatCount: 6, seated: [0, 1, 2, 3], stack: 200 });
-    ["Ann", "Ben", "Cal", "Dee"].forEach((name, i) => {
-        state.seats[i].name = name;
-        state.seats[i].buyIns = 200;
-    });
-    return state;
-};
-
-describe("counting them out", () => {
-    test("the preview is what the dealer's hands follow", () => {
-        const state = table();
-        state.seats[0].stack = 350;
-        const preview = HoldemState.cashOutPreview(state, 0);
-        assert.equal(preview.name, "Ann");
-        assert.equal(preview.chips, 350, "what they are holding");
-        assert.equal(preview.boughtIn, 200);
-        assert.equal(preview.net, 150, "up for the night");
-        assert.match(preview.breakdown, /\d+×\$\d+/, "and the chips that make it");
-    });
-
-    test("a player who is down reads as down, not as a smaller stack", () => {
-        const state = table();
-        state.seats[1].stack = 60;
-        assert.equal(HoldemState.cashOutPreview(state, 1).net, -140);
-    });
-
-    test("a seat that never set a stack is holding the table's starting stack", () => {
-        const state = table();
-        state.defaultStack = 200;
-        state.seats[2].stack = null;
-        assert.equal(HoldemState.cashOutPreview(state, 2).chips, 200);
-    });
-});
-
-describe("what it refuses", () => {
-    test("paying somebody with money still in the middle", () => {
-        const state = table();
-        Betting.beginHand(state);
-        const bb = state.seats.findIndex(p => (Number(p.committed) || 0) > 0);
-        const refusal = HoldemState.canCashOut(state, bb);
-        assert.equal(refusal.ok, false);
-        assert.match(refusal.reason, /in the pot/);
-        // And the refusal is the whole story: nothing moved.
-        assert.equal(HoldemState.cashOut(state, bb).ok, false);
-        assert.equal((state.cashedOut || []).length, 0);
-        assert.ok(state.seats[bb].name, "the seat is untouched");
-    });
-
-    test("an empty chair, which has nobody to pay", () => {
-        const state = table();
-        const refusal = HoldemState.canCashOut(state, 99);
-        assert.equal(refusal.ok, false);
-    });
-});
-
-describe("the chair afterwards", () => {
-    test("is empty and ready for the next player", () => {
-        const state = table();
-        state.seats[0].stack = 350;
-        HoldemState.cashOut(state, 0);
-        const seat = state.seats[0];
-        assert.equal(seat.name, "");
-        assert.equal(seat.stack, null);
-        assert.equal(seat.buyIns, 0);
-        assert.equal(seat.inHand, false);
-    });
-
-    test("belongs to somebody new, so two people's nights can't merge", () => {
-        const state = table();
-        const wasId = state.seats[0].id;
-        HoldemState.cashOut(state, 0);
-        assert.notEqual(state.seats[0].id, wasId);
-    });
-
-    test("and isn't owed the blind the person before them was posting", () => {
-        const state = table();
-        state.postingIn = [state.seats[0].id, state.seats[1].id];
-        HoldemState.cashOut(state, 0);
-        assert.deepEqual(state.postingIn, [state.seats[1].id]);
-    });
-});
-
-describe("the bank check", () => {
-    test("balanced before, balanced after — the chips went somewhere known", () => {
-        const state = table();
-        state.seats[0].stack = 350;
-        state.seats[1].stack = 50;
-        assert.equal(HoldemState.bankReconciliation(state).balanced, true);
-
-        HoldemState.cashOut(state, 0);
-        const bank = HoldemState.bankReconciliation(state);
-        assert.equal(bank.paidOut, 350);
-        assert.equal(bank.cashIn, 800, "their buy-in is still cash the box took");
-        assert.equal(bank.chipsInPlay, 450);
-        assert.equal(bank.balanced, true);
-    });
-
-    test("this is the fault it fixes: wiping the seat by hand loses $350", () => {
-        const state = table();
-        state.seats[0].stack = 350;
-        state.seats[1].stack = 50;   // so the table starts out balanced
-        // What a dealer had to do before: empty the chair themselves.
-        state.seats[0].name = "";
-        state.seats[0].stack = null;
-        state.seats[0].inHand = false;
-        const bank = HoldemState.bankReconciliation(state);
-        assert.equal(bank.balanced, false);
-        assert.equal(bank.difference, -350, "the tool called it missing money");
-    });
-
-    test("chips that really are missing still show as missing", () => {
-        // Counting a cash-out must not become a way of swallowing a genuine shortfall.
-        const state = table();
-        state.seats[0].stack = 350;
-        state.seats[1].stack = 50;    // balanced to start with
-        HoldemState.cashOut(state, 0);
-        state.seats[2].stack = 150;   // and now fifty chips have gone astray
-        const bank = HoldemState.bankReconciliation(state);
-        assert.equal(bank.balanced, false);
-        assert.equal(bank.difference, -50);
-    });
-
-    test("a rake and a cash-out are counted apart", () => {
-        const state = table();
-        state.seats[0].stack = 350;
-        state.rakeTaken = 12;
-        state.seats[1].stack = 38;   // the rake came out of Ben's stack
-        HoldemState.cashOut(state, 0);
-        const bank = HoldemState.bankReconciliation(state);
-        assert.equal(bank.raked, 12);
-        assert.equal(bank.paidOut, 350);
-        assert.equal(bank.balanced, true);
-    });
-});
-
-describe("the record of their night", () => {
-    test("they stay in the standings with what they bought and what they left with", () => {
-        const state = table();
-        state.seats[0].stack = 350;
-        HoldemState.recordHand(state, [{ id: state.seats[0].id, label: "Ann", amount: 150 }]);
-        HoldemState.cashOut(state, 0);
-
-        const ann = HoldemState.sessionStandings(state).find(row => row.name === "Ann");
-        assert.ok(ann, "still on the list");
-        assert.equal(ann.boughtIn, 200);
-        assert.equal(ann.chipsInFront, 350, "what the box handed over");
-        assert.equal(ann.cashPosition, 150);
-        assert.equal(ann.cashedOut, true, "and marked, so nobody pays them twice");
-    });
-
-    test("somebody still sitting there is not marked", () => {
-        const state = table();
-        HoldemState.cashOut(state, 0);
-        const ben = HoldemState.sessionStandings(state).find(row => row.name === "Ben");
-        assert.equal(ben.cashedOut, false);
-    });
-
-    test("two people leaving are both kept", () => {
-        const state = table();
-        state.seats[0].stack = 350;
-        state.seats[1].stack = 50;
-        HoldemState.cashOut(state, 0);
-        HoldemState.cashOut(state, 1);
-        assert.equal(state.cashedOut.length, 2);
-        assert.equal(HoldemState.bankReconciliation(state).paidOut, 400);
-        assert.equal(HoldemState.bankReconciliation(state).balanced, true);
-    });
-
-    test("a table saved before any of this existed has nobody cashed out", () => {
-        const parsed = JSON.parse(JSON.stringify(table()));
-        delete parsed.cashedOut;
-        const migrated = HoldemState.migrate(parsed);
-        assert.deepEqual(migrated.cashedOut, []);
-        assert.equal(HoldemState.bankReconciliation(migrated).paidOut, 0);
-    });
-
-    test("nonsense in a saved record is cleaned up rather than trusted", () => {
-        const parsed = JSON.parse(JSON.stringify(table()));
-        parsed.cashedOut = [
-            { id: "a", name: "Ann", buyIns: -5, chips: "350", at: "nope" },
-            { name: "no id" },
-            null,
-        ];
-        const migrated = HoldemState.migrate(parsed);
-        assert.equal(migrated.cashedOut.length, 1);
-        assert.equal(migrated.cashedOut[0].buyIns, 0);
-        assert.equal(migrated.cashedOut[0].chips, 350);
-        assert.equal(migrated.cashedOut[0].at, 0);
-    });
-});
-
-describe("the table carries on", () => {
-    test("the next hand deals round the empty chair", () => {
-        const state = table();
-        state.seats[0].stack = 350;
-        HoldemState.cashOut(state, 0);
-        HoldemState.startNextHand(state);
-        Betting.beginHand(state);
-
-        assert.equal(state.seats[0].inHand, false, "nobody is in the empty chair");
-        assert.equal(Betting.liveSeats(state).length, 3);
-        assert.ok(state.actingSeatIndex !== null, "somebody is on the clock");
-    });
-
-    test("and the money still adds up once it has", () => {
-        const state = table();
-        state.seats[0].stack = 350;
-        state.seats[1].stack = 50;
-        HoldemState.cashOut(state, 0);
-        HoldemState.startNextHand(state);
-        Betting.beginHand(state);
-        const bank = HoldemState.bankReconciliation(state);
-        assert.equal(Money.round(bank.chipsInPlay + bank.paidOut), bank.cashIn);
-        assert.equal(bank.balanced, true);
-    });
-});

tests/holdem/chipBreakdown.test.js

@@ -1,82 +0,0 @@
-// The chips to actually push, for an amount.
-const test = require("node:test");
-const assert = require("node:assert");
-const { Money } = require("./load");
-
-// A standard house set.
-const LEGEND = [
-    { value: 1, color: "#fff" },
-    { value: 5, color: "#c0392b" },
-    { value: 25, color: "#27ae60" },
-    { value: 100, color: "#2c3e50" },
-    { value: 500, color: "#8e44ad" },
-];
-
-const say = (amount, legend = LEGEND) => Money.formatChipBreakdown(amount, legend);
-
-test("a payout comes back as chips, largest first", () => {
-    assert.equal(say(132), "1×$100, 1×$25, 1×$5, 2×$1");
-});
-
-test("it uses the fewest chips on a normal set", () => {
-    const { chips } = Money.chipBreakdown(500, LEGEND);
-    assert.deepEqual(chips.map(c => `${c.count}×${c.value}`), ["1×500"]);
-});
-
-test("a denomination that doesn't fit is skipped rather than listed as none", () => {
-    assert.equal(say(7), "1×$5, 2×$1");
-});
-
-test("nothing to pay is nothing to say", () => {
-    assert.equal(say(0), "");
-    assert.equal(say(-5), "");
-});
-
-test("no legend means no advice, not a wrong answer", () => {
-    // A table that never set chip colours up gets the amount on its own.
-    assert.equal(say(132, []), "");
-    assert.equal(say(132, null), "");
-});
-
-test("a legend with no values in it yet is the same as none", () => {
-    assert.equal(say(132, [{ value: "", color: "#fff" }, { value: 0, color: "#000" }]), "");
-});
-
-test("what the smallest chip can't make is reported, not rounded away", () => {
-    // 50c in a game whose smallest chip is a dollar is the dealer's problem to solve,
-    // and they can only solve it if they're told.
-    const { chips, remainder } = Money.chipBreakdown(10.5, LEGEND);
-    assert.deepEqual(chips.map(c => `${c.count}×${c.value}`), ["2×5"]);
-    assert.equal(remainder, 0.5);
-    assert.equal(say(10.5), "2×$5, $0.50 no chip covers");
-});
-
-test("cent chips make cent amounts exactly", () => {
-    const cents = [{ value: 0.25 }, { value: 0.05 }, { value: 0.01 }];
-    assert.equal(say(0.41, cents), "1×$0.25, 3×$0.05, 1×$0.01");
-    assert.equal(Money.chipBreakdown(0.41, cents).remainder, 0);
-});
-
-test("the chips add up to the amount", () => {
-    for (const amount of [1, 7, 33, 132, 499, 500, 1234, 9999]) {
-        const { chips, remainder } = Money.chipBreakdown(amount, LEGEND);
-        const total = chips.reduce((sum, c) => sum + c.count * c.value, 0) + remainder;
-        assert.equal(Money.round(total), amount, `${amount} should be accounted for`);
-    }
-});
-
-test("a legend in any order still pays largest first", () => {
-    const jumbled = [{ value: 25 }, { value: 1 }, { value: 500 }, { value: 5 }, { value: 100 }];
-    assert.equal(say(631, jumbled), "1×$500, 1×$100, 1×$25, 1×$5, 1×$1");
-});
-
-test("the colour comes along, so the felt can say it in chips", () => {
-    const { chips } = Money.chipBreakdown(25, LEGEND);
-    assert.equal(chips[0].color, "#27ae60");
-});
-
-test("a legend that exists but can't reach the amount does say so", () => {
-    // Different from having no legend at all: this table has told us its chips, and
-    // the answer is that they don't go that low.
-    assert.equal(say(3, [{ value: 5 }, { value: 25 }]), "$3 no chip covers");
-});

tests/holdem/deadButton.test.js

@@ -1,268 +0,0 @@
-// The button when somebody gets up out of the blinds.
-//
-// Passing the button to the next *player* is right until a chair between the button
-// and the blinds empties. Then it pulls the whole blind order forward a place: the
-// player after the empty chair is never asked for a big blind, and the one after them
-// is asked an orbit early. The dead button rule holds the rotation to the seats for
-// one hand so the big blind still advances exactly one player.
-const test = require("node:test");
-const { describe } = require("node:test");
-const assert = require("node:assert");
-const { HoldemState, Betting, makeTable } = require("./load");
-
-// Four players in six chairs: Ann 0, Ben 1, Cal 2, Dee 3.
-const NAMES = ["Ann", "Ben", "Cal", "Dee"];
-const table = (dealerSeatIndex = 0) => {
-    const state = makeTable({ seatCount: 6, seated: [0, 1, 2, 3], stack: 200, dealerSeatIndex });
-    NAMES.forEach((name, i) => { state.seats[i].name = name; });
-    return state;
-};
-
-const nameOf = (state, index) =>
-    index === null || index === undefined ? null : (state.seats[index].name || `empty seat ${index + 1}`);
-
-const blinds = state => {
-    const { sbIndex, bbIndex } = HoldemState.getBlindSeats(state);
-    return { sb: nameOf(state, sbIndex), bb: nameOf(state, bbIndex) };
-};
-
-const leave = (state, index) => {
-    state.seats[index].name = "";
-    state.seats[index].inHand = false;
-    state.seats[index].stack = 0;
-    state.seats[index].buyIns = 0;
-};
-
-describe("somebody gets up out of the blinds", () => {
-    test("the small blind leaves: dead button, and the big blind still moves one player", () => {
-        const state = table(1);                 // button Ben, small Cal, big Dee
-        Betting.beginHand(state);
-        assert.deepEqual(blinds(state), { sb: "Cal", bb: "Dee" });
-
-        leave(state, 2);                        // Cal takes their chips and goes
-        HoldemState.startNextHand(state);
-        Betting.beginHand(state);
-
-        assert.equal(state.dealerSeatIndex, 2, "the button holds Cal's empty chair");
-        assert.equal(state.seats[2].inHand, false, "which is the point — it's on nobody");
-        assert.deepEqual(blinds(state), { sb: "Dee", bb: "Ann" },
-            "Dee moves from big to small and Ann posts the big blind, one player along");
-    });
-
-    test("and Ann is not skipped, which is the money in it", () => {
-        // The old rotation passed the button to the next player, which made the blinds
-        // Ann/Ben — Ann never posting a big blind at all, and Ben posting one an orbit
-        // early. That is a real big blind out of a real player's stack.
-        const state = table(1);
-        Betting.beginHand(state);
-        leave(state, 2);
-        HoldemState.startNextHand(state);
-
-        assert.equal(blinds(state).bb, "Ann", "Ann owes the big blind and still owes it");
-    });
-
-    test("the big blind leaves: no small blind is posted this hand", () => {
-        const state = table(1);                 // button Ben, small Cal, big Dee
-        Betting.beginHand(state);
-
-        leave(state, 3);                        // Dee goes
-        HoldemState.startNextHand(state);
-        Betting.beginHand(state);
-
-        const { sbIndex, bbIndex, deadSmallBlind } = HoldemState.getBlindSeats(state);
-        assert.equal(state.dealerSeatIndex, 2, "the button reaches Cal as it was always going to");
-        assert.equal(sbIndex, null, "the small blind is dead");
-        assert.equal(deadSmallBlind, true, "and says so, rather than looking like a table with no blinds");
-        assert.equal(nameOf(state, bbIndex), "Ann", "the big blind still moves on one player");
-    });
-
-    test("a dead small blind still deals a hand, with one blind in the middle", () => {
-        const state = table(1);
-        Betting.beginHand(state);
-        leave(state, 3);
-        HoldemState.startNextHand(state);
-        Betting.beginHand(state);
-
-        assert.equal(state.bettingOpen, true, "the hand goes ahead");
-        const posted = state.seats.reduce((sum, p) => sum + Betting.committed(p), 0);
-        assert.equal(posted, state.bigBlind, "just the big blind, and nothing conjured to stand in for the small");
-        assert.equal(state.currentBet, state.bigBlind);
-        assert.ok(state.actingSeatIndex !== null, "and somebody is on the clock");
-    });
-
-    test("somebody leaving from anywhere else changes nothing", () => {
-        const state = table(1);                 // button Ben, small Cal, big Dee
-        Betting.beginHand(state);
-
-        leave(state, 0);                        // Ann, who was under the gun
-        HoldemState.startNextHand(state);
-
-        assert.equal(state.dealerSeatIndex, 2, "the button passes to Cal exactly as before");
-        assert.equal(state.deadButton, false);
-        assert.equal(state.deadSmallBlind, false);
-        assert.deepEqual(blinds(state), { sb: "Dee", bb: "Ben" });
-    });
-});
-
-describe("the ordinary rotation is untouched", () => {
-    test("a full table passes the button one player at a time", () => {
-        const state = table(0);
-        const seen = [];
-        for (let hand = 0; hand < 8; hand++) {
-            Betting.beginHand(state);
-            seen.push(blinds(state).bb);
-            HoldemState.startNextHand(state);
-        }
-        assert.deepEqual(seen, ["Cal", "Dee", "Ann", "Ben", "Cal", "Dee", "Ann", "Ben"],
-            "two clean orbits, everybody paying one big blind per orbit");
-        assert.equal(state.deadButton, false);
-        assert.equal(state.deadSmallBlind, false);
-    });
-
-    test("players spread thinly around a big table don't create dead positions", () => {
-        // Three players in nine chairs. The chairs between them were never in the
-        // rotation, so holding to seats there would post blinds to nobody hand after
-        // hand — which is why the button follows players, not chairs, by default.
-        const state = makeTable({ seatCount: 9, seated: [0, 4, 7], stack: 200, dealerSeatIndex: 0 });
-        ["Ann", "", "", "", "Ben", "", "", "Cal"].forEach((n, i) => { state.seats[i].name = n; });
-
-        const seen = [];
-        for (let hand = 0; hand < 6; hand++) {
-            Betting.beginHand(state);
-            const { sbIndex, bbIndex } = HoldemState.getBlindSeats(state);
-            assert.ok(state.seats[sbIndex].inHand, "a real player posts the small blind");
-            assert.ok(state.seats[bbIndex].inHand, "and a real player the big");
-            seen.push(nameOf(state, bbIndex));
-            HoldemState.startNextHand(state);
-        }
-        assert.deepEqual(seen, ["Cal", "Ann", "Ben", "Cal", "Ann", "Ben"], "one big blind each per orbit");
-    });
-
-    test("pressing next hand twice without dealing just passes the button along", () => {
-        const state = table(0);
-        Betting.beginHand(state);
-
-        HoldemState.startNextHand(state);
-        assert.equal(state.dealerSeatIndex, 1);
-        HoldemState.startNextHand(state);
-        assert.equal(state.dealerSeatIndex, 2, "and doesn't rotate off the same hand twice");
-    });
-});
-
-describe("the rule knows where it stops", () => {
-    test("down to two players, heads-up takes over and nothing is left dead", () => {
-        const state = table(1);
-        Betting.beginHand(state);
-        leave(state, 2);
-        leave(state, 3);                        // both blinds walk at once
-
-        HoldemState.startNextHand(state);
-        Betting.beginHand(state);
-
-        const { sbIndex, headsUp } = HoldemState.getBlindSeats(state);
-        assert.equal(headsUp, true);
-        assert.equal(sbIndex, state.dealerSeatIndex, "heads-up the button posts the small blind");
-        assert.ok(state.seats[state.dealerSeatIndex].inHand, "and the button is on a player again");
-    });
-
-    test("a button stranded by accident is still rescued", () => {
-        // Not the dead button: nobody left out of the blinds, the chair the button is
-        // on just emptied. That one does want putting back on a player.
-        const state = table(3);
-        state.seats[3].inHand = false;
-        HoldemState.ensureButtonOnPlayer(state);
-        assert.ok(state.seats[state.dealerSeatIndex].inHand);
-    });
-
-    test("moving the button by hand clears the dead positions", () => {
-        const state = table(1);
-        Betting.beginHand(state);
-        leave(state, 2);
-        HoldemState.startNextHand(state);
-        assert.equal(state.deadButton, true);
-
-        // What the seat menu's "Give the button" does.
-        state.dealerSeatIndex = 0;
-        state.deadButton = false;
-        state.deadSmallBlind = false;
-        Betting.beginHand(state);
-
-        const { sbIndex } = HoldemState.getBlindSeats(state);
-        assert.ok(state.seats[sbIndex].inHand, "a real small blind again, where the dealer put it");
-    });
-
-    test("naming a blind by hand overrules a dead one", () => {
-        const state = table(1);
-        Betting.beginHand(state);
-        leave(state, 3);
-        HoldemState.startNextHand(state);
-        assert.equal(state.deadSmallBlind, true);
-
-        state.blindOverride = { sbIndex: 1, bbIndex: 0 };
-        const { sbIndex, bbIndex, manual } = HoldemState.getBlindSeats(state);
-        assert.equal(manual, true);
-        assert.equal(sbIndex, 1, "the dealer's word beats the rule");
-        assert.equal(bbIndex, 0);
-    });
-
-    test("a table saved before any of this reads as nothing dead", () => {
-        const state = table(0);
-        const parsed = JSON.parse(JSON.stringify(state));
-        delete parsed.deadButton;
-        delete parsed.deadSmallBlind;
-        delete parsed.postedBlinds;
-
-        const store = new Map([[HoldemState.STORAGE_KEY, JSON.stringify(parsed)]]);
-        globalThis.localStorage = {
-            getItem: key => (store.has(key) ? store.get(key) : null),
-            setItem: (key, value) => store.set(key, value),
-            removeItem: key => store.delete(key),
-        };
-
-        const loaded = HoldemState.load();
-        assert.equal(loaded.deadButton, false);
-        assert.equal(loaded.deadSmallBlind, false);
-        assert.equal(loaded.postedBlinds, null);
-
-        HoldemState.startNextHand(loaded);
-        assert.ok(loaded.seats[loaded.dealerSeatIndex].inHand, "and rotates the ordinary way");
-        delete globalThis.localStorage;
-    });
-});
-
-describe("chips are not invented or lost by any of it", () => {
-    test("posting one blind instead of two moves chips and doesn't make them", () => {
-        // Measured across the deal, which is the step that touches stacks. A hand with
-        // a dead small blind has one blind in the middle instead of two — the danger is
-        // a null small blind being treated as a zero-cost posting somewhere, or the big
-        // blind quietly covering for it.
-        const state = table(1);
-        const chips = s => s.seats.reduce(
-            (sum, p) => sum + Betting.stackOf(s, p) + Betting.handTotal(p), 0);
-
-        Betting.beginHand(state);
-        leave(state, 3);                        // the big blind goes, small blind dies
-
-        for (let hand = 0; hand < 4; hand++) {
-            HoldemState.startNextHand(state);
-            const before = chips(state);
-            Betting.beginHand(state);
-            assert.equal(chips(state), before, `the deal drifted the count on hand ${hand + 1}`);
-        }
-    });
-
-    test("a dead small blind takes exactly one blind out of one stack", () => {
-        const state = table(1);
-        Betting.beginHand(state);
-        leave(state, 3);
-        HoldemState.startNextHand(state);
-
-        const stacks = () => state.seats.map(p => Betting.stackOf(state, p));
-        const before = stacks();
-        Betting.beginHand(state);
-        const after = stacks();
-
-        const paid = before.map((v, i) => v - after[i]).filter(d => d !== 0);
-        assert.deepEqual(paid, [state.bigBlind], "one player, one big blind, nobody else touched");
-    });
-});

tests/holdem/dealStep.test.js

@@ -1,205 +0,0 @@
-// Dealing and betting are two decisions, and fusing them meant the table guessed.
-//
-// The moment between hands is when people sit down, stand up and argue about whose
-// turn it is. With blinds posted the instant the previous hand ended, the blind
-// badges recomputed off `inHand` while the committed chips stayed frozen — so seating
-// somebody produced a big blind who had posted nothing.
-const { test, describe } = require("node:test");
-const assert = require("node:assert/strict");
-const { Betting, HoldemState, makeTable, chipsOnTable } = require("./load");
-
-const postedBy = state => state.seats
-    .map((p, i) => (Betting.committed(p) > 0 ? i : null))
-    .filter(i => i !== null);
-
-describe("the table waits to be dealt", () => {
-    test("finishing a hand leaves the next one un-dealt", () => {
-        const state = makeTable({ seatCount: 6, seated: [0, 1, 2], dealerSeatIndex: 0 });
-        Betting.beginHand(state);
-        assert.equal(state.bettingOpen, true);
-
-        HoldemState.startNextHand(state);
-
-        assert.equal(state.bettingOpen, false, "the next hand hasn't been dealt");
-        assert.equal(state.actingSeatIndex, null, "nobody is on the clock");
-        assert.deepEqual(postedBy(state), [], "and no blind has been committed");
-    });
-
-    test("no money moves until the dealer deals", () => {
-        const state = makeTable({ seatCount: 6, seated: [0, 1, 2], dealerSeatIndex: 0 });
-        const start = chipsOnTable(state);
-        HoldemState.startNextHand(state);
-
-        assert.equal(chipsOnTable(state), start);
-        assert.equal(HoldemState.totalPot(state), 0);
-
-        Betting.beginHand(state);
-        assert.equal(state.bettingOpen, true);
-        assert.equal(postedBy(state).length, 2, "now the blinds are in");
-        assert.equal(chipsOnTable(state), start, "and nothing was created doing it");
-    });
-});
-
-describe("setting the table costs nothing", () => {
-    test("seating a player before the deal changes who posts", () => {
-        const state = makeTable({ seatCount: 6, seated: [0, 1, 2], dealerSeatIndex: 0 });
-        HoldemState.startNextHand(state);
-
-        const before = Betting.blindPreview(state);
-        state.seats[3].inHand = true;
-        state.seats[3].stack = 100;
-        const after = Betting.blindPreview(state);
-
-        assert.notDeepEqual(
-            [before.sbIndex, before.bbIndex],
-            [after.sbIndex, after.bbIndex],
-            "the preview follows the new table"
-        );
-        assert.deepEqual(postedBy(state), [], "and still nothing is committed");
-
-        Betting.beginHand(state);
-        assert.deepEqual(postedBy(state).sort(), [after.sbIndex, after.bbIndex].sort(),
-            "the money lands where the preview said it would");
-    });
-
-    test("removing a player before the deal can't strand their blind", () => {
-        // The old failure: take out the big blind after the hand had begun and their
-        // chips stayed in the pot while the badge moved to somebody who'd posted
-        // nothing. Before the deal there is nothing to strand.
-        const state = makeTable({ seatCount: 6, seated: [0, 1, 2, 3], dealerSeatIndex: 0 });
-        HoldemState.startNextHand(state);
-
-        const doomed = Betting.blindPreview(state).bbIndex;
-        state.seats[doomed].inHand = false;
-
-        assert.deepEqual(postedBy(state), [], "nobody has posted, so nothing is stranded");
-
-        Betting.beginHand(state);
-        const posted = postedBy(state);
-        assert.ok(!posted.includes(doomed), "the player who left posts nothing");
-        posted.forEach(i => assert.ok(state.seats[i].inHand, "only players in the hand post"));
-    });
-
-    test("moving the button before the deal just moves it", () => {
-        const state = makeTable({ seatCount: 8, seated: [0, 2, 4, 6], dealerSeatIndex: 0 });
-        const start = chipsOnTable(state);
-        HoldemState.startNextHand(state);
-
-        [2, 4, 6, 0].forEach(seat => {
-            state.dealerSeatIndex = seat;
-            assert.deepEqual(postedBy(state), [], `passing the button to seat ${seat + 1} posted something`);
-            assert.equal(chipsOnTable(state), start);
-        });
-
-        Betting.beginHand(state);
-        assert.equal(chipsOnTable(state), start, "dealing moves chips between stacks, not into thin air");
-    });
-
-    test("what the preview promises is what gets posted", () => {
-        const state = makeTable({ seatCount: 9, seated: [1, 3, 6, 8], dealerSeatIndex: 1 });
-        HoldemState.startNextHand(state);
-
-        const preview = Betting.blindPreview(state);
-        Betting.beginHand(state);
-
-        assert.equal(Betting.committed(state.seats[preview.sbIndex]), preview.smallBlind);
-        assert.equal(Betting.committed(state.seats[preview.bbIndex]), preview.bigBlind);
-    });
-
-    test("there's nothing to preview without two players", () => {
-        const alone = makeTable({ seatCount: 6, seated: [2] });
-        HoldemState.startNextHand(alone);
-        assert.equal(Betting.blindPreview(alone), null);
-
-        const empty = makeTable({ seatCount: 6, seated: [] });
-        HoldemState.startNextHand(empty);
-        assert.equal(Betting.blindPreview(empty), null);
-    });
-
-    test("a hand-picked blind shows up in the preview", () => {
-        const state = makeTable({ seatCount: 6, seated: [0, 1, 2, 3], dealerSeatIndex: 0 });
-        HoldemState.startNextHand(state);
-        state.blindOverride = { sbIndex: 3, bbIndex: 0 };
-
-        const preview = Betting.blindPreview(state);
-        assert.equal(preview.manual, true);
-        assert.equal(preview.sbIndex, 3);
-        assert.equal(preview.bbIndex, 0);
-    });
-});
-
-describe("a table saved mid-hand comes back mid-hand", () => {
-    const loadWith = saved => {
-        const original = globalThis.localStorage;
-        globalThis.localStorage = { getItem: () => JSON.stringify(saved), setItem: () => {}, removeItem: () => {} };
-        const state = HoldemState.load();
-        globalThis.localStorage = original;
-        return state;
-    };
-
-    test("chips already committed mean the betting was open", () => {
-        const state = loadWith({
-            seats: [{ id: "a", name: "Ann", inHand: true, committed: 2 }, { id: "b", name: "Ben", inHand: true, committed: 0 }],
-            handNumber: 3,
-        });
-        assert.equal(state.bettingOpen, true, "otherwise it would offer to deal over a live hand");
-    });
-
-    test("somebody on the clock means the betting was open", () => {
-        const state = loadWith({
-            seats: [{ id: "a", inHand: true }, { id: "b", inHand: true }],
-            actingSeatIndex: 1, handNumber: 2,
-        });
-        assert.equal(state.bettingOpen, true);
-    });
-
-    test("a quiet table comes back waiting to be dealt", () => {
-        const state = loadWith({
-            seats: [{ id: "a", inHand: true }, { id: "b", inHand: true }],
-            actingSeatIndex: null, handNumber: 5,
-        });
-        assert.equal(state.bettingOpen, false);
-    });
-});
-
-describe("the preview tells the truth about the button", () => {
-    test("a button parked on an empty chair is answered for where it will be", () => {
-        // The preview used to read the button where it sat, while dealing relocated it
-        // first — so it promised one pair of blinds and produced another.
-        const state = makeTable({ seatCount: 6, seated: [1, 2, 3], dealerSeatIndex: 0 });
-        state.bettingOpen = false;
-        assert.equal(state.seats[0].inHand, false, "the button is on an empty chair");
-
-        const preview = Betting.blindPreview(state);
-        assert.equal(preview.buttonMoves, true, "and the preview knows it will move");
-
-        Betting.beginHand(state);
-
-        assert.equal(Betting.committed(state.seats[preview.sbIndex]), preview.smallBlind);
-        assert.equal(Betting.committed(state.seats[preview.bbIndex]), preview.bigBlind);
-        assert.equal(state.dealerSeatIndex, preview.buttonIndex, "and it moved where it said");
-    });
-
-    test("asking where the button will be doesn't move it", () => {
-        const state = makeTable({ seatCount: 6, seated: [1, 2, 3], dealerSeatIndex: 0 });
-        state.bettingOpen = false;
-
-        Betting.blindPreview(state);
-        Betting.blindPreview(state);
-
-        assert.equal(state.dealerSeatIndex, 0, "the preview is a question, not an action");
-    });
-
-    test("a button already on a player is left alone", () => {
-        const state = makeTable({ seatCount: 6, seated: [0, 1, 2], dealerSeatIndex: 0 });
-        state.bettingOpen = false;
-        const preview = Betting.blindPreview(state);
-        assert.equal(preview.buttonMoves, false);
-        assert.equal(preview.buttonIndex, 0);
-    });
-
-    test("buttonSeatForDeal copes with a table nobody is sitting at", () => {
-        const state = makeTable({ seatCount: 6, seated: [] });
-        assert.equal(HoldemState.buttonSeatForDeal(state), state.dealerSeatIndex);
-    });
-});

tests/holdem/discardedPot.test.js

@@ -1,94 +0,0 @@
-// Chips the dealer took off the table on purpose.
-//
-// Starting the next hand with money still in the middle destroys it — the tool asks
-// first and says so afterwards. What it didn't do was remember, so the bank check saw
-// only that chips were gone and reported them as missing.
-const test = require("node:test");
-const assert = require("node:assert");
-const { HoldemState, Money, makeTable } = require("./load");
-
-const table = () => {
-    const state = makeTable({ seatCount: 6, seated: [0, 1, 2, 3], stack: 200 });
-    state.seats.slice(0, 4).forEach(player => { player.buyIns = 200; });
-    return state;
-};
-
-test("a table with nothing thrown away balances as before", () => {
-    const bank = HoldemState.bankReconciliation(table());
-
-    assert.equal(bank.balanced, true);
-    assert.equal(bank.discarded, 0);
-});
-
-test("chips that went missing are still reported", () => {
-    // The check exists for this: cash in the box with no chips to match it.
-    const state = table();
-    state.seats[0].stack = 150;
-
-    const bank = HoldemState.bankReconciliation(state);
-    assert.equal(bank.balanced, false);
-    assert.equal(bank.difference, -50);
-});
-
-test("an abandoned pot is accounted for rather than counted as missing", () => {
-    const state = table();
-    state.seats[1].stack = 199;
-    state.seats[2].stack = 198;
-    state.seats[3].stack = 198;
-    state.discarded = 5;
-
-    const bank = HoldemState.bankReconciliation(state);
-    assert.equal(bank.chipsInPlay, 795);
-    assert.equal(bank.discarded, 5);
-    assert.equal(bank.balanced, true, "the box knows exactly where that $5 went");
-});
-
-test("throwing a pot away doesn't hide a real shortfall underneath it", () => {
-    const state = table();
-    state.seats[1].stack = 199;
-    state.seats[2].stack = 198;
-    state.seats[3].stack = 148;   // $50 genuinely unaccounted for as well
-    state.discarded = 5;
-
-    const bank = HoldemState.bankReconciliation(state);
-    assert.equal(bank.balanced, false);
-    assert.equal(bank.difference, -50);
-});
-
-test("a nonsense discarded value can't move the answer", () => {
-    const state = table();
-    state.discarded = -100;
-    assert.equal(HoldemState.bankReconciliation(state).discarded, 0);
-
-    state.discarded = "not a number";
-    assert.equal(HoldemState.bankReconciliation(state).discarded, 0);
-});
-
-test("a table saved before this existed reads as nothing thrown away", () => {
-    const saved = JSON.stringify(table());
-    const parsed = JSON.parse(saved);
-    delete parsed.discarded;
-
-    const store = new Map([[HoldemState.STORAGE_KEY, JSON.stringify(parsed)]]);
-    globalThis.localStorage = {
-        getItem: key => (store.has(key) ? store.get(key) : null),
-        setItem: (key, value) => store.set(key, value),
-        removeItem: key => store.delete(key),
-    };
-
-    const loaded = HoldemState.load();
-    assert.equal(loaded.discarded, 0);
-    assert.equal(HoldemState.bankReconciliation(loaded).balanced, true);
-    delete globalThis.localStorage;
-});
-
-test("the amounts still add up the way the panel shows them", () => {
-    const state = table();
-    state.seats[1].stack = 199;
-    state.seats[2].stack = 198;
-    state.seats[3].stack = 198;
-    state.discarded = 5;
-
-    const bank = HoldemState.bankReconciliation(state);
-    assert.equal(Money.round(bank.chipsInPlay + bank.discarded), bank.cashIn);
-});

tests/holdem/exportNotes.test.js

@@ -1,97 +0,0 @@
-// The things the dealer wrote down, in the file they hand over.
-//
-// The export already carried the hands, the standings and the settle-up. It didn't
-// carry either of the two places a dealer types context — the per-seat fields and the
-// table's own notes — so the one place an IOU was written down was the one place it
-// couldn't leave.
-const test = require("node:test");
-const assert = require("node:assert");
-const { HandHistoryExport, HoldemState, makeTable } = require("./load");
-
-const tableWithNotes = () => {
-    const state = makeTable({ seatCount: 6, seated: [0, 1, 2], stack: 200 });
-    ["Ann", "Ben", "Cal"].forEach((name, i) => {
-        state.seats[i].name = name;
-        state.seats[i].buyIns = 200;
-    });
-    state.seats[0].customFields = [
-        { label: "Seat rent", value: "paid to 2am" },
-        { label: "Venmo", value: "@ann" },
-    ];
-    state.seats[1].customFields = [{ label: "IOU", value: "$20 to Ann" }];
-    return state;
-};
-
-test("a seat's own fields ride along with its standings row", () => {
-    const state = tableWithNotes();
-    const csv = HandHistoryExport.toCsv([], HoldemState.sessionStandings(state));
-
-    assert.match(csv, /Seat rent: paid to 2am; Venmo: @ann/);
-    assert.match(csv, /IOU: \$20 to Ann/);
-});
-
-test("the money columns keep their order, with notes on the end", () => {
-    const state = tableWithNotes();
-    const csv = HandHistoryExport.toCsv([], HoldemState.sessionStandings(state));
-
-    assert.match(csv, /Player,Paid In,Won,Net,Bought In,Chips Now,Up\/Down,Notes/);
-});
-
-test("a seat with nothing written against it gets an empty cell, not the word undefined", () => {
-    const state = tableWithNotes();
-    const csv = HandHistoryExport.toCsv([], HoldemState.sessionStandings(state));
-    const calRow = csv.split("\r\n").find(line => line.startsWith("Cal,"));
-
-    assert.ok(calRow, "Cal should have a row");
-    assert.ok(calRow.endsWith(","), `expected an empty last cell, got ${calRow}`);
-    assert.ok(!/undefined|null/.test(calRow));
-});
-
-test("a blank label or value doesn't produce a stray colon", () => {
-    const state = tableWithNotes();
-    state.seats[2].customFields = [{ label: "Note", value: "" }, { label: "", value: "" }];
-    const csv = HandHistoryExport.toCsv([], HoldemState.sessionStandings(state));
-    const calRow = csv.split("\r\n").find(line => line.startsWith("Cal,"));
-
-    assert.match(calRow, /Note/);
-    assert.ok(!/;\s*;/.test(calRow), "an entirely blank field shouldn't take a slot");
-});
-
-test("the table's notes are in the file", () => {
-    const state = tableWithNotes();
-    state.notes = "High-hand promo until midnight.";
-    const csv = HandHistoryExport.toCsv([], HoldemState.sessionStandings(state), { notes: state.notes });
-
-    assert.match(csv, /Table Notes/);
-    assert.match(csv, /High-hand promo until midnight\./);
-});
-
-test("a multi-line note survives as one cell", () => {
-    // csvField quotes anything with a line break in it, so the note doesn't turn into
-    // rows a spreadsheet reads as more players.
-    const state = tableWithNotes();
-    const notes = "Line one\nLine two, with a comma\nLine \"three\"";
-    const csv = HandHistoryExport.toCsv([], HoldemState.sessionStandings(state), { notes });
-
-    assert.match(csv, /"Line one\nLine two, with a comma\nLine ""three"""/);
-});
-
-test("no notes means no section, not an empty heading", () => {
-    const state = tableWithNotes();
-    const csv = HandHistoryExport.toCsv([], HoldemState.sessionStandings(state), { notes: "   " });
-
-    assert.ok(!/Table Notes/.test(csv));
-});
-
-test("the export still works with no standings at all", () => {
-    assert.doesNotThrow(() => HandHistoryExport.toCsv([], [], { notes: "just a note" }));
-    const csv = HandHistoryExport.toCsv([], [], { notes: "just a note" });
-    assert.match(csv, /Table Notes/);
-});
-
-test("asking for the standings doesn't change the seats", () => {
-    const state = tableWithNotes();
-    const before = JSON.stringify(state.seats);
-    HoldemState.sessionStandings(state);
-    assert.equal(JSON.stringify(state.seats), before);
-});

tests/holdem/feltRoom.test.js

@@ -1,73 +0,0 @@
-// How tall the felt is allowed to be.
-//
-// The bar is fixed to the bottom of the screen and grows with the hand, so the table
-// has to be told what is left. Everything below is the arithmetic that decides it —
-// the part that can be wrong without anyone noticing until a seat is behind the Fold
-// button.
-const test = require("node:test");
-const { describe } = require("node:test");
-const assert = require("node:assert");
-const { ActionBar } = require("./load");
-
-// window height, bar height, and how far down the page the felt starts.
-const room = (windowHeight, barHeight, top) => ActionBar.feltRoomFor(windowHeight, barHeight, top);
-
-describe("the room left for the felt", () => {
-    test("is what the window has after the bar, the header and the bottom seat", () => {
-        const reserved = ActionBar.SEAT_OVERHANG_PX + ActionBar.FELT_GAP_PX;
-        assert.equal(room(900, 127, 146), 900 - 127 - 146 - reserved);
-    });
-
-    test("shrinks when the bar grows mid-hand", () => {
-        // Side pots make the bar taller exactly when the dealer most needs to see who
-        // is still in.
-        const quiet = room(900, 117, 146);
-        const sidePots = room(900, 172, 146);
-        assert.equal(quiet - sidePots, 55);
-    });
-
-    test("leaves the bottom seat's overhang out of it", () => {
-        // The seat pucks hang below the felt's edge; the felt has to stop short by that
-        // much or the ring ends up in the bar even though the felt doesn't.
-        assert.ok(ActionBar.SEAT_OVERHANG_PX > 30, "half a puck");
-        assert.ok(room(900, 127, 146) < 900 - 127 - 146);
-    });
-});
-
-describe("a window too short to give what was asked", () => {
-    // A phone on its side: 390px tall, 127px of that is the bar and 119px is
-    // everything above the felt. What's left is under 100.
-    const landscape = () => room(390, 127, 119);
-
-    test("gets the measurement, not a comfortable number", () => {
-        // The floor used to be 220px, which this window hasn't got. Holding out for it
-        // put the bottom row of seats 26px inside the action bar — the exact fault the
-        // measurement exists to prevent.
-        assert.ok(landscape() < 150, `${landscape()}px`);
-        assert.ok(landscape() + 119 + 127 <= 390, "the felt still ends above the bar");
-    });
-
-    test("still draws a table rather than a line", () => {
-        assert.equal(ActionBar.feltRoomFor(200, 160, 100), ActionBar.FELT_FLOOR_PX);
-        assert.equal(ActionBar.feltRoomFor(0, 0, 0), ActionBar.FELT_FLOOR_PX);
-    });
-
-    test("never returns something a browser can't lay out", () => {
-        [[390, 300, 200], [100, 90, 90], [-10, 0, 0]].forEach(([h, bar, top]) => {
-            const answer = ActionBar.feltRoomFor(h, bar, top);
-            assert.ok(Number.isFinite(answer) && answer > 0, `${h}/${bar}/${top} gave ${answer}`);
-        });
-    });
-});
-
-describe("a window with room to spare", () => {
-    test("hands over everything that's left, floor or no floor", () => {
-        const reserved = ActionBar.SEAT_OVERHANG_PX + ActionBar.FELT_GAP_PX;
-        assert.equal(room(1000, 127, 146), 1000 - 127 - 146 - reserved);
-        assert.equal(room(1366, 120, 206), 1366 - 120 - 206 - reserved);
-    });
-
-    test("gives a whole number of pixels", () => {
-        assert.equal(room(844.4, 127.6, 223.2) % 1, 0);
-    });
-});

tests/holdem/handHistoryFilter.test.js

@@ -1,123 +0,0 @@
-// Finding one hand in a night of them.
-//
-// What the log is actually opened for is a single hand — the one somebody at the rail
-// is arguing about. A night runs to sixty or more, five at a time in the panel, and
-// there was no way to ask for one: the dealer scrolled and read every row.
-const test = require("node:test");
-const { describe } = require("node:test");
-const assert = require("node:assert");
-const { Render } = require("./load");
-
-const hand = (handNumber, pot, payouts, ledger = []) => ({
-    handNumber, pot, timestamp: Date.now(), payouts, ledger,
-});
-
-// A night as the tool records it: labels carry the cards the wizard was shown.
-const NIGHT = [
-    hand(1, 40, [{ label: "Ann (A♠ K♠)", amount: 40 }], [{ name: "Ann", in: 20 }, { name: "Ben", in: 20 }]),
-    hand(2, 190, [{ label: "Fay", amount: 190 }], [{ name: "Fay", in: 95 }, { name: "Gus", in: 95 }]),
-    hand(12, 19, [{ label: "Ben", amount: 19 }], [{ name: "Ben", in: 10 }, { name: "Ann", in: 9 }]),
-    hand(120, 76, [{ label: "Cal", amount: 38 }, { label: "Dee", amount: 38 }], [{ name: "Cal" }, { name: "Dee" }]),
-];
-
-const found = query => NIGHT.filter(h => Render.handMatchesFilter(h, query)).map(h => h.handNumber);
-
-describe("no filter", () => {
-    test("shows the whole night", () => {
-        assert.deepEqual(found(""), [1, 2, 12, 120]);
-        assert.deepEqual(found("   "), [1, 2, 12, 120]);
-        assert.deepEqual(found(null), [1, 2, 12, 120]);
-    });
-});
-
-describe("by name", () => {
-    test("finds the hand somebody won", () => {
-        assert.deepEqual(found("Fay"), [2]);
-    });
-
-    test("case doesn't matter — nobody types a capital at 2am", () => {
-        assert.deepEqual(found("fay"), [2]);
-        assert.deepEqual(found("FAY"), [2]);
-    });
-
-    test("a name inside a label with cards on it still matches", () => {
-        // The wizard writes the label as "Ann (A♠ K♠)", so the name is a substring
-        // rather than the whole cell.
-        assert.deepEqual(found("ann"), [1]);
-    });
-
-    test("matches what the row shows, not everyone who was in the hand", () => {
-        // Gus is in hand 2's ledger — he paid for it — but the row names the winner,
-        // and searching text the panel doesn't display is a filter that looks broken
-        // even when it's right. Measured on a seven-handed night where nobody folded,
-        // matching the ledger returned 60 of 60 for every name at the table.
-        assert.deepEqual(found("gus"), []);
-    });
-
-    test("a split pot is found by either winner", () => {
-        assert.deepEqual(found("cal"), [120]);
-        assert.deepEqual(found("dee"), [120]);
-    });
-
-    test("a name nobody has finds nothing rather than everything", () => {
-        assert.deepEqual(found("zed"), []);
-    });
-});
-
-describe("by amount", () => {
-    test("finds a pot", () => {
-        assert.deepEqual(found("190"), [2]);
-    });
-
-    test("a dollar sign and commas are ignored", () => {
-        assert.deepEqual(found("$190"), [2]);
-        assert.deepEqual(found("$1,90"), [2], "typed badly, still found");
-    });
-
-    test("finds a payout that isn't the whole pot", () => {
-        assert.deepEqual(found("38"), [120], "half of a chopped $76");
-    });
-
-    test("a partial amount narrows rather than missing", () => {
-        // Half remembering "something around forty" should still get there.
-        assert.deepEqual(found("4"), [1], "$40");
-        assert.deepEqual(found("19"), [2, 12], "the $190 pot and the $19 one");
-    });
-
-    test("a bare number is an exact hand number, not a prefix of one", () => {
-        // Amounts match on their leading digits, because half a remembered figure is
-        // still a lead. Hand numbers don't: typing 12 to mean the hand is a dealer who
-        // knows which hand they want, and dragging 120 and 128 along with it is noise.
-        // "#12" is there for when they do want the prefix.
-        assert.ok(!found("12").includes(120));
-    });
-});
-
-describe("by hand number", () => {
-    test("a bare number matches the hand number as well as amounts", () => {
-        assert.ok(found("12").includes(12));
-    });
-
-    test("a hash pins it to the hand number and nothing else", () => {
-        assert.deepEqual(found("#12"), [12, 120], "12 and 120 both start with 12");
-        assert.deepEqual(found("#2"), [2], "and not the $190 pot of hand 2's neighbours");
-    });
-
-    test("a hash with a number nobody played finds nothing", () => {
-        assert.deepEqual(found("#7"), []);
-    });
-});
-
-describe("odd input can't break it", () => {
-    test("punctuation on its own doesn't match everything", () => {
-        assert.deepEqual(found("$"), [], "no digits and no letters left to match on");
-        assert.deepEqual(found("#"), [1, 2, 12, 120], "an empty hand number is a prefix of them all");
-    });
-
-    test("an entry with pieces missing doesn't throw", () => {
-        const broken = { handNumber: 5, pot: 10 };
-        assert.doesNotThrow(() => Render.handMatchesFilter(broken, "ann"));
-        assert.equal(Render.handMatchesFilter(broken, "ann"), false);
-        assert.equal(Render.handMatchesFilter(broken, "10"), true, "the pot is still findable");
-    });
-});

tests/holdem/historyCache.test.js

@@ -1,118 +0,0 @@
-// The hand-history panel is only rebuilt when its signature changes, which takes a
-// full re-render from ~30ms to ~3ms. The whole saving depends on that signature
-// noticing every way the log can actually change — a stale panel would have the
-// dealer reading last hand's payouts while settling this one.
-const { test, describe } = require("node:test");
-const assert = require("node:assert/strict");
-const { Render, HoldemState, makeTable } = require("./load");
-
-// historySignature() reads Render.state, so point it at a table for each case.
-const signatureOf = state => {
-    Render.state = state;
-    return Render.historySignature();
-};
-
-const tableWithHands = (count) => {
-    const state = makeTable({ seatCount: 4, seated: [0, 1, 2] });
-    for (let i = 0; i < count; i++) {
-        state.seats[0].amountOverride = 2;
-        state.seats[1].amountOverride = 2;
-        HoldemState.recordHand(state, [{ id: state.seats[0].id, label: "Ann", amount: 4 }]);
-    }
-    return state;
-};
-
-describe("the history panel knows when to redraw", () => {
-    test("nothing changes while a hand is being played", () => {
-        const state = tableWithHands(3);
-        const before = signatureOf(state);
-
-        // A whole street of betting touches no part of the log.
-        state.seats[0].committed = 5;
-        state.seats[1].folded = true;
-        state.actingSeatIndex = 2;
-        state.street = "flop";
-
-        assert.equal(signatureOf(state), before, "betting must not force a rebuild");
-    });
-
-    test("settling a hand changes it", () => {
-        const state = tableWithHands(3);
-        const before = signatureOf(state);
-        HoldemState.recordHand(state, [{ id: state.seats[1].id, label: "Ben", amount: 12 }]);
-        assert.notEqual(signatureOf(state), before);
-    });
-
-    test("clearing the history changes it", () => {
-        const state = tableWithHands(5);
-        const before = signatureOf(state);
-        HoldemState.clearHistory(state);
-        assert.notEqual(signatureOf(state), before);
-    });
-
-    test("undoing back to a shorter log changes it", () => {
-        const state = tableWithHands(2);
-        const snapshot = JSON.parse(JSON.stringify(state));
-        HoldemState.recordHand(state, [{ id: state.seats[0].id, label: "Ann", amount: 30 }]);
-        const afterRecord = signatureOf(state);
-
-        // The undo path swaps the state's contents in place.
-        Object.keys(state).forEach(k => delete state[k]);
-        Object.assign(state, snapshot);
-
-        assert.notEqual(signatureOf(state), afterRecord, "an undone hand must disappear from the panel");
-    });
-
-    test("two hands that differ only in payout are told apart", () => {
-        const a = tableWithHands(1);
-        const b = tableWithHands(1);
-        // Same count and hand number; different pot.
-        b.handHistory[0].pot = a.handHistory[0].pot + 25;
-        assert.notEqual(signatureOf(a), signatureOf(b));
-    });
-
-    test("the hand counter moving on changes it", () => {
-        // The counter badge is drawn by the same function, so a new hand number has
-        // to invalidate even when the log itself is untouched.
-        const state = tableWithHands(2);
-        const before = signatureOf(state);
-        state.handNumber += 1;
-        assert.notEqual(signatureOf(state), before);
-    });
-
-    test("an empty log has a stable signature of its own", () => {
-        const state = makeTable({ seatCount: 4, seated: [0, 1] });
-        const first = signatureOf(state);
-        assert.equal(signatureOf(state), first);
-
-        HoldemState.recordHand(state, [{ id: state.seats[0].id, label: "Ann", amount: 4 }]);
-        assert.notEqual(signatureOf(state), first, "the first hand ever must draw the panel");
-    });
-});
-
-describe("the hand-time cache", () => {
-    test("the same timestamp is only formatted once, and formats the same", () => {
-        Render.handTimeCache.clear();
-        const stamp = Date.UTC(2026, 8, 1, 15, 4);
-        const first = Render.formatHandTime(stamp);
-        assert.equal(Render.handTimeCache.size, 1);
-
-        const second = Render.formatHandTime(stamp);
-        assert.equal(second, first);
-        assert.equal(Render.handTimeCache.size, 1, "not re-formatted");
-    });
-
-    test("different timestamps still format differently", () => {
-        Render.handTimeCache.clear();
-        const a = Render.formatHandTime(Date.UTC(2026, 8, 1, 15, 4));
-        const b = Render.formatHandTime(Date.UTC(2026, 8, 1, 18, 47));
-        assert.notEqual(a, b);
-        assert.equal(Render.handTimeCache.size, 2);
-    });
-
-    test("a nonsense timestamp doesn't throw", () => {
-        Render.handTimeCache.clear();
-        assert.doesNotThrow(() => Render.formatHandTime(undefined));
-        assert.doesNotThrow(() => Render.formatHandTime("not a date"));
-    });
-});

tests/holdem/invariants.test.js

@@ -1,213 +0,0 @@
-// Randomised whole-hand play against the invariants a dealer would notice being broken.
-//
-// These ran once, by hand, in a browser console while the betting engine was being
-// fixed, and then went away with the tab. The bugs they caught (blinds posted to empty
-// chairs, the button skipping players, heads-up acting out of order) are all cases you
-// only hit on a particular table shape, so a fixed set of examples misses them. Keeping
-// the generator means the next change gets checked against the same thousand tables.
-const { test, describe } = require("node:test");
-const assert = require("node:assert/strict");
-const { Betting, PotCalculator, HoldemState, Money, makeTable, chipsOnTable, contributions } = require("./load");
-
-// Deterministic PRNG: a failure has to be reproducible from the seed printed with it,
-// otherwise a randomised suite is just a flaky one.
-function rng(seed) {
-    let s = seed >>> 0;
-    return () => {
-        s = (s * 1664525 + 1013904223) >>> 0;
-        return s / 4294967296;
-    };
-}
-
-// Plays one hand to completion with random but legal-ish dealer input.
-function playHand(random) {
-    const seatCount = 2 + Math.floor(random() * 9);
-    const seatIndexes = [...Array(seatCount).keys()];
-    const seated = seatIndexes.filter(() => random() < 0.7);
-    if (seated.length < 2) seated.push(...seatIndexes.filter(i => !seated.includes(i)).slice(0, 2 - seated.length));
-
-    const bigBlind = [2, 5, 0.5][Math.floor(random() * 3)];
-    const state = makeTable({
-        seatCount,
-        seated,
-        stack: 0,
-        smallBlind: bigBlind / 2,
-        bigBlind,
-        dealerSeatIndex: Math.floor(random() * seatCount),
-    });
-
-    // Varied stack depths, so short stacks and side pots actually happen.
-    seated.forEach(i => {
-        state.seats[i].stack = Money.round(bigBlind * (1 + Math.floor(random() * 60)));
-    });
-
-    const startingChips = chipsOnTable(state);
-    Betting.beginHand(state);
-
-    let guard = 0;
-    while (!Betting.isHandOver(state) && state.street !== "done" && guard++ < 400) {
-        if (state.actingSeatIndex === null) {
-            if (state.street === "river" || !Betting.canStillBet(state)) break;
-            Betting.closeStreet(state);
-            continue;
-        }
-
-        const index = state.actingSeatIndex;
-        const player = state.seats[index];
-        const toCall = Betting.toCall(state, player);
-        const roll = random();
-
-        if (roll < 0.15) Betting.fold(state, index);
-        else if (roll < 0.25) Betting.allIn(state, index);
-        else if (toCall > 0) Betting.call(state, index);
-        else if (roll < 0.75) Betting.check(state, index);
-        else Betting.raiseTo(state, index, Betting.minRaiseTo(state));
-    }
-
-    Betting.sweepToHandTotals(state);
-    return { state, startingChips, seated };
-}
-
-describe("randomised hands hold the dealer's invariants", () => {
-    const HANDS = 1000;
-
-    test(`${HANDS} hands never create or destroy a chip`, () => {
-        const random = rng(20260901);
-        for (let hand = 0; hand < HANDS; hand++) {
-            const { state, startingChips } = playHand(random);
-            assert.equal(
-                chipsOnTable(state),
-                startingChips,
-                `hand ${hand}: chips on the table changed during play`
-            );
-        }
-    });
-
-    test(`${HANDS} hands: pots plus uncalled returns always equal the money in`, () => {
-        const random = rng(778899);
-        let sidePotHands = 0;
-        let returnHands = 0;
-
-        for (let hand = 0; hand < HANDS; hand++) {
-            const { state } = playHand(random);
-            const players = contributions(state);
-            const inThePot = players.reduce((sum, p) => sum + p.contribution, 0);
-            if (inThePot <= 0) continue;
-
-            // Fold flags can leave nobody live, which the calculator deliberately
-            // refuses to guess at — that's a dealer correction, not an invariant.
-            if (players.every(p => p.folded)) continue;
-
-            const layered = PotCalculator.layers(players).reduce((s, l) => s + l.amount, 0);
-            const returned = PotCalculator.uncalledReturns(players).reduce((s, r) => s + r.amount, 0);
-
-            assert.equal(
-                Money.toCents(layered + returned),
-                Money.toCents(inThePot),
-                `hand ${hand}: pot breakdown doesn't add up to what went in`
-            );
-
-            if (PotCalculator.layers(players).length > 1) sidePotHands++;
-            if (returned > 0) returnHands++;
-        }
-
-        assert.ok(sidePotHands > 20, `expected side pots to occur; saw ${sidePotHands}`);
-        assert.ok(returnHands > 20, `expected uncalled bets to occur; saw ${returnHands}`);
-    });
-
-    test(`${HANDS} hands: what's left after returns is money somebody actually matched`, () => {
-        // The rule the pot breakdown rests on: you are only called up to what somebody
-        // else was willing to put in. Once the uncalled chips are handed back, no
-        // player should still be sitting above every other player at the table.
-        //
-        // A single-eligible pot is *not* the thing to look for here — that's legitimate
-        // when a player called and then folded, leaving dead money one contender
-        // collects. The bug this guards against is subtler: chips nobody ever matched
-        // being dressed up as a pot to play for.
-        const random = rng(13579);
-        for (let hand = 0; hand < HANDS; hand++) {
-            const { state } = playHand(random);
-            const players = contributions(state);
-            if (players.every(p => p.folded)) continue;
-
-            const returns = PotCalculator.uncalledReturns(players);
-            assert.ok(returns.length <= 1, `hand ${hand}: only the biggest bet can go uncalled`);
-
-            returns.forEach(r => {
-                const player = players.find(p => p.id === r.id);
-                assert.ok(r.amount <= player.contribution + 0.001, `hand ${hand}: returned more than was put in`);
-            });
-
-            const returned = new Map(returns.map(r => [r.id, r.amount]));
-            const capped = players.map(p => Money.toCents(p.contribution - (returned.get(p.id) || 0)));
-
-            capped.forEach((cents, index) => {
-                const others = capped.filter((_, i) => i !== index);
-                const mostAnyoneElsePaid = others.length ? Math.max(...others) : 0;
-                assert.ok(
-                    cents <= mostAnyoneElsePaid,
-                    `hand ${hand}: a player is still ${Money.fromCents(cents - mostAnyoneElsePaid)} ` +
-                    `above everyone else after returns — that money was never matched`
-                );
-            });
-        }
-    });
-
-    test(`${HANDS} hands: paying the pot out settles it exactly`, () => {
-        const random = rng(24680);
-        for (let hand = 0; hand < HANDS; hand++) {
-            const { state } = playHand(random);
-            const players = contributions(state);
-            if (players.every(p => p.folded)) continue;
-
-            // Take the uncalled money off first, the way the dealer would.
-            const returned = new Map(PotCalculator.uncalledReturns(players).map(r => [r.id, r.amount]));
-            const contested = players.map(p => ({
-                ...p,
-                contribution: Money.round(p.contribution - (returned.get(p.id) || 0)),
-            }));
-
-            let entries = PotCalculator.buildEntries(contested);
-            const potBefore = PotCalculator.totalPot(entries);
-            let paidOut = 0;
-            let rounds = 0;
-
-            while (PotCalculator.getContenders(entries).length > 0 && rounds++ < 30) {
-                const contenders = PotCalculator.getContenders(entries);
-                const winner = contenders[Math.floor(random() * contenders.length)];
-                const result = PotCalculator.resolveRound(entries, [winner.id]);
-                paidOut += result.perWinner.reduce((s, w) => s + w.amount, 0);
-                entries = result.updatedEntries;
-            }
-
-            assert.equal(
-                Money.toCents(paidOut),
-                Money.toCents(potBefore),
-                `hand ${hand}: paying out the pot left ${potBefore - paidOut} unaccounted for`
-            );
-        }
-    });
-
-    test(`${HANDS} hands: the button and blinds land on real players`, () => {
-        const random = rng(112233);
-        for (let hand = 0; hand < HANDS; hand++) {
-            const seatCount = 2 + Math.floor(random() * 9);
-            const seated = [...Array(seatCount).keys()].filter(() => random() < 0.6);
-            if (seated.length < 2) continue;
-
-            const state = makeTable({ seatCount, seated, dealerSeatIndex: Math.floor(random() * seatCount) });
-            HoldemState.advanceButton(state);
-            assert.ok(state.seats[state.dealerSeatIndex].inHand, `hand ${hand}: button on an empty chair`);
-
-            const { sbIndex, bbIndex, headsUp } = HoldemState.getBlindSeats(state);
-            assert.ok(state.seats[sbIndex].inHand, `hand ${hand}: small blind on an empty chair`);
-            assert.ok(state.seats[bbIndex].inHand, `hand ${hand}: big blind on an empty chair`);
-            assert.notEqual(sbIndex, bbIndex, `hand ${hand}: both blinds on one player`);
-
-            if (seated.length === 2) {
-                assert.ok(headsUp, `hand ${hand}: two players should be heads-up`);
-                assert.equal(sbIndex, state.dealerSeatIndex, `hand ${hand}: heads-up button posts the small blind`);
-            }
-        }
-    });
-});

tests/holdem/load.js

@@ -1,92 +0,0 @@
-// Loads the dealer's browser modules into Node so they can be tested directly.
-//
-// The modules are plain script-tag files: each one declares a `const` namespace and
-// ends with a `module.exports` guard. In the browser they find each other as globals,
-// so the same names have to exist on `globalThis` here or `Betting` can't reach
-// `HoldemState`. Load order matches the <script> order in TexasHoldem.cshtml.
-const path = require("path");
-
-const SRC = path.join(__dirname, "..", "..", "JoshHeaps.Net", "wwwroot", "js", "casino", "holdem");
-
-function load(name) {
-    const mod = require(path.join(SRC, `${name}.js`));
-    globalThis[name.charAt(0).toUpperCase() + name.slice(1)] = mod;
-    return mod;
-}
-
-const Money = load("money");
-const PotCalculator = load("potCalculator");
-const SplitCalculator = load("splitCalculator");
-const Betting = load("betting");
-const SettleUp = load("settleUp");
-const HandHistoryExport = load("handHistoryExport");
-
-// render.js exports { Render } rather than the namespace directly.
-const Render = require(path.join(SRC, "render.js")).Render;
-globalThis.Render = Render;
-
-// state.js exports `HoldemState`, which doesn't match its filename.
-const HoldemState = require(path.join(SRC, "state.js"));
-globalThis.HoldemState = HoldemState;
-
-// actionBar.js after state, since its own module-level code reaches for neither but
-// its methods reach for both. Loaded last so nothing it touches is still undefined.
-const ActionBar = load("actionBar");
-
-// ---- Table builders ----------------------------------------------------------
-
-// A table with `seatCount` chairs where `seated` (a list of seat indexes) are dealt
-// in with `stack` chips each. Everything else is the app's own defaults, so a test
-// that forgets to set a field gets whatever a real dealer would get.
-function makeTable({ seatCount = 6, seated = null, stack = 100, smallBlind = 1, bigBlind = 2, dealerSeatIndex = 0 } = {}) {
-    const state = HoldemState.createDefault();
-    HoldemState.resizeSeats(state, seatCount);
-    state.smallBlind = smallBlind;
-    state.bigBlind = bigBlind;
-    state.dealerSeatIndex = dealerSeatIndex;
-
-    const sitting = seated || state.seats.map((_, i) => i);
-    state.seats.forEach((player, index) => {
-        player.inHand = sitting.includes(index);
-        player.stack = sitting.includes(index) ? stack : null;
-        player.name = `P${index + 1}`;
-    });
-    return state;
-}
-
-// Total chips the table is accountable for: what's in front of everyone, plus what
-// they've pushed in this street, plus what's already banked into the pot.
-function chipsOnTable(state) {
-    return Money.round(
-        state.seats.reduce(
-            (sum, p) => sum + (Number(p.stack) || 0) + (Number(p.committed) || 0) + (Number(p.amountOverride) || 0),
-            0
-        )
-    );
-}
-
-// Contributions in the shape PotCalculator wants them.
-function contributions(state) {
-    return state.seats
-        .filter(p => p.inHand)
-        .map(p => ({
-            id: p.id,
-            contribution: Betting.handTotal(p),
-            folded: p.folded,
-        }));
-}
-
-module.exports = {
-    Money,
-    Render,
-    HandHistoryExport,
-    PotCalculator,
-    SplitCalculator,
-    SettleUp,
-    Betting,
-    HoldemState,
-    ActionBar,
-    makeTable,
-    chipsOnTable,
-    contributions,
-};

tests/holdem/loadFailure.test.js

@@ -1,114 +0,0 @@
-// What happens when the saved table can't be read.
-//
-// An unreadable save can only become an empty table. What it must not do is become
-// one silently and then get written over by the first edit.
-const test = require("node:test");
-const assert = require("node:assert");
-const { HoldemState } = require("./load");
-
-function withStored(value, { readOnly = false } = {}) {
-    const store = new Map();
-    if (value !== undefined) store.set(HoldemState.STORAGE_KEY, value);
-    globalThis.localStorage = {
-        getItem: key => (store.has(key) ? store.get(key) : null),
-        setItem(key, val) {
-            if (readOnly) throw new Error("QuotaExceededError");
-            store.set(key, val);
-        },
-        removeItem: key => store.delete(key),
-    };
-    return store;
-}
-
-test.beforeEach(() => {
-    HoldemState.loadFailed = false;
-    HoldemState.onLoadFailed = null;
-});
-
-test.after(() => {
-    delete globalThis.localStorage;
-    HoldemState.loadFailed = false;
-    HoldemState.onLoadFailed = null;
-});
-
-test("nothing stored is a new table, not a failure", () => {
-    withStored(undefined);
-    const state = HoldemState.load();
-
-    assert.equal(HoldemState.loadFailed, false);
-    assert.ok(Array.isArray(state.seats));
-});
-
-test("a good save loads and reports nothing", () => {
-    const store = withStored(undefined);
-    const original = HoldemState.createDefault();
-    original.handNumber = 34;
-    HoldemState.save(original);
-
-    const state = HoldemState.load();
-    assert.equal(HoldemState.loadFailed, false);
-    assert.equal(state.handNumber, 34);
-    assert.equal(store.has(HoldemState.RECOVERY_KEY), false);
-});
-
-test("a truncated save is reported rather than silently becoming an empty table", () => {
-    const good = JSON.stringify(HoldemState.createDefault());
-    withStored(good.slice(0, Math.floor(good.length * 0.7)));
-
-    const state = HoldemState.load();
-    assert.equal(HoldemState.loadFailed, true);
-    assert.ok(Array.isArray(state.seats), "it still hands back a usable table");
-});
-
-test("valid JSON of the wrong shape counts as unreadable too", () => {
-    withStored(JSON.stringify({ hello: "world" }));
-
-    HoldemState.load();
-    assert.equal(HoldemState.loadFailed, true);
-});
-
-test("the unreadable copy is kept instead of being written over", () => {
-    // This is the half that matters: whatever a person could have picked out of the
-    // raw JSON used to be gone the moment the dealer touched a seat.
-    const broken = '{"seats":[{"name":"Ann","stack":250},{"name":"Ben"';
-    const store = withStored(broken);
-
-    HoldemState.load();
-
-    assert.equal(store.get(HoldemState.RECOVERY_KEY), broken);
-});
-
-test("a later save doesn't touch the copy that was set aside", () => {
-    const broken = '{"seats":[{"name":"Ann"';
-    const store = withStored(broken);
-
-    const state = HoldemState.load();
-    state.handNumber = 2;
-    HoldemState.save(state);
-
-    assert.equal(store.get(HoldemState.RECOVERY_KEY), broken);
-    assert.notEqual(store.get(HoldemState.STORAGE_KEY), broken);
-});
-
-test("the listener fires once, not on every read", () => {
-    withStored("{not json");
-    let told = 0;
-    HoldemState.onLoadFailed = () => { told++; };
-
-    HoldemState.load();
-    HoldemState.load();
-    HoldemState.load();
-
-    assert.equal(told, 1);
-});
-
-test("no room to keep the copy is not a crash", () => {
-    // Storage that refuses writes is exactly the storage most likely to hand back a
-    // half-written value in the first place.
-    withStored("{not json", { readOnly: true });
-
-    let state;
-    assert.doesNotThrow(() => { state = HoldemState.load(); });
-    assert.ok(Array.isArray(state.seats));
-    assert.equal(HoldemState.loadFailed, true);
-});

tests/holdem/messyTables.test.js

@@ -1,260 +0,0 @@
-// Home games are messy. People walk up mid-hand, storm off mid-hand, argue about
-// whose blind it is, and pass the button round three times before anyone deals.
-// These are the cases the positional rules quietly get wrong.
-const { test, describe } = require("node:test");
-const assert = require("node:assert/strict");
-const { Betting, HoldemState, PotCalculator, Money, makeTable, chipsOnTable, contributions } = require("./load");
-
-const potOf = state => HoldemState.totalPot(state);
-
-describe("a player leaves in the middle of a hand", () => {
-    test("their chips stay in the pot", () => {
-        const state = makeTable({ seatCount: 6, seated: [0, 1, 2, 3], dealerSeatIndex: 0 });
-        Betting.beginHand(state);
-        Betting.call(state, 3); Betting.call(state, 0); Betting.call(state, 1); Betting.check(state, 2);
-        Betting.sweepToHandTotals(state);
-
-        const before = potOf(state);
-        assert.equal(before, 8);
-
-        state.seats[1].inHand = false; // dealer takes them out
-
-        assert.equal(potOf(state), before, "the pot must not shrink when a player is taken out");
-    });
-
-    test("they cannot be paid out of a pot they walked away from", () => {
-        const state = makeTable({ seatCount: 4, seated: [0, 1, 2], dealerSeatIndex: 0 });
-        Betting.beginHand(state);
-        Betting.call(state, 0); Betting.call(state, 1); Betting.check(state, 2);
-        Betting.sweepToHandTotals(state);
-
-        state.seats[1].inHand = false;
-
-        const players = state.seats
-            .filter(p => HoldemState.computeContribution(p, state.chipLegend, state.basePotAmount) > 0)
-            .map(p => ({
-                id: p.id,
-                contribution: HoldemState.computeContribution(p, state.chipLegend, state.basePotAmount),
-                folded: p.folded || HoldemState.isDeadMoney(p),
-            }));
-
-        const layers = PotCalculator.layers(players);
-        assert.ok(!layers[0].eligible.includes(state.seats[1].id), "a departed player can't win");
-        assert.equal(layers.reduce((s, l) => s + l.amount, 0), 6, "but their money is still being played for");
-    });
-
-    test("taking out the player who is to act moves the action on", () => {
-        const state = makeTable({ seatCount: 4, seated: [0, 1, 2, 3], dealerSeatIndex: 0 });
-        Betting.beginHand(state);
-        const acting = state.actingSeatIndex;
-
-        state.seats[acting].inHand = false;
-        Betting.passAction(state, acting);
-
-        assert.notEqual(state.actingSeatIndex, acting, "the table can't wait on somebody who left");
-        assert.ok(state.actingSeatIndex === null || state.seats[state.actingSeatIndex].inHand);
-    });
-
-    test("an empty chair still contributes nothing, base pot or not", () => {
-        // The table-wide default must not be read as an ante from seats nobody is in.
-        const state = makeTable({ seatCount: 6, seated: [0, 1], dealerSeatIndex: 0 });
-        state.basePotAmount = 25;
-        assert.equal(HoldemState.computeContribution(state.seats[4], state.chipLegend, 25), 0);
-    });
-});
-
-describe("a player joins in the middle of a hand", () => {
-    test("they sit the hand out rather than joining a pot they never paid into", () => {
-        const state = makeTable({ seatCount: 6, seated: [0, 1, 2], dealerSeatIndex: 0 });
-        Betting.beginHand(state);
-        Betting.call(state, 0); Betting.call(state, 1); Betting.check(state, 2);
-        Betting.sweepToHandTotals(state);
-
-        // Walks up and is dealt in — the app marks them folded for this hand.
-        state.seats[4].inHand = true;
-        state.seats[4].stack = 100;
-        state.seats[4].folded = true;
-
-        assert.ok(!Betting.liveSeats(state).some(s => s.index === 4), "not live this hand");
-        assert.equal(HoldemState.computeContribution(state.seats[4], state.chipLegend, state.basePotAmount), 0);
-    });
-
-    test("they are a full player again on the next hand", () => {
-        const state = makeTable({ seatCount: 6, seated: [0, 1, 2], dealerSeatIndex: 0 });
-        Betting.beginHand(state);
-        state.seats[4].inHand = true;
-        state.seats[4].stack = 100;
-        state.seats[4].folded = true;
-
-        HoldemState.startNextHand(state);
-        Betting.beginHand(state);
-
-        assert.equal(state.seats[4].folded, false);
-        assert.ok(Betting.liveSeats(state).some(s => s.index === 4), "dealt in like anyone else");
-    });
-});
-
-describe("passing the button around before the cards come out", () => {
-    test("moving the button re-posts the blinds and keeps the chip count straight", () => {
-        const state = makeTable({ seatCount: 6, seated: [0, 1, 2, 3], dealerSeatIndex: 0 });
-        const startingChips = chipsOnTable(state);
-        Betting.beginHand(state);
-
-        assert.equal(state.seats[1].committed, 1);
-        assert.equal(state.seats[2].committed, 2);
-
-        state.dealerSeatIndex = 2;
-        Betting.repostBlinds(state);
-
-        assert.equal(state.seats[1].committed, 0, "the old small blind got their chip back");
-        assert.equal(state.seats[3].committed, 1, "and the new one has posted");
-        assert.equal(state.seats[0].committed, 2);
-        assert.equal(chipsOnTable(state), startingChips, "no chips created or lost in the shuffle");
-    });
-
-    test("passing it round many times still balances", () => {
-        const state = makeTable({ seatCount: 8, seated: [0, 2, 3, 5, 7], dealerSeatIndex: 0 });
-        const startingChips = chipsOnTable(state);
-        Betting.beginHand(state);
-
-        [2, 5, 7, 3, 0, 5].forEach(seat => {
-            state.dealerSeatIndex = seat;
-            Betting.repostBlinds(state);
-            assert.equal(chipsOnTable(state), startingChips, `chips drifted after passing to seat ${seat}`);
-        });
-
-        const { sbIndex, bbIndex } = HoldemState.getBlindSeats(state);
-        assert.equal(Betting.committed(state.seats[sbIndex]), 1);
-        assert.equal(Betting.committed(state.seats[bbIndex]), 2);
-    });
-
-    test("once somebody has acted, the blinds are settled", () => {
-        const state = makeTable({ seatCount: 4, seated: [0, 1, 2, 3], dealerSeatIndex: 0 });
-        Betting.beginHand(state);
-        assert.equal(Betting.onlyBlindsIn(state), true, "nothing but blinds so far");
-
-        Betting.call(state, 3);
-        assert.equal(Betting.onlyBlindsIn(state), false, "a call means the blinds are set where they are");
-    });
-});
-
-describe("naming the blinds by hand", () => {
-    test("a named blind wins over the button order", () => {
-        const state = makeTable({ seatCount: 6, seated: [0, 1, 2, 3], dealerSeatIndex: 0 });
-        state.blindOverride = { sbIndex: 3, bbIndex: 0 };
-
-        const { sbIndex, bbIndex, manual } = HoldemState.getBlindSeats(state);
-        assert.equal(sbIndex, 3);
-        assert.equal(bbIndex, 0);
-        assert.equal(manual, true);
-
-        Betting.beginHand(state);
-        assert.equal(state.seats[3].committed, 1);
-        assert.equal(state.seats[0].committed, 2);
-        assert.equal(state.seats[1].committed, 0, "the positional small blind posts nothing");
-    });
-
-    test("a named blind on a player who isn't dealt in is ignored", () => {
-        const state = makeTable({ seatCount: 6, seated: [0, 1, 2], dealerSeatIndex: 0 });
-        state.blindOverride = { sbIndex: 4, bbIndex: 0 }; // seat 4 is an empty chair
-
-        const { sbIndex, manual } = HoldemState.getBlindSeats(state);
-        assert.ok(!manual, "falls back to the button order rather than posting to nobody");
-        assert.ok(state.seats[sbIndex].inHand);
-    });
-
-    test("both blinds on one player is refused", () => {
-        const state = makeTable({ seatCount: 6, seated: [0, 1, 2], dealerSeatIndex: 0 });
-        state.blindOverride = { sbIndex: 1, bbIndex: 1 };
-        const { sbIndex, bbIndex } = HoldemState.getBlindSeats(state);
-        assert.notEqual(sbIndex, bbIndex);
-    });
-
-    test("naming blinds heads-up still acts in the right order", () => {
-        const state = makeTable({ seatCount: 6, seated: [2, 5], dealerSeatIndex: 2 });
-        state.blindOverride = { sbIndex: 5, bbIndex: 2 }; // deliberately the reverse
-
-        Betting.beginHand(state);
-        assert.equal(state.seats[5].committed, 1);
-        assert.equal(state.seats[2].committed, 2);
-        assert.equal(state.actingSeatIndex, 5, "the small blind acts first pre-flop heads-up");
-
-        Betting.call(state, 5);
-        Betting.check(state, 2);
-        Betting.closeStreet(state);
-        assert.equal(state.actingSeatIndex, 2, "and the big blind leads after the flop");
-    });
-
-    test("the naming only lasts the hand it was made for", () => {
-        const state = makeTable({ seatCount: 6, seated: [0, 1, 2, 3], dealerSeatIndex: 0 });
-        state.blindOverride = { sbIndex: 3, bbIndex: 0 };
-        Betting.beginHand(state);
-
-        HoldemState.startNextHand(state);
-        assert.equal(state.blindOverride, null, "blinds go back to following the button");
-    });
-});
-
-describe("the first hand on a fresh table", () => {
-    test("the button never starts on an empty chair", () => {
-        const state = HoldemState.createDefault();
-        HoldemState.resizeSeats(state, 9);
-        [4, 6, 7].forEach(i => { state.seats[i].inHand = true; state.seats[i].stack = 100; });
-        assert.equal(state.dealerSeatIndex, 0, "a fresh table starts the button on seat 1");
-        assert.equal(state.seats[0].inHand, false, "which nobody is sitting in");
-
-        Betting.beginHand(state);
-
-        assert.ok(state.seats[state.dealerSeatIndex].inHand, "the button moved to a real player");
-        const { sbIndex, bbIndex } = HoldemState.getBlindSeats(state);
-        assert.ok(state.seats[sbIndex].inHand);
-        assert.ok(state.seats[bbIndex].inHand);
-        assert.notEqual(sbIndex, bbIndex);
-    });
-
-    test("a table that empties out around the button recovers", () => {
-        const state = makeTable({ seatCount: 6, seated: [0, 1, 2, 3], dealerSeatIndex: 3 });
-        state.seats[3].inHand = false; // the player holding the button leaves
-        HoldemState.ensureButtonOnPlayer(state);
-        assert.ok(state.seats[state.dealerSeatIndex].inHand);
-    });
-
-    test("two players left after everyone else walks is heads-up, blinds reversed", () => {
-        const state = makeTable({ seatCount: 6, seated: [0, 1, 2, 3], dealerSeatIndex: 0 });
-        [2, 3].forEach(i => { state.seats[i].inHand = false; });
-
-        HoldemState.startNextHand(state);
-        Betting.beginHand(state);
-
-        const { sbIndex, headsUp } = HoldemState.getBlindSeats(state);
-        assert.equal(headsUp, true);
-        assert.equal(sbIndex, state.dealerSeatIndex, "heads-up the button posts the small blind");
-    });
-});
-
-describe("chips survive a messy table", () => {
-    test("joining, leaving and passing the button never changes the chip count", () => {
-        const state = makeTable({ seatCount: 8, seated: [0, 1, 2, 3], stack: 100, dealerSeatIndex: 0 });
-        state.seats[6].stack = 100; // sitting down but not dealt in yet
-        const startingChips = chipsOnTable(state);
-
-        Betting.beginHand(state);
-        state.dealerSeatIndex = 2;
-        Betting.repostBlinds(state);
-
-        state.seats[6].inHand = true;   // walks up mid-hand
-        state.seats[6].folded = true;
-        assert.equal(chipsOnTable(state), startingChips);
-
-        Betting.call(state, state.actingSeatIndex);
-        state.seats[1].inHand = false;  // and someone storms off
-        Betting.sweepToHandTotals(state);
-
-        assert.equal(chipsOnTable(state), startingChips, "every chip is still accounted for");
-        assert.equal(
-            Money.toCents(potOf(state) + state.seats.reduce((s, p) => s + (Number(p.stack) || 0), 0)),
-            Money.toCents(startingChips),
-            "and the pot plus the stacks is the whole table"
-        );
-    });
-});

tests/holdem/misdeal.test.js

@@ -1,155 +0,0 @@
-// Taking a hand back.
-//
-// The rulings sheet in this tool has told dealers to redeal since the day it was
-// written — first card to the wrong seat, a seat entitled to a hand dealt out, one of
-// the first two cards exposed — and the tool had no way to do it. The only control that
-// ended a live hand was Next Hand, which says out loud that it takes the money off the
-// table without paying anybody. That is right for an abandoned pot and wrong for a
-// misdeal, where the blinds and the calls belong to the people who put them in.
-const test = require("node:test");
-const { describe } = require("node:test");
-const assert = require("node:assert");
-const { Money, Betting, HoldemState, makeTable, chipsOnTable } = require("./load");
-
-const dealt = (extra = {}) => {
-    const state = makeTable({ seatCount: 6, stack: 200, smallBlind: 5, bigBlind: 10, dealerSeatIndex: 0, ...extra });
-    Betting.beginHand(state);
-    return state;
-};
-
-describe("the money", () => {
-    test("goes back to the people who put it in", () => {
-        const state = dealt();
-        const before = state.seats.map(p => Betting.stackOf(state, p) + Betting.committed(p));
-        Betting.takeHandBack(state);
-        assert.deepEqual(state.seats.map(p => Betting.stackOf(state, p)), before);
-    });
-
-    test("including calls and raises, not just the blinds", () => {
-        const state = dealt();
-        Betting.raiseTo(state, state.actingSeatIndex, 40);
-        Betting.call(state, state.actingSeatIndex);
-        assert.ok(Betting.potSoFar(state) > 50, "there is real money in the middle");
-
-        const taken = Betting.takeHandBack(state);
-        assert.equal(taken.total, 95, "blinds and both wagers");
-        assert.deepEqual(state.seats.map(p => Betting.stackOf(state, p)), [200, 200, 200, 200, 200, 200]);
-    });
-
-    test("and across streets, once chips have been swept into hand totals", () => {
-        const state = dealt();
-        [3, 4, 5, 0, 1, 2].forEach(seat => {
-            if (state.actingSeatIndex !== null) Betting.call(state, state.actingSeatIndex);
-        });
-        Betting.closeStreet(state);
-        assert.ok(state.seats.some(p => (Number(p.amountOverride) || 0) > 0), "the flop's money is banked");
-
-        Betting.takeHandBack(state);
-        assert.deepEqual(state.seats.map(p => Betting.stackOf(state, p)), [200, 200, 200, 200, 200, 200]);
-        assert.deepEqual(state.seats.map(p => p.amountOverride), [null, null, null, null, null, null]);
-    });
-
-    test("the table has exactly the chips it started with", () => {
-        const fresh = makeTable({ seatCount: 6, stack: 200, smallBlind: 5, bigBlind: 10 });
-        const total = chipsOnTable(fresh);
-        const state = dealt();
-        Betting.raiseTo(state, state.actingSeatIndex, 40);
-        Betting.takeHandBack(state);
-        assert.equal(chipsOnTable(state), total);
-    });
-
-    test("nothing is thrown away — the discard pile doesn't move", () => {
-        const state = dealt();
-        state.discarded = 8;
-        Betting.takeHandBack(state);
-        assert.equal(state.discarded, 8, "a misdeal is not an abandoned pot");
-    });
-
-    test("it says what went back and to whom", () => {
-        const state = dealt();
-        const taken = Betting.takeHandBack(state);
-        assert.equal(taken.returned.length, 2, "the two blinds");
-        assert.deepEqual(taken.returned.map(r => r.amount).sort((a, b) => a - b), [5, 10]);
-        assert.ok(taken.returned.every(r => r.name), "named, because the dealer says it out loud");
-    });
-});
-
-describe("the table afterwards", () => {
-    test("is waiting to deal the same hand again", () => {
-        const state = dealt();
-        Betting.takeHandBack(state);
-        assert.equal(state.bettingOpen, false, "the dealer says when");
-        assert.equal(state.street, "preflop");
-        assert.equal(state.actingSeatIndex, null);
-        assert.equal(state.currentBet, 0);
-    });
-
-    test("keeps the button where it was — a misdeal is not the next hand", () => {
-        const state = dealt({ dealerSeatIndex: 3 });
-        const handNumber = state.handNumber;
-        Betting.takeHandBack(state);
-        assert.equal(state.dealerSeatIndex, 3);
-        assert.equal(state.handNumber, handNumber, "no hand has been played");
-        assert.equal((state.handHistory || []).length, 0, "and none is logged");
-    });
-
-    test("keeps the straddle, which was announced and still stands", () => {
-        const state = makeTable({ seatCount: 6, stack: 200, smallBlind: 5, bigBlind: 10 });
-        state.straddleCount = 1;
-        Betting.beginHand(state);
-        assert.deepEqual(state.postedStraddles, [3]);
-
-        Betting.takeHandBack(state);
-        assert.equal(state.straddleCount, 1, "still on for the redeal");
-        assert.deepEqual(state.postedStraddles, [], "but nothing is out there yet");
-
-        Betting.beginHand(state);
-        assert.deepEqual(state.postedStraddles, [3], "and it goes out again");
-    });
-
-    test("clears the cards and the folds, because none of it happened", () => {
-        const state = dealt();
-        state.seats[3].cards = ["As", "Kd"];
-        Betting.fold(state, 3);
-        Betting.takeHandBack(state);
-        assert.deepEqual(state.seats[3].cards, ["", ""]);
-        assert.equal(state.seats[3].folded, false);
-        assert.ok(state.seats.every(p => !p.hasActed));
-    });
-
-    test("deals again cleanly, with the same blinds on the same players", () => {
-        const state = dealt();
-        const first = state.seats.map(p => Betting.committed(p));
-        Betting.takeHandBack(state);
-        Betting.beginHand(state);
-        assert.deepEqual(state.seats.map(p => Betting.committed(p)), first);
-    });
-});
-
-describe("the bank still balances", () => {
-    test("through a misdeal and the redeal after it", () => {
-        const state = dealt();
-        state.seats.forEach(p => { p.buyIns = 200; });
-        assert.equal(HoldemState.bankReconciliation(state).balanced, true);
-
-        Betting.raiseTo(state, state.actingSeatIndex, 60);
-        Betting.takeHandBack(state);
-        assert.equal(HoldemState.bankReconciliation(state).balanced, true);
-
-        Betting.beginHand(state);
-        const bank = HoldemState.bankReconciliation(state);
-        assert.equal(bank.balanced, true);
-        assert.equal(bank.cashIn, 1200);
-    });
-});
-
-describe("taking back a hand nobody had money in", () => {
-    test("is harmless: no blinds, nothing moves", () => {
-        const state = makeTable({ seatCount: 6, stack: 200, smallBlind: 0, bigBlind: 0 });
-        Betting.beginHand(state);
-        const taken = Betting.takeHandBack(state);
-        assert.equal(taken.total, 0);
-        assert.deepEqual(taken.returned, []);
-        assert.equal(state.bettingOpen, false);
-    });
-});

tests/holdem/money.test.js

@@ -1,141 +0,0 @@
-const { test, describe } = require("node:test");
-const assert = require("node:assert/strict");
-const { Money, HandHistoryExport } = require("./load");
-
-describe("Money.format", () => {
-    test("whole amounts drop the pointless cents", () => {
-        assert.equal(Money.format(12), "$12");
-        assert.equal(Money.format(450), "$450");
-        assert.equal(Money.format(1250000), "$1,250,000");
-        assert.equal(Money.format(0), "$0");
-    });
-
-    test("amounts that carry cents still show them", () => {
-        assert.equal(Money.format(12.5), "$12.50");
-        assert.equal(Money.format(0.25), "$0.25");
-        assert.equal(Money.format(3.01), "$3.01");
-    });
-
-    test("a quarter-blind game reads exactly as it did", () => {
-        // The case that would be ruined by dropping cents unconditionally.
-        [0.25, 0.5, 1.75, 12.05].forEach(v => {
-            assert.match(Money.format(v), /\.\d\d$/, `${v} lost its cents`);
-        });
-    });
-
-    test("floating-point dust doesn't invent cents", () => {
-        assert.equal(Money.format(0.1 + 0.2), "$0.30");
-        assert.equal(Money.format(1.0000000001), "$1");
-    });
-
-    test("signed amounts put the sign out front, both scales", () => {
-        assert.equal(Money.formatSigned(87500), "+$87,500");
-        assert.equal(Money.formatSigned(-87500), "-$87,500");
-        assert.equal(Money.formatSigned(-12.5), "-$12.50");
-        assert.equal(Money.formatSigned(0), "$0");
-    });
-
-    test("rubbish in doesn't produce rubbish out", () => {
-        assert.equal(Money.format(null), "$0");
-        assert.equal(Money.format(undefined), "$0");
-        assert.equal(Money.format("nonsense"), "$0");
-    });
-});
-
-describe("Money.forSheet", () => {
-    test("a bare number a spreadsheet will add up", () => {
-        assert.equal(Money.forSheet(1250000), "1250000.00");
-        assert.equal(Money.forSheet(12.5), "12.50");
-        assert.equal(Money.forSheet(-87500), "-87500.00");
-    });
-
-    test("no currency symbol and no thousands separators", () => {
-        const written = Money.forSheet(1234567.89);
-        assert.ok(!written.includes("$"), "a $ makes the cell text");
-        assert.ok(!written.includes(","), "a comma makes the cell text");
-        assert.equal(Number(written), 1234567.89, "and it parses straight back to a number");
-    });
-});
-
-describe("the exported CSV", () => {
-    const history = [
-        { handNumber: 2, timestamp: 0, pot: 1250000, payouts: [{ id: "a", label: "Alexandra", amount: 1250000 }] },
-        { handNumber: 1, timestamp: 0, pot: 24.5, payouts: [{ id: "b", label: "Bob", amount: 24.5 }] },
-    ];
-    const standings = [
-        { id: "a", name: "Alexandra", in: 1250000, won: 1250000, net: 0, boughtIn: 3200000, chipsNow: 3200000, cashPosition: 0 },
-        { id: "b", name: "Bob", in: 24.5, won: 0, net: -24.5, boughtIn: 100, chipsNow: 75.5, cashPosition: -24.5 },
-    ];
-
-    // Splitting on commas isn't good enough: the timestamp column legitimately holds
-    // one ("1/1/1970, 5:00:00 PM") and is quoted for exactly that reason.
-    const splitRow = line => {
-        const fields = [];
-        let field = "";
-        let quoted = false;
-        for (let i = 0; i < line.length; i++) {
-            const c = line[i];
-            if (quoted) {
-                if (c === '"' && line[i + 1] === '"') { field += '"'; i++; }
-                else if (c === '"') quoted = false;
-                else field += c;
-            } else if (c === '"') quoted = true;
-            else if (c === ",") { fields.push(field); field = ""; }
-            else field += c;
-        }
-        fields.push(field);
-        return fields;
-    };
-
-    test("every money cell parses as a number", () => {
-        const csv = HandHistoryExport.toCsv(history, standings);
-        const lines = csv.split("\r\n");
-
-        lines.slice(1, 3).forEach(line => {
-            const cell = splitRow(line)[2]; // Pot
-            assert.ok(cell !== "" && !Number.isNaN(Number(cell)), `pot cell "${cell}" isn't a number`);
-        });
-
-        // Standings rows: the money columns have to be numeric. Named rather than
-        // "everything after the first", which is what this used to say — the row now
-        // ends with a Notes column carrying whatever the dealer typed against the seat,
-        // and that is text by definition. The point of this test is that a column
-        // somebody totals adds up, so it checks the columns somebody totals.
-        const standingsStart = lines.findIndex(l => l.startsWith("Player,"));
-        const header = splitRow(lines[standingsStart]);
-        const moneyColumns = ["Paid In", "Won", "Net", "Bought In", "Chips Now", "Up/Down"]
-            .map(name => {
-                const index = header.indexOf(name);
-                assert.ok(index > 0, `the standings header should still have a ${name} column`);
-                return index;
-            });
-
-        lines.slice(standingsStart + 1).filter(Boolean).forEach(line => {
-            const cells = splitRow(line);
-            moneyColumns.forEach(index => {
-                const cell = cells[index];
-                assert.ok(cell !== "" && !Number.isNaN(Number(cell)),
-                    `standings cell "${cell}" in column ${header[index]} isn't a number`);
-            });
-        });
-    });
-
-    test("a million-dollar pot doesn't need quoting any more", () => {
-        const csv = HandHistoryExport.toCsv(history, []);
-        assert.ok(csv.includes("1250000.00"), "written plainly");
-        assert.ok(!csv.includes('"$1,250,000'), "not as a quoted, unsummable string");
-    });
-
-    test("names and payout descriptions stay human", () => {
-        const csv = HandHistoryExport.toCsv(history, standings);
-        assert.ok(csv.includes("Alexandra"), "the name column is still a name");
-        assert.ok(csv.includes("Alexandra: $1,250,000"), "the payout column still reads like a sentence");
-    });
-
-    test("a name with a comma is still quoted properly", () => {
-        const csv = HandHistoryExport.toCsv([], [
-            { id: "x", name: "Smith, John", in: 0, won: 0, net: 0, boughtIn: 0, chipsNow: 0, cashPosition: 0 },
-        ]);
-        assert.ok(csv.includes('"Smith, John"'), "the CSV escaping still applies where it's needed");
-    });
-});

tests/holdem/oneStackRule.test.js

@@ -1,133 +0,0 @@
-// One question, one answer.
-//
-// The round before this found the bank check and the standings reading `seat.stack`
-// where the felt reads the table's starting stack — two parts of the tool disagreeing
-// about how much money is on the table. This is the sweep that followed: everywhere
-// else the same two questions get asked, asked the same way.
-//
-//   "What is this seat holding?"      -> HoldemState.chipsHeldBy
-//   "Is anybody in this chair?"       -> HoldemState.seatInPlay
-const test = require("node:test");
-const { describe } = require("node:test");
-const assert = require("node:assert");
-const { HoldemState, Betting, SettleUp } = require("./load");
-
-const openedOnTheDefault = (stack = 200) => {
-    const state = HoldemState.createDefault();
-    HoldemState.resizeSeats(state, 6);
-    state.defaultStack = stack;
-    ["Ann", "Ben", "Cal"].forEach((name, i) => {
-        state.seats[i].name = name;
-        state.seats[i].inHand = true;
-        state.seats[i].buyIns = stack;
-    });
-    return state;
-};
-
-describe("what a seat is holding", () => {
-    test("is the same number the felt plays with", () => {
-        const state = openedOnTheDefault();
-        state.seats.forEach((player, i) => {
-            if (i > 2) return;
-            assert.equal(HoldemState.chipsHeldBy(state, player), Betting.stackOf(state, player));
-        });
-    });
-
-    test("and is nothing at all for an empty chair", () => {
-        const state = openedOnTheDefault();
-        // Betting's own answer for an empty chair is the table default, because it is
-        // only ever asked about seats that are in a hand. The money side has to ask
-        // about all ten chairs, so it checks whether anybody is in them first.
-        assert.equal(Betting.stackOf(state, state.seats[5]), 200);
-        assert.equal(HoldemState.chipsHeldBy(state, state.seats[5]), 0);
-    });
-
-    test("counts a stack the dealer typed over the table's default", () => {
-        const state = openedOnTheDefault();
-        state.seats[0].stack = 75;
-        assert.equal(HoldemState.chipsHeldBy(state, state.seats[0]), 75);
-    });
-});
-
-describe("is anybody in this chair", () => {
-    const empty = () => HoldemState.createDefault().seats[0];
-
-    test("an untouched chair is empty", () => {
-        assert.equal(HoldemState.seatInPlay(empty()), false);
-        assert.equal(HoldemState.seatInPlay(null), false);
-    });
-
-    test("a name, chips, cash, a bet or a dealt hand all count", () => {
-        [
-            ["a name", p => { p.name = "Ann"; }],
-            ["chips", p => { p.stack = 50; }],
-            ["cash taken", p => { p.buyIns = 100; }],
-            ["a bet in front of them", p => { p.committed = 5; }],
-            ["money already swept in", p => { p.amountOverride = 20; }],
-            ["a hand dealt to them", p => { p.inHand = true; }],
-        ].forEach(([what, mark]) => {
-            const seat = empty();
-            mark(seat);
-            assert.equal(HoldemState.seatInPlay(seat), true, what);
-        });
-    });
-
-    test("whitespace is not a name", () => {
-        const seat = empty();
-        seat.name = "   ";
-        assert.equal(HoldemState.seatInPlay(seat), false);
-    });
-});
-
-describe("the parts that used to disagree", () => {
-    test("the open seats and the seat count see the same empty chairs", () => {
-        const state = openedOnTheDefault();
-        // Three players, six chairs.
-        assert.deepEqual(HoldemState.openSeats(state), [3, 4, 5]);
-        const occupied = state.seats.filter(p => HoldemState.seatInPlay(p)).length;
-        assert.equal(occupied + HoldemState.openSeats(state).length, state.seats.length);
-    });
-
-    test("a chair holding only a dealt hand is not offered to the waiting list", () => {
-        // The old test looked at name, buy-ins and stack. A seat marked in-hand with
-        // none of those would have been handed to the next person in the queue, on top
-        // of whoever was already playing it.
-        const state = openedOnTheDefault();
-        state.seats[4].inHand = true;
-        assert.deepEqual(HoldemState.openSeats(state), [3, 5]);
-
-        HoldemState.addToWaitingList(state, "Priya");
-        const result = HoldemState.seatFromWaitingList(state, state.waitingList[0].id, 4);
-        assert.equal(result.ok, false);
-    });
-
-    test("the bank, the standings and the settle-up all price the night the same way", () => {
-        const state = openedOnTheDefault();
-        state.seats[0].stack = 320;   // Ann is up
-        state.seats[1].stack = 80;    // Ben is down
-
-        const bank = HoldemState.bankReconciliation(state);
-        const standings = HoldemState.sessionStandings(state);
-        const chipsFromStandings = standings
-            .filter(row => !row.cashedOut)
-            .reduce((sum, row) => sum + row.chipsInFront, 0);
-
-        assert.equal(bank.chipsInPlay, chipsFromStandings, "same chips on the table");
-        assert.equal(bank.balanced, true);
-
-        // And the payments the dealer is told to make add up to the same money.
-        const plan = SettleUp.plan(standings);
-        const owed = standings.reduce((sum, row) => sum + Math.max(0, row.cashPosition), 0);
-        const paid = plan.payments.reduce((sum, row) => sum + row.amount, 0);
-        assert.equal(paid + (plan.shortBy || 0) - (plan.overBy || 0), owed);
-    });
-
-    test("a player still holding the table's starting stack is in all three", () => {
-        const state = openedOnTheDefault();
-        const standings = HoldemState.sessionStandings(state);
-        assert.equal(standings.length, 3);
-        assert.deepEqual(standings.map(row => row.chipsInFront), [200, 200, 200]);
-        assert.equal(HoldemState.bankReconciliation(state).chipsInPlay, 600);
-        assert.deepEqual(SettleUp.plan(standings).payments, [], "everyone is even, so nobody pays anybody");
-    });
-});

tests/holdem/otherTab.test.js

@@ -1,100 +0,0 @@
-// Noticing that the same table is open twice.
-//
-// Two tabs each hold their own copy in memory and each save writes the whole thing,
-// so the second one to act throws the first one's work away. This doesn't merge them
-// — replacing a table under a dealer's hands mid-hand would be its own hazard — it
-// notices, which is what lets them decide.
-const test = require("node:test");
-const assert = require("node:assert");
-const { HoldemState } = require("./load");
-
-function withWindow() {
-    const listeners = [];
-    globalThis.window = {
-        addEventListener(type, fn) { if (type === "storage") listeners.push(fn); },
-        removeEventListener(type, fn) {
-            const i = listeners.indexOf(fn);
-            if (i >= 0) listeners.splice(i, 1);
-        },
-    };
-    return {
-        listeners,
-        fire(key) { listeners.forEach(fn => fn({ key })); },
-    };
-}
-
-test.beforeEach(() => {
-    HoldemState.otherTabActive = false;
-    HoldemState.onOtherTab = null;
-    HoldemState.tabWatcher = null;
-});
-
-test.after(() => {
-    delete globalThis.window;
-    HoldemState.otherTabActive = false;
-    HoldemState.onOtherTab = null;
-    HoldemState.tabWatcher = null;
-});
-
-test("a write to this table from elsewhere is noticed", () => {
-    const win = withWindow();
-    let told = 0;
-    HoldemState.onOtherTab = () => { told++; };
-    HoldemState.watchOtherTabs();
-
-    win.fire(HoldemState.STORAGE_KEY);
-
-    assert.equal(HoldemState.otherTabActive, true);
-    assert.equal(told, 1);
-});
-
-test("somebody else's storage key is not our business", () => {
-    const win = withWindow();
-    let told = 0;
-    HoldemState.onOtherTab = () => { told++; };
-    HoldemState.watchOtherTabs();
-
-    win.fire("some.other.app.state");
-    win.fire(HoldemState.RECOVERY_KEY);
-
-    assert.equal(HoldemState.otherTabActive, false);
-    assert.equal(told, 0);
-});
-
-test("told once, however many times the other tab acts", () => {
-    const win = withWindow();
-    let told = 0;
-    HoldemState.onOtherTab = () => { told++; };
-    HoldemState.watchOtherTabs();
-
-    for (let i = 0; i < 10; i++) win.fire(HoldemState.STORAGE_KEY);
-
-    assert.equal(told, 1);
-});
-
-test("watching twice doesn't listen twice", () => {
-    const win = withWindow();
-    HoldemState.watchOtherTabs();
-    HoldemState.watchOtherTabs();
-    HoldemState.watchOtherTabs();
-
-    assert.equal(win.listeners.length, 1);
-});
-
-test("no listener set is not an error", () => {
-    const win = withWindow();
-    HoldemState.onOtherTab = null;
-    HoldemState.watchOtherTabs();
-
-    assert.doesNotThrow(() => win.fire(HoldemState.STORAGE_KEY));
-    assert.equal(HoldemState.otherTabActive, true);
-});
-
-test("no window at all is not an error", () => {
-    // The same modules are loaded in Node by the test harness.
-    delete globalThis.window;
-    HoldemState.tabWatcher = null;
-
-    assert.doesNotThrow(() => HoldemState.watchOtherTabs());
-    assert.equal(HoldemState.otherTabActive, false);
-});

tests/holdem/postingIn.test.js

@@ -1,238 +0,0 @@
-// Somebody who walks up and sits down after the blinds have gone past them.
-//
-// Dealing them straight in is a free hand in late position — which is what posting
-// exists to stop, and it comes out of everybody else's night a couple of dollars at a
-// time. The tool used to do it silently. It now says so, and takes the post if the
-// dealer says to.
-const test = require("node:test");
-const { describe } = require("node:test");
-const assert = require("node:assert");
-const { HoldemState, Betting, makeTable } = require("./load");
-
-const NAMES = ["Ann", "Ben", "Cal", "Dee"];
-const table = (dealerSeatIndex = 0) => {
-    const state = makeTable({ seatCount: 6, seated: [0, 1, 2, 3], stack: 200, dealerSeatIndex });
-    NAMES.forEach((name, i) => { state.seats[i].name = name; });
-    return state;
-};
-
-// Eve walks up and takes seat 5 while the table is running.
-const seatEve = state => {
-    state.seats[4].name = "Eve";
-    state.seats[4].inHand = true;
-    state.seats[4].stack = 200;
-    state.seats[4].buyIns = 200;
-    return 4;
-};
-
-const debtors = state => {
-    const { bbIndex } = HoldemState.getBlindSeats(state);
-    return HoldemState.blindDebtors(state, bbIndex).map(i => state.seats[i].name);
-};
-
-describe("who is owed a blind", () => {
-    test("nobody, at a table that hasn't dealt a hand yet", () => {
-        // Everyone is new on the first hand. Asking the whole table to post would be
-        // the tool mistaking the start of the night for five people walking up late.
-        const state = table();
-        assert.deepEqual(debtors(state), []);
-    });
-
-    test("nobody, on an ordinary hand where the same people are still sitting there", () => {
-        const state = table();
-        Betting.beginHand(state);
-        HoldemState.startNextHand(state);
-        assert.deepEqual(debtors(state), []);
-    });
-
-    test("the player who has just sat down", () => {
-        const state = table();
-        Betting.beginHand(state);
-        HoldemState.startNextHand(state);
-        seatEve(state);
-
-        assert.deepEqual(debtors(state), ["Eve"]);
-    });
-
-    test("not once they've been dealt a hand", () => {
-        const state = table();
-        Betting.beginHand(state);
-        HoldemState.startNextHand(state);
-        seatEve(state);
-        Betting.beginHand(state);
-        HoldemState.startNextHand(state);
-
-        assert.deepEqual(debtors(state), [], "she's one of the regulars now");
-    });
-
-    test("not somebody who is the big blind this hand — they're paying already", () => {
-        const state = table(0);              // blinds Ben and Cal
-        Betting.beginHand(state);
-        HoldemState.startNextHand(state);    // blinds move to Cal and Dee
-
-        // Dee sits out for a hand and comes straight back into her own big blind.
-        state.seats[3].inHand = false;
-        Betting.beginHand(state);
-        HoldemState.startNextHand(state);
-        state.seats[3].inHand = true;
-
-        const { bbIndex } = HoldemState.getBlindSeats(state);
-        assert.ok(!HoldemState.blindDebtors(state, bbIndex).includes(bbIndex),
-            "the big blind is never asked to post on top of their blind");
-    });
-
-    test("somebody back from sitting out is owed one just like a newcomer", () => {
-        const state = table();
-        Betting.beginHand(state);
-        HoldemState.startNextHand(state);
-
-        state.seats[3].inHand = false;       // Dee stands up for a hand
-        Betting.beginHand(state);
-        HoldemState.startNextHand(state);
-        state.seats[3].inHand = true;        // and sits back down
-
-        assert.ok(debtors(state).includes("Dee"), "the blinds went past her while she was up");
-    });
-
-    test("a seat sat out for having no chips isn't owed anything", () => {
-        // They aren't being dealt in, so there's no free hand to charge for.
-        const state = table();
-        Betting.beginHand(state);
-        HoldemState.startNextHand(state);
-        const eve = seatEve(state);
-        state.seats[eve].stack = 0;
-
-        const preview = Betting.blindPreview(state);
-        assert.ok(!preview.debtors.includes(eve), "she's sitting out until she buys chips");
-    });
-});
-
-describe("posting to come in", () => {
-    test("the post goes in the middle and buys a hand", () => {
-        const state = table();
-        Betting.beginHand(state);
-        HoldemState.startNextHand(state);
-        const eve = seatEve(state);
-
-        state.postingIn = [state.seats[eve].id];
-        const before = Betting.stackOf(state, state.seats[eve]);
-        Betting.beginHand(state);
-
-        assert.equal(Betting.committed(state.seats[eve]), state.bigBlind, "she's posted a big blind");
-        assert.equal(Betting.stackOf(state, state.seats[eve]), before - state.bigBlind,
-            "out of her own stack, not conjured");
-        assert.equal(state.currentBet, state.bigBlind, "and it doesn't raise the hand");
-    });
-
-    test("not posting leaves her stack alone", () => {
-        const state = table();
-        Betting.beginHand(state);
-        HoldemState.startNextHand(state);
-        const eve = seatEve(state);
-
-        const before = Betting.stackOf(state, state.seats[eve]);
-        Betting.beginHand(state);
-
-        assert.equal(Betting.committed(state.seats[eve]), 0);
-        assert.equal(Betting.stackOf(state, state.seats[eve]), before);
-    });
-
-    test("the pot is what the blinds and the post add up to", () => {
-        const state = table();
-        Betting.beginHand(state);
-        HoldemState.startNextHand(state);
-        const eve = seatEve(state);
-
-        state.postingIn = [state.seats[eve].id];
-        Betting.beginHand(state);
-
-        const middle = state.seats.reduce((sum, p) => sum + Betting.committed(p), 0);
-        assert.equal(middle, state.smallBlind + state.bigBlind + state.bigBlind);
-    });
-
-    test("it's spent after the hand, not a standing charge", () => {
-        const state = table();
-        Betting.beginHand(state);
-        HoldemState.startNextHand(state);
-        const eve = seatEve(state);
-
-        state.postingIn = [state.seats[eve].id];
-        Betting.beginHand(state);
-        HoldemState.startNextHand(state);
-
-        assert.deepEqual(state.postingIn, [], "or she'd pay an extra blind every hand all night");
-        Betting.beginHand(state);
-        assert.ok(Betting.committed(state.seats[eve]) === 0 ||
-            state.seats[eve].id === state.seats[HoldemState.getBlindSeats(state).bbIndex]?.id,
-            "she pays nothing extra on the next hand");
-    });
-
-    test("moving the button after a post doesn't lose it", () => {
-        // repostBlinds takes every posted chip back and deals again. A post that
-        // cleared itself on the way in would be refunded and never retaken.
-        const state = table();
-        Betting.beginHand(state);
-        HoldemState.startNextHand(state);
-        const eve = seatEve(state);
-
-        state.postingIn = [state.seats[eve].id];
-        Betting.beginHand(state);
-        const chips = () => state.seats.reduce(
-            (sum, p) => sum + Betting.stackOf(state, p) + Betting.handTotal(p), 0);
-        const before = chips();
-
-        state.dealerSeatIndex = 2;
-        Betting.repostBlinds(state);
-
-        assert.equal(Betting.committed(state.seats[eve]), state.bigBlind, "still posted");
-        assert.equal(chips(), before, "and no chips made or lost in the shuffle");
-    });
-
-    test("a post from somebody who isn't owed one is not taken", () => {
-        // Only seats actually being dealt in can post, and only for their own chips.
-        const state = table();
-        state.postingIn = [state.seats[3].id];
-        state.seats[3].inHand = false;
-        Betting.beginHand(state);
-
-        assert.equal(Betting.committed(state.seats[3]), 0, "she isn't even in the hand");
-    });
-});
-
-describe("what the dealer is shown", () => {
-    test("the prompt has something to say about it, and something to press", () => {
-        const state = table();
-        Betting.beginHand(state);
-        HoldemState.startNextHand(state);
-        const eve = seatEve(state);
-
-        const preview = Betting.blindPreview(state);
-        assert.deepEqual(preview.debtors, [eve]);
-        assert.deepEqual(preview.posting, [], "not posting until the dealer says so");
-
-        state.postingIn = [state.seats[eve].id];
-        assert.deepEqual(Betting.blindPreview(state).posting, [state.seats[eve].id]);
-    });
-
-    test("an old save reads as a table nobody has just walked up to", () => {
-        const state = table();
-        Betting.beginHand(state);
-        const parsed = JSON.parse(JSON.stringify(state));
-        delete parsed.dealtLastHand;
-        delete parsed.postingIn;
-
-        const store = new Map([[HoldemState.STORAGE_KEY, JSON.stringify(parsed)]]);
-        globalThis.localStorage = {
-            getItem: key => (store.has(key) ? store.get(key) : null),
-            setItem: (key, value) => store.set(key, value),
-            removeItem: key => store.delete(key),
-        };
-
-        const loaded = HoldemState.load();
-        assert.deepEqual(loaded.dealtLastHand, []);
-        assert.deepEqual(loaded.postingIn, []);
-        assert.deepEqual(debtors(loaded), [],
-            "reopening the tab doesn't ask the whole table to post");
-        delete globalThis.localStorage;
-    });
-});

tests/holdem/potCalculator.test.js

@@ -1,124 +0,0 @@
-const { test, describe } = require("node:test");
-const assert = require("node:assert/strict");
-const { PotCalculator } = require("./load");
-
-const p = (id, contribution, folded = false) => ({ id, contribution, folded });
-
-describe("PotCalculator.layers", () => {
-    test("one pot when everyone put in the same", () => {
-        const layers = PotCalculator.layers([p("a", 50), p("b", 50), p("c", 50)]);
-        assert.equal(layers.length, 1);
-        assert.equal(layers[0].amount, 150);
-        assert.equal(layers[0].label, "Main pot");
-        assert.deepEqual(layers[0].eligible.sort(), ["a", "b", "c"]);
-    });
-
-    test("a short all-in opens a side pot only the deeper players can win", () => {
-        // a is all-in for 20, b and c keep betting to 60.
-        const layers = PotCalculator.layers([p("a", 20), p("b", 60), p("c", 60)]);
-        assert.equal(layers.length, 2);
-
-        assert.equal(layers[0].amount, 60); // 20 x 3
-        assert.deepEqual(layers[0].eligible.sort(), ["a", "b", "c"]);
-
-        assert.equal(layers[1].amount, 80); // 40 x 2
-        assert.deepEqual(layers[1].eligible.sort(), ["b", "c"]);
-        assert.equal(layers[1].label, "Side pot 1");
-    });
-
-    test("folded money stays in the pot as dead money but wins nothing", () => {
-        const layers = PotCalculator.layers([p("a", 50), p("b", 50), p("folder", 50, true)]);
-        assert.equal(layers.length, 1);
-        assert.equal(layers[0].amount, 150, "the folder's chips are still in the middle");
-        assert.ok(!layers[0].eligible.includes("folder"));
-    });
-
-    test("layers with the same eligible players are announced as one pot", () => {
-        // Two folders at different heights would each open a band, but a dealer
-        // announces one pot between the two players who can actually win it.
-        const layers = PotCalculator.layers([
-            p("a", 100),
-            p("b", 100),
-            p("f1", 20, true),
-            p("f2", 40, true),
-        ]);
-        const eligibleSets = layers.map(l => l.eligible.slice().sort().join(","));
-        assert.deepEqual(eligibleSets, ["a,b"], "one announceable pot, not three");
-        assert.equal(layers[0].amount, 260);
-    });
-
-    test("layer amounts always sum to the contested money", () => {
-        const players = [p("a", 12.5), p("b", 33.25), p("c", 33.25), p("d", 5, true)];
-        const total = players.reduce((s, x) => s + x.contribution, 0);
-        const uncalled = PotCalculator.uncalledReturns(players).reduce((s, r) => s + r.amount, 0);
-        const layered = PotCalculator.layers(players).reduce((s, l) => s + l.amount, 0);
-        assert.equal(Math.round((layered + uncalled) * 100), Math.round(total * 100));
-    });
-
-    test("nobody contributed means no pots, not an empty main pot", () => {
-        assert.deepEqual(PotCalculator.layers([p("a", 0), p("b", 0)]), []);
-    });
-});
-
-describe("PotCalculator.uncalledReturns", () => {
-    test("an overbet nobody called goes back to whoever bet it", () => {
-        // b shoves 200, a calls only 50 and everyone else folds.
-        const returns = PotCalculator.uncalledReturns([p("a", 50), p("b", 200)]);
-        assert.deepEqual(returns, [{ id: "b", amount: 150 }]);
-    });
-
-    test("a called bet leaves nothing to return", () => {
-        assert.deepEqual(PotCalculator.uncalledReturns([p("a", 50), p("b", 50)]), []);
-    });
-
-    test("the cap is the biggest live contribution, so a folder's overbet comes back", () => {
-        const returns = PotCalculator.uncalledReturns([p("live", 30), p("bully", 90, true)]);
-        assert.deepEqual(returns, [{ id: "bully", amount: 60 }]);
-    });
-
-    test("with nobody live it stays quiet rather than refunding the table", () => {
-        // Every fold flag set is a dealer mistake to correct, not a signal that
-        // every chip on the felt was uncalled.
-        assert.deepEqual(PotCalculator.uncalledReturns([p("a", 10, true), p("b", 20, true)]), []);
-    });
-});
-
-describe("PotCalculator.resolveRound", () => {
-    test("a single winner takes the layer they were matched for", () => {
-        const entries = PotCalculator.buildEntries([p("a", 50), p("b", 50)]);
-        const result = PotCalculator.resolveRound(entries, ["a"]);
-        assert.equal(result.payoutPool, 100);
-        assert.deepEqual(result.perWinner, [{ id: "a", amount: 100 }]);
-        assert.equal(result.remainingContenders.length, 0);
-    });
-
-    test("an all-in winner only takes what everyone matched, the rest rolls forward", () => {
-        const entries = PotCalculator.buildEntries([p("short", 20), p("b", 60), p("c", 60)]);
-        const result = PotCalculator.resolveRound(entries, ["short"]);
-        assert.equal(result.capApplied, 20);
-        assert.equal(result.payoutPool, 60, "20 from each of three players");
-        // b and c still have 40 each left to play for.
-        assert.deepEqual(result.remainingContenders.map(e => e.id).sort(), ["b", "c"]);
-        assert.equal(PotCalculator.totalPot(result.updatedEntries), 80);
-    });
-
-    test("a chopped pot splits evenly", () => {
-        const entries = PotCalculator.buildEntries([p("a", 30), p("b", 30)]);
-        const result = PotCalculator.resolveRound(entries, ["a", "b"]);
-        assert.deepEqual(result.perWinner, [{ id: "a", amount: 30 }, { id: "b", amount: 30 }]);
-    });
-
-    test("odd cents go to the winners in selection order and nothing is lost", () => {
-        // A $10.01 pot three ways doesn't divide: 3.34 / 3.34 / 3.33.
-        const entries = PotCalculator.buildEntries([p("a", 3.34), p("b", 3.34), p("c", 3.33)]);
-        const result = PotCalculator.resolveRound(entries, ["a", "b", "c"]);
-        const paid = result.perWinner.reduce((s, w) => s + w.amount, 0);
-        assert.equal(Math.round(paid * 100), Math.round(result.payoutPool * 100), "no chips lost to rounding");
-        assert.ok(result.perWinner[0].amount >= result.perWinner[2].amount, "odd cent goes to the first selected");
-    });
-
-    test("selecting nobody who can win is an error, not a silent no-op", () => {
-        const entries = PotCalculator.buildEntries([p("a", 50), p("b", 50)]);
-        assert.throws(() => PotCalculator.resolveRound(entries, ["ghost"]), /No valid winners/);
-    });
-});

tests/holdem/potRaise.test.js

@@ -1,180 +0,0 @@
-// What a pot-sized raise actually is.
-//
-// The raise pad worked it out as "the current bet plus the pot as it stands", which
-// leaves out the fact that the raiser calls first and their call is in the pot before
-// the raise is measured off it. Every quick amount came out short — pre-flop at 1/2 it
-// offered "Pot $5" where a pot raise is $7. Players say "pot" out loud meaning a
-// definite number, and a dealer tapping the button that claims to be it should record
-// what was actually said.
-const test = require("node:test");
-const { describe } = require("node:test");
-const assert = require("node:assert");
-const { Betting, Money, makeTable } = require("./load");
-
-describe("pre-flop at 1/2", () => {
-    const dealt = () => {
-        const state = makeTable({ seatCount: 6, seated: [0, 1, 2, 3], stack: 200, dealerSeatIndex: 0 });
-        Betting.beginHand(state);
-        return state;
-    };
-
-    test("a pot raise from the first player to act is $7", () => {
-        // Call the $2, which makes the pot $5, then raise $5.
-        const state = dealt();
-        assert.equal(Betting.potSoFar(state), 3, "the blinds");
-        assert.equal(Betting.potRaiseTo(state, state.actingSeatIndex), 7);
-    });
-
-    test("half pot is $5 — $4.50 rounded up to something the chips can make", () => {
-        // The old arithmetic gave $3.50, which clamped up to the minimum and put the
-        // same $4 on two buttons side by side. The honest half-pot is $4.50, and the
-        // smallest chip in the default legend is a dollar, so the button would have
-        // offered an amount the dealer had to round themselves every single time.
-        const state = dealt();
-        assert.equal(Betting.potRaiseTo(state, state.actingSeatIndex, 0.5), 5);
-        assert.notEqual(Betting.potRaiseTo(state, state.actingSeatIndex, 0.5),
-            Betting.minRaiseTo(state), "the two quick buttons say different things");
-    });
-
-    test("the small blind owes less, so their pot raise is smaller", () => {
-        // They have $1 in already: call $1, pot becomes $4, raise $4, total $6.
-        const state = dealt();
-        const { sbIndex } = require("./load").HoldemState.getBlindSeats(state);
-        assert.equal(Betting.toCall(state, state.seats[sbIndex]), 1);
-        assert.equal(Betting.potRaiseTo(state, sbIndex), 6);
-    });
-
-    test("the big blind owes nothing, so it is just the pot", () => {
-        const state = dealt();
-        const { bbIndex } = require("./load").HoldemState.getBlindSeats(state);
-        assert.equal(Betting.toCall(state, state.seats[bbIndex]), 0);
-        assert.equal(Betting.potRaiseTo(state, bbIndex), 5, "the $2 bet plus the $3 pot");
-    });
-});
-
-describe("after the flop", () => {
-    const flopWithBet = () => {
-        const state = makeTable({ seatCount: 6, seated: [0, 1, 2], stack: 500, dealerSeatIndex: 0 });
-        Betting.beginHand(state);
-        while (state.actingSeatIndex !== null) Betting.call(state, state.actingSeatIndex);
-        Betting.closeStreet(state);
-        return state;
-    };
-
-    test("a pot raise facing a bet is three times the bet plus the dead money", () => {
-        const state = flopWithBet();
-        const potBefore = Betting.potSoFar(state);         // $6 carried over
-        const bettor = state.actingSeatIndex;
-        Betting.raiseTo(state, bettor, 10);
-
-        const raiser = state.actingSeatIndex;
-        // Call $10, pot becomes $26, raise $26 → $36. Which is 3×10 + 6.
-        assert.equal(Betting.potRaiseTo(state, raiser), 36);
-        assert.equal(Betting.potRaiseTo(state, raiser), 3 * 10 + potBefore);
-    });
-
-    test("half pot facing that bet is $23", () => {
-        const state = flopWithBet();
-        Betting.raiseTo(state, state.actingSeatIndex, 10);
-        // Call $10, pot becomes $26, raise $13 → $23.
-        assert.equal(Betting.potRaiseTo(state, state.actingSeatIndex, 0.5), 23);
-    });
-
-    test("facing no bet at all it is a plain pot-sized bet", () => {
-        const state = flopWithBet();
-        assert.equal(state.currentBet, 0, "nobody has bet the flop");
-        assert.equal(Betting.toCall(state, state.seats[state.actingSeatIndex]), 0);
-        assert.equal(Betting.potRaiseTo(state, state.actingSeatIndex), Betting.potSoFar(state));
-    });
-});
-
-describe("it stays sane at the edges", () => {
-    test("a seat that doesn't exist gets zero rather than throwing", () => {
-        const state = makeTable({ seatCount: 6, seated: [0, 1], stack: 100 });
-        assert.equal(Betting.potRaiseTo(state, 99), 0);
-    });
-
-    test("the amount is always at least a call", () => {
-        // A raise-to below the current bet would be nonsense to offer. Every fraction
-        // from a tenth up lands at or above what the player owes.
-        const state = makeTable({ seatCount: 6, seated: [0, 1, 2, 3], stack: 200 });
-        Betting.beginHand(state);
-        const index = state.actingSeatIndex;
-        [0.1, 0.25, 0.5, 0.75, 1].forEach(fraction => {
-            assert.ok(Betting.potRaiseTo(state, index, fraction) >= state.currentBet,
-                `${fraction} of the pot should still cover the bet`);
-        });
-    });
-
-    test("cent-sized blinds don't drift", () => {
-        const state = makeTable({ seatCount: 6, seated: [0, 1, 2], stack: 20, smallBlind: 0.05, bigBlind: 0.1 });
-        Betting.beginHand(state);
-        // Pot $0.15, owes $0.10: call to $0.25, raise $0.25 → $0.35.
-        assert.equal(Betting.potRaiseTo(state, state.actingSeatIndex), 0.35);
-    });
-});
-
-describe("the amounts are ones the table can actually build", () => {
-    const CENTS = [{ value: 0.25 }, { value: 0.05 }, { value: 0.01 }];
-    const DOLLARS = [{ value: 1 }, { value: 5 }, { value: 25 }, { value: 100 }];
-
-    const table = (legend, smallBlind, bigBlind, stack = 200) => {
-        const state = makeTable({ seatCount: 6, seated: [0, 1, 2, 3], stack, smallBlind, bigBlind });
-        state.chipLegend = legend;
-        Betting.beginHand(state);
-        return state;
-    };
-
-    test("a half-pot that lands on a half chip is rounded up, not offered as it is", () => {
-        const state = table(DOLLARS, 1, 2);
-        // Honestly $4.50. No dollar chip makes fifty cents.
-        assert.equal(Betting.potRaiseTo(state, state.actingSeatIndex, 0.5), 5);
-        assert.equal(Money.chipBreakdown(5, DOLLARS).remainder, 0);
-    });
-
-    test("up rather than down — a shaved pot bet is not a pot bet", () => {
-        const state = table(DOLLARS, 1, 2);
-        assert.ok(Betting.potRaiseTo(state, state.actingSeatIndex, 0.5) > 4.5);
-    });
-
-    test("an amount the chips already make is left exactly alone", () => {
-        const state = table(DOLLARS, 1, 2);
-        assert.equal(Betting.potRaiseTo(state, state.actingSeatIndex), 7, "the pot raise was already whole");
-    });
-
-    test("a cent table keeps its cents", () => {
-        const state = table(CENTS, 0.05, 0.1);
-        // Pot $0.15, owes $0.10: call to $0.25, raise $0.25 → $0.35, which cent chips make.
-        assert.equal(Betting.potRaiseTo(state, state.actingSeatIndex), 0.35);
-        assert.equal(Money.chipBreakdown(0.35, CENTS).remainder, 0);
-    });
-
-    test("a legend that plainly isn't for these stakes is not applied", () => {
-        // Dollar chips on a 5c/10c game means somebody never filled the legend in.
-        // Rounding those blinds up to whole dollars would be the tool doing real
-        // damage on the strength of a stale field, so the amounts stay exact and the
-        // wrong legend stays visible.
-        const state = table(DOLLARS, 0.05, 0.1);
-        assert.equal(Betting.potRaiseTo(state, state.actingSeatIndex), 0.35);
-    });
-
-    test("a table with no legend at all gets exact amounts", () => {
-        const state = table([], 1, 2);
-        assert.equal(Betting.potRaiseTo(state, state.actingSeatIndex, 0.5), 4.5);
-    });
-
-    test("every fraction comes out buildable, and never shaved", () => {
-        const state = table(DOLLARS, 1, 2);
-        const index = state.actingSeatIndex;
-        const potAfterCall = Betting.potSoFar(state) + Betting.toCall(state, state.seats[index]);
-
-        [0.1, 0.25, 0.5, 0.75, 1].forEach(fraction => {
-            const value = Betting.potRaiseTo(state, index, fraction);
-            const exact = state.currentBet + potAfterCall * fraction;
-            assert.ok(value >= exact, `${fraction} of the pot should never be rounded down`);
-            assert.ok(value - exact < 1, `${fraction} of the pot should round by less than a chip`);
-            assert.equal(Money.chipBreakdown(value, DOLLARS).remainder, 0,
-                `${fraction} of the pot should be buildable from the table's chips`);
-        });
-    });
-});

tests/holdem/potSafety.test.js

@@ -1,103 +0,0 @@
-// Chips only ever leave this tool because a dealer meant them to. Starting the next
-// hand clears every seat's contribution, so an unresolved pot is simply destroyed —
-// the UI now asks first, and the number it quotes has to be exactly what goes.
-const { test, describe } = require("node:test");
-const assert = require("node:assert/strict");
-const { Betting, HoldemState, Money, makeTable, chipsOnTable } = require("./load");
-
-// The same measure the confirmation uses.
-const unresolvedPot = state => HoldemState.unresolvedContributions(state);
-
-describe("what starting the next hand destroys", () => {
-    test("the quoted amount is exactly what leaves the table", () => {
-        const state = makeTable({ seatCount: 6, seated: [0, 1, 2, 3], dealerSeatIndex: 0 });
-        Betting.beginHand(state);
-        Betting.call(state, 3); Betting.call(state, 0); Betting.call(state, 1); Betting.check(state, 2);
-        Betting.sweepToHandTotals(state);
-
-        const before = chipsOnTable(state);
-        const quoted = unresolvedPot(state);
-        assert.ok(quoted > 0, "there is a pot to warn about");
-
-        HoldemState.startNextHand(state);
-
-        assert.equal(
-            Money.toCents(chipsOnTable(state)),
-            Money.toCents(before - quoted),
-            "the dealer must be told the real number, not an approximation"
-        );
-    });
-
-    test("chips still in front of players on the current street are counted too", () => {
-        const state = makeTable({ seatCount: 4, seated: [0, 1, 2], dealerSeatIndex: 0 });
-        Betting.beginHand(state);          // blinds are `committed`, not yet banked
-        Betting.raiseTo(state, 0, 25);     // and so is a raise mid-street
-
-        const before = chipsOnTable(state);
-        const quoted = unresolvedPot(state);
-        HoldemState.startNextHand(state);
-
-        assert.equal(Money.toCents(chipsOnTable(state)), Money.toCents(before - quoted));
-        assert.ok(quoted >= 25, `a live raise has to be included; quoted ${quoted}`);
-    });
-
-    test("a hand that was paid out properly leaves nothing to warn about", () => {
-        const state = makeTable({ seatCount: 4, seated: [0, 1, 2], dealerSeatIndex: 0 });
-        Betting.beginHand(state);
-        Betting.call(state, 0); Betting.call(state, 1); Betting.check(state, 2);
-        Betting.sweepToHandTotals(state);
-
-        const pot = HoldemState.totalPot(state);
-        const payouts = [{ id: state.seats[0].id, label: "Ann", amount: pot }];
-        HoldemState.recordHand(state, payouts);
-        Betting.creditWinnings(state, payouts);
-        HoldemState.startNextHand(state);
-
-        assert.equal(unresolvedPot(state), 0, "nothing left over after a settled hand");
-    });
-
-    test("settling then dealing on conserves every chip", () => {
-        const state = makeTable({ seatCount: 6, seated: [0, 1, 2, 3], dealerSeatIndex: 0 });
-        const start = chipsOnTable(state);
-
-        for (let hand = 0; hand < 5; hand++) {
-            Betting.beginHand(state);
-            const live = Betting.liveSeats(state);
-            live.forEach(s => { if (Betting.toCall(state, s.player) > 0) Betting.call(state, s.index); });
-            Betting.sweepToHandTotals(state);
-
-            const pot = HoldemState.totalPot(state);
-            const winner = Betting.liveSeats(state)[0];
-            const payouts = [{ id: winner.player.id, label: "w", amount: pot }];
-            HoldemState.recordHand(state, payouts);
-            Betting.creditWinnings(state, payouts);
-            HoldemState.startNextHand(state);
-
-            assert.equal(chipsOnTable(state), start, `chips drifted on hand ${hand + 1}`);
-        }
-    });
-
-    test("an empty table has no phantom pot to warn about", () => {
-        const state = makeTable({ seatCount: 6, seated: [] });
-        assert.equal(unresolvedPot(state), 0);
-    });
-
-    test("a standing ante is never warned about, because it isn't lost", () => {
-        // The table default is a stand-in for "everyone puts the same in every hand",
-        // used by a dealer not tracking stacks at all. It re-applies to the next hand
-        // rather than going anywhere, so counting it would nag this dealer before
-        // every single hand — which is why the warning measures the fields
-        // startNextHand actually clears rather than the pot badge.
-        const state = makeTable({ seatCount: 9, seated: [0, 1] });
-        state.basePotAmount = 25;
-        state.seats.forEach(p => { p.amountOverride = null; });
-
-        // The base pot carries into the next hand, so nothing is being thrown away
-        // and the dealer must not be asked to confirm anything.
-        assert.equal(HoldemState.totalPot(state), 50, "the badge still shows a pot");
-        assert.equal(unresolvedPot(state), 0, "but none of it is at risk, so no warning");
-
-        HoldemState.startNextHand(state);
-        assert.equal(HoldemState.totalPot(state), 50, "the standing ante applies to the new hand too");
-    });
-});

tests/holdem/rake.test.js

@@ -1,230 +0,0 @@
-// The house's cut.
-//
-// A game that rakes has chips leaving the table every hand, and the bank check used to
-// call them missing: buy-ins in, chips on the felt, and a dealer told somebody had been
-// paid for chips they never got. The cut is the one thing here that is supposed to go
-// and not come back.
-const test = require("node:test");
-const { describe } = require("node:test");
-const assert = require("node:assert");
-const { Money, HoldemState, Betting, makeTable, chipsOnTable } = require("./load");
-
-const raking = (rake, extra = {}) => {
-    const state = makeTable({ seatCount: 6, stack: 200, ...extra });
-    state.rake = { percent: 0, cap: null, noFlopNoDrop: true, ...rake };
-    return state;
-};
-
-describe("what the house takes", () => {
-    test("nothing, unless somebody says otherwise", () => {
-        const state = makeTable({ seatCount: 6 });
-        assert.equal(state.rake.percent, 0);
-        assert.equal(HoldemState.rakeOn(state, 100), 0);
-    });
-
-    test("a percentage of the pot", () => {
-        assert.equal(HoldemState.rakeOn(raking({ percent: 5 }), 100), 5);
-        assert.equal(HoldemState.rakeOn(raking({ percent: 10 }), 60), 6);
-    });
-
-    test("no more than the cap", () => {
-        const state = raking({ percent: 5, cap: 5 });
-        assert.equal(HoldemState.rakeOn(state, 100), 5);
-        assert.equal(HoldemState.rakeOn(state, 400), 5, "still five on a pot four times the size");
-        assert.equal(HoldemState.rakeOn(state, 40), 2, "under the cap it is just the percentage");
-    });
-
-    test("no flop, no drop", () => {
-        const state = raking({ percent: 5 });
-        assert.equal(HoldemState.rakeOn(state, 100, false), 0, "hand ended before the flop");
-        assert.equal(HoldemState.rakeOn(state, 100, true), 5);
-    });
-
-    test("unless the house rakes every pot", () => {
-        const state = raking({ percent: 5, noFlopNoDrop: false });
-        assert.equal(HoldemState.rakeOn(state, 100, false), 5);
-    });
-
-    test("nothing it can't make out of the table's chips, rounded the players' way", () => {
-        // 5% of $30 is $1.50, and this table's smallest chip is a dollar.
-        const state = raking({ percent: 5 });
-        assert.equal(HoldemState.rakeOn(state, 30), 1);
-        // 5% of $10 is 50c — under a chip, so the house takes nothing at all.
-        assert.equal(HoldemState.rakeOn(state, 10), 0);
-    });
-
-    test("never more than the pot, whatever gets typed in", () => {
-        assert.equal(HoldemState.rakeOn(raking({ percent: 100 }), 20), 20);
-        assert.equal(HoldemState.rakeOn(raking({ percent: 5, cap: 500 }), 20), 1);
-    });
-
-    test("nothing out of an empty pot", () => {
-        assert.equal(HoldemState.rakeOn(raking({ percent: 5 }), 0), 0);
-    });
-});
-
-describe("taking it out of the pot", () => {
-    const winner = amount => [{ id: "a", label: "Ann", amount }];
-
-    test("one winner just gets the pot less the cut", () => {
-        const { payouts, rake } = HoldemState.applyRake(winner(100), 5);
-        assert.equal(rake, 5);
-        assert.deepEqual(payouts.map(p => p.amount), [95]);
-    });
-
-    test("a split pot shares what's left, in proportion", () => {
-        const { payouts } = HoldemState.applyRake(
-            [{ id: "a", label: "Ann", amount: 60 }, { id: "b", label: "Ben", amount: 40 }], 10);
-        assert.deepEqual(payouts.map(p => p.amount), [54, 36]);
-    });
-
-    test("the rounding leftovers go back to the players, not to the house", () => {
-        // $100 split three ways less $7: 93 doesn't divide evenly, and every cent of
-        // it has to land on somebody.
-        const { payouts, rake } = HoldemState.applyRake([
-            { id: "a", label: "Ann", amount: 34 },
-            { id: "b", label: "Ben", amount: 33 },
-            { id: "c", label: "Cal", amount: 33 },
-        ], 7);
-        assert.equal(rake, 7);
-        assert.equal(Money.round(payouts.reduce((sum, p) => sum + p.amount, 0)), 93);
-    });
-
-    test("what goes out plus what the house keeps is what was in the middle", () => {
-        [[100, 5], [37.5, 1.25], [1000, 0], [9, 9]].forEach(([pot, rake]) => {
-            const result = HoldemState.applyRake(winner(pot), rake);
-            assert.equal(Money.round(result.payouts[0].amount + result.rake), pot, `${pot} less ${rake}`);
-        });
-    });
-
-    test("asking for more than the pot takes the pot, not more", () => {
-        const { payouts, rake } = HoldemState.applyRake(winner(20), 50);
-        assert.equal(rake, 20);
-        assert.deepEqual(payouts.map(p => p.amount), [0]);
-    });
-
-    test("no rake, no change — the same payouts come back", () => {
-        const { payouts, rake } = HoldemState.applyRake(winner(80), 0);
-        assert.equal(rake, 0);
-        assert.deepEqual(payouts.map(p => p.amount), [80]);
-    });
-});
-
-describe("what the box is checked against", () => {
-    test("raked chips are gone but not missing", () => {
-        const state = raking({ percent: 5 });
-        state.seats.forEach(p => { p.buyIns = 200; });
-        const before = HoldemState.bankReconciliation(state);
-        assert.equal(before.balanced, true);
-
-        // The house takes $10 out of the middle: somebody's stack is $10 lighter.
-        state.seats[0].stack = 190;
-        state.rakeTaken = 10;
-        const after = HoldemState.bankReconciliation(state);
-        assert.equal(after.raked, 10);
-        assert.equal(after.balanced, true, "the check still balances");
-    });
-
-    test("and are told apart from the ones that went astray", () => {
-        const state = raking({ percent: 5 });
-        state.seats.forEach(p => { p.buyIns = 200; });
-        state.seats[0].stack = 180;
-        state.rakeTaken = 10;
-        const check = HoldemState.bankReconciliation(state);
-        assert.equal(check.raked, 10);
-        assert.equal(check.difference, -10, "ten dollars really are missing");
-        assert.equal(check.balanced, false);
-    });
-
-    test("a table that has never raked reads exactly as it did before", () => {
-        const state = makeTable({ seatCount: 6 });
-        state.seats.forEach(p => { p.buyIns = 100; p.stack = 100; });
-        const check = HoldemState.bankReconciliation(state);
-        assert.equal(check.raked, 0);
-        assert.equal(check.balanced, true);
-    });
-});
-
-describe("the record of it", () => {
-    test("the hand log keeps the pot as the table saw it, and the cut beside it", () => {
-        const state = raking({ percent: 5 });
-        HoldemState.recordHand(state, [{ id: state.seats[0].id, label: "P1", amount: 95 }], 5);
-        const [entry] = state.handHistory;
-        assert.equal(entry.pot, 100, "the pot in the middle");
-        assert.equal(entry.rake, 5);
-        assert.equal(entry.payouts[0].amount, 95, "what the winner actually took");
-    });
-
-    test("a hand with no rake records a zero rather than nothing", () => {
-        const state = makeTable({ seatCount: 6 });
-        HoldemState.recordHand(state, [{ id: state.seats[0].id, label: "P1", amount: 40 }]);
-        assert.equal(state.handHistory[0].rake, 0);
-        assert.equal(state.handHistory[0].pot, 40);
-    });
-
-    test("a table saved before the house took anything takes nothing", () => {
-        const parsed = JSON.parse(JSON.stringify(makeTable({ seatCount: 6 })));
-        delete parsed.rake;
-        delete parsed.rakeTaken;
-        const migrated = HoldemState.migrate(parsed);
-        assert.equal(migrated.rake.percent, 0);
-        assert.equal(migrated.rake.noFlopNoDrop, true);
-        assert.equal(migrated.rakeTaken, 0);
-    });
-
-    test("nonsense in a saved rake is cleaned up rather than trusted", () => {
-        const parsed = JSON.parse(JSON.stringify(makeTable({ seatCount: 6 })));
-        parsed.rake = { percent: -5, cap: -1, noFlopNoDrop: false };
-        parsed.rakeTaken = -20;
-        const migrated = HoldemState.migrate(parsed);
-        assert.equal(migrated.rake.percent, 0);
-        assert.equal(migrated.rake.cap, null);
-        assert.equal(migrated.rake.noFlopNoDrop, false, "that one is a real choice");
-        assert.equal(migrated.rakeTaken, 0);
-    });
-});
-
-describe("the file the dealer hands over", () => {
-    const { HandHistoryExport } = require("./load");
-
-    test("has a column for what the house took", () => {
-        const state = raking({ percent: 5 });
-        HoldemState.recordHand(state, [{ id: "a", label: "Ann", amount: 95 }], 5);
-        HoldemState.recordHand(state, [{ id: "b", label: "Ben", amount: 40 }], 0);
-
-        // Oldest hand first, and money as bare numbers so a spreadsheet can total it.
-        const csv = HandHistoryExport.toCsv(state.handHistory);
-        const [header, raked, unraked] = csv.split("\n");
-        assert.match(header, /Pot,House take,Payouts/);
-        assert.match(raked, /,100\.00,5\.00,/, "the raked hand says how much was taken");
-        assert.match(unraked, /,40\.00,0\.00,/, "and the unraked one says nothing was");
-    });
-});
-
-describe("a raked hand, end to end", () => {
-    test("the chips add up: stacks plus the house's cut equal what was bought in", () => {
-        // 5/10 blinds, so six callers make a pot big enough for 5% to be a whole chip.
-        // At 1/2 the same hand makes $12, 5% of which is 60c and rounds away to
-        // nothing — which is the rule working, not a hand worth testing the bank on.
-        const state = raking({ percent: 5, cap: 5 }, { smallBlind: 5, bigBlind: 10 });
-        state.seats.forEach(p => { p.buyIns = 200; });
-        Betting.beginHand(state);
-        // Everyone calls the big blind, then it is checked down.
-        state.seats.forEach((p, i) => { if (p.inHand) Betting.putIn(state, i, Betting.toCall(state, p)); });
-        Betting.sweepToHandTotals(state);
-
-        const pot = state.seats.reduce((sum, p) => sum + (Number(p.amountOverride) || 0), 0);
-        const rake = HoldemState.rakeOn(state, pot, true);
-        assert.equal(pot, 60);
-        assert.equal(rake, 3);
-
-        const { payouts } = HoldemState.applyRake([{ id: state.seats[0].id, label: "P1", amount: pot }], rake);
-        state.rakeTaken = rake;
-        HoldemState.recordHand(state, payouts, rake);
-        Betting.creditWinnings(state, payouts);
-        HoldemState.startNextHand(state);
-
-        assert.equal(Money.round(chipsOnTable(state) + state.rakeTaken), 1200);
-        assert.equal(HoldemState.bankReconciliation(state).balanced, true);
-    });
-});

tests/holdem/reopeningBetting.test.js

@@ -1,143 +0,0 @@
-// When does a bet reopen the action? The most misread rule in poker, and the one a
-// home game argues about longest: a player shoving in less than a full raise does not
-// give everybody behind them another go.
-//
-// TDA Rule 44 — an all-in wager of less than a full raise does not reopen the betting
-// to a player who has already acted and is not facing a full raise.
-const { test, describe } = require("node:test");
-const assert = require("node:assert/strict");
-const { Betting, makeTable, chipsOnTable } = require("./load");
-
-const actedFlags = state => state.seats
-    .map((p, i) => ({ seat: i, acted: p.hasActed, live: p.inHand && !p.folded }))
-    .filter(s => s.live);
-
-describe("a short all-in does not reopen the betting", () => {
-    // Blinds 1/2. Seat 4 raises to 10 (a full raise of 8). Seat 1 calls.
-    // Seat 2 is all-in for 13 — three more, where a full raise needs eight.
-    const shortAllInTable = () => {
-        const state = makeTable({ seatCount: 4, seated: [0, 1, 2, 3], stack: 100, dealerSeatIndex: 0 });
-        state.seats[1].stack = 13;
-        Betting.beginHand(state);
-        Betting.raiseTo(state, 3, 10);
-        Betting.call(state, 0);
-        return state;
-    };
-
-    test("players who already acted are not asked to act again", () => {
-        const state = shortAllInTable();
-        assert.equal(state.seats[0].hasActed, true, "seat 1 has called");
-        assert.equal(state.seats[3].hasActed, true, "seat 4 has raised");
-
-        Betting.allIn(state, 1);
-
-        assert.equal(state.seats[0].hasActed, true, "seat 1 must not be reopened");
-        assert.equal(state.seats[3].hasActed, true, "seat 4 must not be reopened");
-    });
-
-    test("but they do still owe the difference", () => {
-        const state = shortAllInTable();
-        Betting.allIn(state, 1);
-
-        assert.equal(Betting.toCall(state, state.seats[0]), 3, "seat 1 owes the extra 3");
-        assert.equal(Betting.isStreetComplete(state), false, "so the street isn't over");
-    });
-
-    test("a player who had not acted yet keeps full rights", () => {
-        const state = shortAllInTable();
-        assert.equal(state.seats[2].hasActed, false, "seat 3 hasn't acted");
-        Betting.allIn(state, 1);
-        assert.equal(state.seats[2].hasActed, false, "and still hasn't — they may still raise");
-    });
-
-    test("the minimum raise is not shrunk by the short all-in", () => {
-        const state = shortAllInTable();
-        assert.equal(state.lastRaiseSize, 8);
-
-        Betting.allIn(state, 1);
-
-        assert.equal(state.lastRaiseSize, 8, "still the last *full* raise");
-        assert.equal(Betting.minRaiseTo(state), 21, "13 to call plus a full raise of 8");
-    });
-
-    test("calling the short all-in ends the street", () => {
-        const state = shortAllInTable();
-        Betting.allIn(state, 1);
-        Betting.call(state, 2);   // seat 3, who had full rights, just calls
-        Betting.call(state, 3);
-        Betting.call(state, 0);
-        assert.equal(Betting.isStreetComplete(state), true);
-    });
-
-    test("no chips are created or lost by any of it", () => {
-        const state = makeTable({ seatCount: 4, seated: [0, 1, 2, 3], stack: 100, dealerSeatIndex: 0 });
-        state.seats[1].stack = 13;
-        const start = chipsOnTable(state);
-        Betting.beginHand(state);
-        Betting.raiseTo(state, 3, 10);
-        Betting.call(state, 0);
-        Betting.allIn(state, 1);
-        Betting.call(state, 2);
-        Betting.call(state, 3);
-        Betting.call(state, 0);
-        assert.equal(chipsOnTable(state), start);
-    });
-});
-
-describe("a full raise still reopens the betting", () => {
-    test("an all-in that is a full raise or more reopens everyone", () => {
-        const state = makeTable({ seatCount: 4, seated: [0, 1, 2, 3], stack: 100, dealerSeatIndex: 0 });
-        state.seats[1].stack = 40;
-        Betting.beginHand(state);
-        Betting.raiseTo(state, 3, 10);
-        Betting.call(state, 0);
-
-        Betting.allIn(state, 1);   // to 40: an increase of 30, well over the 8 needed
-
-        assert.equal(state.seats[0].hasActed, false, "seat 1 gets another go");
-        assert.equal(state.seats[3].hasActed, false, "and so does seat 4");
-        assert.equal(state.lastRaiseSize, 30);
-        assert.equal(Betting.minRaiseTo(state), 70);
-    });
-
-    test("an ordinary raise reopens everyone", () => {
-        const state = makeTable({ seatCount: 4, seated: [0, 1, 2, 3], dealerSeatIndex: 0 });
-        Betting.beginHand(state);
-        Betting.call(state, 3);
-        Betting.call(state, 0);
-        assert.equal(state.seats[3].hasActed, true);
-
-        Betting.raiseTo(state, 1, 10);
-
-        assert.equal(state.seats[3].hasActed, false);
-        assert.equal(state.seats[0].hasActed, false);
-    });
-
-    test("a raise exactly the size of the last one counts as full", () => {
-        const state = makeTable({ seatCount: 4, seated: [0, 1, 2, 3], stack: 100, dealerSeatIndex: 0 });
-        Betting.beginHand(state);
-        Betting.raiseTo(state, 3, 10);      // raise of 8
-        Betting.call(state, 0);
-
-        Betting.raiseTo(state, 1, 18);      // exactly 8 more — a legal minimum raise
-
-        assert.equal(state.seats[0].hasActed, false, "a minimum raise still reopens");
-        assert.equal(state.lastRaiseSize, 8);
-    });
-
-    test("the first raise of a street is measured against the big blind", () => {
-        const state = makeTable({ seatCount: 4, seated: [0, 1, 2, 3], stack: 100, dealerSeatIndex: 0 });
-        Betting.beginHand(state);
-        Betting.call(state, 3);
-        Betting.call(state, 0);
-        Betting.call(state, 1);
-        Betting.check(state, 2);
-        Betting.closeStreet(state);         // to the flop, no bet yet
-
-        const first = Betting.nextToAct(state, state.dealerSeatIndex);
-        Betting.raiseTo(state, first, 2);   // a bet of exactly one big blind
-
-        const others = state.seats.filter((p, i) => p.inHand && !p.folded && i !== first);
-        assert.ok(others.every(p => p.hasActed === false), "a full-sized opening bet reopens everyone");
-    });
-});

tests/holdem/robustness.test.js

@@ -1,144 +0,0 @@
-// Values a dealer can actually produce with a typo, and the ones a corrupted save
-// can produce on its own. None of these should be able to move chips.
-const { test, describe } = require("node:test");
-const assert = require("node:assert/strict");
-const { Betting, HoldemState, makeTable, chipsOnTable } = require("./load");
-
-describe("a stack can never go negative", () => {
-    test("a mistyped negative stack reads as empty, not as owing chips", () => {
-        const state = makeTable({ seatCount: 4, seated: [0, 1, 2] });
-        state.seats[0].stack = -50;
-        assert.equal(Betting.stackOf(state, state.seats[0]), 0);
-    });
-
-    test("a negative stack can't be bet with", () => {
-        const state = makeTable({ seatCount: 4, seated: [0, 1, 2] });
-        state.seats[0].stack = -50;
-        const before = state.seats.reduce((s, p) => s + Math.max(0, Number(p.stack) || 0), 0);
-
-        const moved = Betting.putIn(state, 0, 25);
-
-        assert.equal(moved, 0, "nothing moves out of an empty stack");
-        assert.ok(Betting.stackOf(state, state.seats[0]) >= 0);
-        assert.equal(state.seats[0].committed, 0, "and nothing appears in front of them");
-        assert.ok(state.seats.reduce((s, p) => s + Math.max(0, Number(p.stack) || 0), 0) <= before);
-    });
-
-    test("a negative table default doesn't hand everyone a negative stack", () => {
-        const state = makeTable({ seatCount: 4, seated: [0, 1, 2] });
-        state.seats.forEach(p => { p.stack = null; });
-        state.defaultStack = -100;
-        state.seats.forEach(p => assert.equal(Betting.stackOf(state, p), 0));
-    });
-
-    test("a negative stack doesn't make a player look like they can still bet", () => {
-        const state = makeTable({ seatCount: 4, seated: [0, 1, 2] });
-        state.seats[0].stack = -50;
-        assert.ok(!Betting.seatsWithChips(state).some(s => s.index === 0));
-    });
-});
-
-describe("blinds that can't be posted", () => {
-    test("negative blinds post nothing rather than paying players to sit down", () => {
-        const state = makeTable({ seatCount: 4, seated: [0, 1, 2] });
-        state.smallBlind = -5;
-        state.bigBlind = -10;
-        const before = chipsOnTable(state);
-
-        Betting.beginHand(state);
-
-        state.seats.forEach(p => assert.equal(p.committed, 0));
-        assert.equal(chipsOnTable(state), before);
-    });
-
-    test("an unreadable blind doesn't wedge the hand", () => {
-        const state = makeTable({ seatCount: 4, seated: [0, 1, 2] });
-        state.bigBlind = NaN;
-        state.smallBlind = 1;
-
-        Betting.beginHand(state);
-
-        assert.ok(Number.isFinite(state.currentBet), "the bet to match is still a number");
-        assert.ok(!Number.isNaN(Betting.potSoFar(state)));
-    });
-
-    test("blinds nobody can cover put those players all-in and move on", () => {
-        const state = makeTable({ seatCount: 4, seated: [0, 1, 2], stack: 10 });
-        state.smallBlind = 500;
-        state.bigBlind = 1000;
-        const before = chipsOnTable(state);
-
-        Betting.beginHand(state);
-
-        assert.equal(chipsOnTable(state), before, "no chips invented covering a blind");
-        state.seats.forEach(p => assert.ok((Number(p.stack) || 0) >= 0));
-        assert.ok(state.actingSeatIndex === null || state.seats[state.actingSeatIndex].inHand);
-    });
-});
-
-describe("a saved table that comes back damaged", () => {
-    test("unreadable storage falls back to a fresh table", () => {
-        // load() has to survive whatever is in localStorage, because the alternative
-        // is a dealer opening the tool mid-session to a blank screen.
-        const original = globalThis.localStorage;
-        globalThis.localStorage = {
-            getItem: () => "{not json at all",
-            setItem: () => {},
-            removeItem: () => {},
-        };
-        const state = HoldemState.load();
-        globalThis.localStorage = original;
-
-        assert.equal(state.seats.length, HoldemState.DEFAULT_SEAT_COUNT);
-        assert.equal(state.handNumber, 1);
-    });
-
-    test("a save missing its seats is treated as no save at all", () => {
-        const original = globalThis.localStorage;
-        globalThis.localStorage = {
-            getItem: () => JSON.stringify({ handNumber: 7, smallBlind: 3 }),
-            setItem: () => {},
-            removeItem: () => {},
-        };
-        const state = HoldemState.load();
-        globalThis.localStorage = original;
-
-        assert.ok(Array.isArray(state.seats) && state.seats.length > 0);
-    });
-
-    test("a save from before a field existed gets the field, not undefined", () => {
-        const original = globalThis.localStorage;
-        globalThis.localStorage = {
-            getItem: () => JSON.stringify({
-                seats: [{ id: "a", name: "Ann", inHand: true }, { id: "b", name: "Ben", inHand: true }],
-                handNumber: 4,
-            }),
-            setItem: () => {},
-            removeItem: () => {},
-        };
-        const state = HoldemState.load();
-        globalThis.localStorage = original;
-
-        assert.equal(state.blindOverride, null);
-        assert.equal(state.street, "preflop");
-        state.seats.forEach(p => {
-            assert.equal(p.committed, 0);
-            assert.equal(p.hasActed, false);
-            assert.equal(p.buyIns, 0);
-        });
-        // And it has to be playable, not just parseable.
-        assert.doesNotThrow(() => Betting.beginHand(state));
-    });
-
-    test("storage that refuses to be written doesn't take the table down", () => {
-        const original = globalThis.localStorage;
-        globalThis.localStorage = {
-            getItem: () => null,
-            setItem: () => { throw new Error("QuotaExceededError"); },
-            removeItem: () => {},
-        };
-        const state = HoldemState.createDefault();
-        assert.doesNotThrow(() => HoldemState.save(state), "a full disk must not break the hand in progress");
-        globalThis.localStorage = original;
-    });
-});

tests/holdem/runUiAudit.js

@@ -1,151 +0,0 @@
-// Drives uiAudit.js over the dealer's surfaces at every viewport worth caring about.
-//
-//   node tests/holdem/runUiAudit.js [baseUrl]
-//
-// Needs Playwright available (`npx playwright install chromium` once). It is
-// deliberately NOT wired into the unit-test suite or CI, because that suite is
-// dependency-free and runs in a second — this one needs a browser and a running
-// site. Run it after any change that adds or resizes a control.
-//
-// No Playwright to hand? Open the page, paste tests/holdem/uiAudit.js into devtools,
-// and call LayoutAudit.runAll(). Same checks, one viewport.
-const path = require("path");
-
-const BASE = process.argv[2] || "http://localhost:5299";
-const AUDIT = path.join(__dirname, "uiAudit.js");
-
-// Portrait phones, tablets, desktops, then the same phones on their side — landscape
-// is where this layout has broken most often, because the table is sized from width
-// and the action bar is fixed to a very short viewport.
-const VIEWPORTS = [
-    [360, 640, "Galaxy S8"], [375, 667, "iPhone SE"], [390, 844, "iPhone 14"],
-    [412, 915, "Pixel 7"], [430, 932, "iPhone Pro Max"],
-    [768, 1024, "iPad"], [834, 1112, "iPad Air"], [1024, 1366, "iPad Pro"],
-    [1280, 900, "desktop"], [1600, 1000, "wide desktop"],
-    [640, 360, "S8 landscape"], [667, 375, "SE landscape"], [844, 390, "iPhone landscape"],
-];
-
-const OVERLAYS = [
-    ["rulings", () => document.getElementById("openRulingsBtn").click()],
-    ["seat menu", () => SeatMenu.open(HoldemState.load(), {}, 0)],
-    ["card picker", () => { document.getElementById("cardPickerOverlay").hidden = false; }],
-    ["add chips", () => AddChips.open(HoldemState.load(), 0, () => {})],
-    ["pot wizard", () => document.getElementById("resolvePotBtn").click()],
-];
-
-// A table part-way through a real night: long names, uneven stacks, a hand log.
-function seedTable() {
-    const state = HoldemState.createDefault();
-    HoldemState.resizeSeats(state, 9);
-    [["Christopher", 1200], ["Mike from work", 800], ["Alexandra", 1500], ["Bob", 250], ["Dee", 600]]
-        .forEach(([name, cash], i) => {
-            state.seats[i].name = name;
-            state.seats[i].inHand = true;
-            state.seats[i].buyIns = cash;
-            state.seats[i].stack = cash;
-        });
-    state.smallBlind = 5;
-    state.bigBlind = 10;
-    for (let hand = 1; hand <= 4; hand++) {
-        state.handHistory.push({
-            handNumber: hand, timestamp: Date.now(), pot: 120,
-            payouts: [{ id: state.seats[hand % 5].id, label: "P", amount: 120 }],
-            ledger: state.seats.slice(0, 5).map(p => ({ id: p.id, name: p.name, in: 30, won: 0 })),
-        });
-    }
-    state.handNumber = 5;
-    HoldemState.save(state);
-}
-
-async function main() {
-    let chromium;
-    try {
-        ({ chromium } = require("playwright"));
-    } catch {
-        console.error("This script needs Playwright: npm i -D playwright && npx playwright install chromium");
-        console.error("Or paste tests/holdem/uiAudit.js into devtools and call LayoutAudit.runAll().");
-        process.exit(2);
-    }
-
-    const browser = await chromium.launch();
-    const failures = [];
-    const warnings = [];
-    let checks = 0;
-
-    // Twice over: once with a mouse, once with a thumb. The 44px rule stands itself
-    // down where `hover: hover` says there's a pointer, and a headless desktop browser
-    // is a pointer — so a single pass here has never once measured a touch target,
-    // however many viewports it visited. The phone-sized ones are exactly the pass that
-    // needs it.
-    for (const touch of [false, true]) {
-        const context = await browser.newContext(touch
-            ? { hasTouch: true, isMobile: true, deviceScaleFactor: 3 }
-            : {});
-        const page = await context.newPage();
-        const hand = touch ? "touch" : "mouse";
-
-        for (const [width, height, rawLabel] of VIEWPORTS) {
-            const label = `${rawLabel} · ${hand}`;
-            await page.setViewportSize({ width, height });
-
-            await page.goto(`${BASE}/Casino/TexasHoldem`);
-            await page.evaluate(seedTable);
-            await page.goto(`${BASE}/Casino/TexasHoldem`);
-            await page.click("#nextHandBtn");
-            await page.waitForTimeout(300);
-            await page.evaluate(() => document.querySelectorAll("details.sidebarPanel").forEach(d => { d.open = true; }));
-            await page.addScriptTag({ path: AUDIT });
-
-            const table = await page.evaluate(() => LayoutAudit.runAll());
-            checks++;
-            if (!table.clean) failures.push({ where: `table · ${label} ${width}x${height}`, offenders: table.failed.flatMap(f => f.offenders) });
-            table.warnings.forEach(w => warnings.push(`${label}: ${w}`));
-
-            for (const [name, open] of OVERLAYS) {
-                await page.evaluate(open);
-                await page.waitForTimeout(180);
-                checks++;
-                const result = await page.evaluate(() => {
-                    const overlay = [...document.querySelectorAll("[id$='Overlay']")].find(o => !o.hidden);
-                    if (!overlay) return { offenders: [] };
-                    return LayoutAudit.occlusion(`#${overlay.id} button, #${overlay.id} a, #${overlay.id} input`);
-                });
-                await page.evaluate(() => document.querySelectorAll("[id$='Overlay']").forEach(o => { o.hidden = true; }));
-                if (result.offenders.length) failures.push({ where: `${name} · ${label} ${width}x${height}`, offenders: result.offenders });
-            }
-        }
-
-        for (const [width, height, rawLabel] of VIEWPORTS.filter((_, i) => i % 4 === 0)) {
-            const label = `${rawLabel} · ${hand}`;
-            await page.setViewportSize({ width, height });
-            await page.goto(`${BASE}/Casino/TexasHoldem/QuickSplit`);
-            await page.evaluate(() => {
-                const button = [...document.querySelectorAll("button")].find(b => /all.?in/i.test(b.textContent));
-                if (button) button.click();
-            });
-            await page.addScriptTag({ path: AUDIT });
-            checks++;
-            const result = await page.evaluate(() => LayoutAudit.runAll({ occlusionSelector: "main button, main a, main input" }));
-            if (!result.clean) failures.push({ where: `quick split · ${label} ${width}x${height}`, offenders: result.failed.flatMap(f => f.offenders) });
-            result.warnings.forEach(w => warnings.push(`quick split · ${label}: ${w}`));
-        }
-
-        await context.close();
-    }
-
-    await browser.close();
-
-    console.log(`${checks} audits across ${VIEWPORTS.length} viewports, with a mouse and with a thumb`);
-    warnings.forEach(w => console.log(`  note: ${w}`));
-    if (failures.length === 0) {
-        console.log("clean");
-        return;
-    }
-    failures.forEach(f => {
-        console.log(`\nFAIL ${f.where}`);
-        f.offenders.forEach(o => console.log(`  ${o}`));
-    });
-    process.exit(1);
-}
-
-main();

tests/holdem/saveFailure.test.js

@@ -1,95 +0,0 @@
-// What happens when the browser refuses to save.
-//
-// The table keeps working — that was always true and is still the right behaviour.
-// What was missing is anybody being told, which is the same shape of fault the bank
-// check exists for: silent until it's too late to act on.
-const test = require("node:test");
-const assert = require("node:assert");
-const { HoldemState, makeTable } = require("./load");
-
-function withStorage(behaviour) {
-    const calls = [];
-    globalThis.localStorage = {
-        setItem(key, value) {
-            calls.push({ key, value });
-            if (behaviour === "throw") {
-                const error = new Error("QuotaExceededError");
-                error.name = "QuotaExceededError";
-                throw error;
-            }
-        },
-        getItem: () => null,
-        removeItem() {},
-    };
-    return calls;
-}
-
-test.beforeEach(() => {
-    HoldemState.saveFailed = false;
-    HoldemState.onSaveFailed = null;
-});
-
-test.after(() => {
-    delete globalThis.localStorage;
-    HoldemState.saveFailed = false;
-    HoldemState.onSaveFailed = null;
-});
-
-test("a save that works says so and leaves no mark", () => {
-    withStorage("ok");
-    const state = makeTable({ seatCount: 6, seated: [0, 1], stack: 100 });
-
-    assert.equal(HoldemState.save(state), true);
-    assert.equal(HoldemState.saveFailed, false);
-});
-
-test("a save that fails says so rather than throwing", () => {
-    withStorage("throw");
-    const state = makeTable({ seatCount: 6, seated: [0, 1], stack: 100 });
-
-    assert.equal(HoldemState.save(state), false);
-    assert.equal(HoldemState.saveFailed, true);
-});
-
-test("the table is told once, not on every action", () => {
-    // A dealer taps the bar thirty times a hand and doesn't need thirty warnings.
-    withStorage("throw");
-    const state = makeTable({ seatCount: 6, seated: [0, 1], stack: 100 });
-    let told = 0;
-    HoldemState.onSaveFailed = () => { told++; };
-
-    for (let i = 0; i < 20; i++) HoldemState.save(state);
-
-    assert.equal(told, 1);
-});
-
-test("the failure is handed the error, so the reason can be reported later", () => {
-    withStorage("throw");
-    const state = makeTable({ seatCount: 6, seated: [0, 1], stack: 100 });
-    let seen = null;
-    HoldemState.onSaveFailed = error => { seen = error; };
-
-    HoldemState.save(state);
-
-    assert.equal(seen && seen.name, "QuotaExceededError");
-});
-
-test("a failing save still doesn't stop the table", () => {
-    // The chips have already moved in memory; refusing to continue would be worse
-    // than not persisting.
-    withStorage("throw");
-    const state = makeTable({ seatCount: 6, seated: [0, 1, 2], stack: 100 });
-    state.seats[0].stack = 175;
-
-    assert.doesNotThrow(() => HoldemState.save(state));
-    assert.equal(state.seats[0].stack, 175);
-});
-
-test("no listener is not an error", () => {
-    withStorage("throw");
-    const state = makeTable({ seatCount: 6, seated: [0, 1], stack: 100 });
-    HoldemState.onSaveFailed = null;
-
-    assert.doesNotThrow(() => HoldemState.save(state));
-    assert.equal(HoldemState.saveFailed, true);
-});

tests/holdem/seatRing.test.js

@@ -1,241 +0,0 @@
-// Where the seats sit on the rim.
-//
-// The ring used to space seats by angle, which is only the same as spacing them evenly
-// when the felt is a circle. On a phone held sideways the felt is 601x126, and equal
-// angles put four seats down each steep end, 20px apart, with pucks 72px tall — so a
-// seat's centre belonged to its neighbour and tapping a player got the wrong one.
-const test = require("node:test");
-const { describe } = require("node:test");
-const assert = require("node:assert");
-const { Render } = require("./load");
-
-// The seats as a dealer sees them: pixels on a felt of a given size.
-const ringPixels = (count, width, height, rx = 44, ry = 42) => {
-    const aspect = width / height;
-    return Array.from({ length: count }, (_, i) => {
-        const pos = Render.positionOnRing(i, count, rx, ry, aspect);
-        return { x: (pos.left / 100) * width, y: (pos.top / 100) * height };
-    });
-};
-
-const gaps = (points) => points.map((p, i) => {
-    const next = points[(i + 1) % points.length];
-    return Math.hypot(next.x - p.x, next.y - p.y);
-});
-
-// What the ring did before: one turn cut into equal angles.
-const byAngle = (index, count, rx, ry) => {
-    const radians = ((-90 + (360 / count) * index) * Math.PI) / 180;
-    return { left: 50 + rx * Math.cos(radians), top: 50 + ry * Math.sin(radians) };
-};
-
-describe("a round table", () => {
-    test("still spaces seats by angle, because on a circle that is the same thing", () => {
-        for (let seat = 0; seat < 9; seat++) {
-            const now = Render.positionOnRing(seat, 9, 40, 40, 1);
-            const before = byAngle(seat, 9, 40, 40);
-            assert.ok(Math.abs(now.left - before.left) < 0.2, `seat ${seat} left`);
-            assert.ok(Math.abs(now.top - before.top) < 0.2, `seat ${seat} top`);
-        }
-    });
-
-    test("seat one is at the top, whatever shape the felt is", () => {
-        [[600, 600], [601, 126], [351, 351], [949, 683]].forEach(([w, h]) => {
-            const first = Render.positionOnRing(0, 10, 44, 42, w / h);
-            assert.ok(Math.abs(first.left - 50) < 0.01, `${w}x${h} left`);
-            assert.ok(first.top < 50, `${w}x${h} is above the middle`);
-        });
-    });
-});
-
-describe("a felt wider than it is tall", () => {
-    // 640x360 landscape: the size the audit was failing at.
-    const wide = () => ringPixels(10, 601, 126);
-
-    const byAnglePixels = () => Array.from({ length: 10 }, (_, i) => {
-        const pos = byAngle(i, 10, 44, 42);
-        return { x: (pos.left / 100) * 601, y: (pos.top / 100) * 126 };
-    });
-
-    // The two seats at the right-hand end, which is where they crowd.
-    const endPairApart = (seats) => {
-        const rightmost = [...seats].sort((a, b) => b.x - a.x).slice(0, 2);
-        return Math.abs(rightmost[0].y - rightmost[1].y);
-    };
-
-    test("pulls the pair at each end apart", () => {
-        // They still share the end — ten seats on a rim this flat have nowhere else to
-        // be — but they stop sitting on top of each other.
-        const now = endPairApart(wide());
-        const before = endPairApart(byAnglePixels());
-        assert.ok(now > before * 1.4, `${now.toFixed(1)}px now, ${before.toFixed(1)}px before`);
-    });
-
-    test("nearly doubles the room between the closest two neighbours", () => {
-        // Not equal spacing in a straight line — at the ends the rim turns back on
-        // itself, so the same walk along it covers less ground across. Even there the
-        // gap goes from a third of a puck to most of one.
-        const now = Math.min(...gaps(wide()));
-        const before = Math.min(...gaps(byAnglePixels()));
-        assert.ok(now > before * 1.7, `${now.toFixed(1)}px now, ${before.toFixed(1)}px before`);
-        assert.ok(now > 55, `${now.toFixed(1)}px`);
-    });
-
-    test("never sits two seats on the same spot", () => {
-        const seats = wide();
-        seats.forEach((seat, i) => {
-            seats.slice(i + 1).forEach((other, j) => {
-                const apart = Math.hypot(seat.x - other.x, seat.y - other.y);
-                assert.ok(apart > 50, `seats ${i + 1} and ${i + j + 2} are ${apart.toFixed(1)}px apart`);
-            });
-        });
-    });
-});
-
-describe("how close the closest two seats come", () => {
-    // What decides whether the pucks shrink. Rim length per seat was the first answer
-    // and it is the wrong question: it measures the walk between two seats, not the
-    // gap. On a long oval the rim doubles back at the ends, so two seats a long walk
-    // apart end up stacked one above the other.
-    const gap = (count, width, height) => Render.closestSeatGapPx(count, { width, height });
-
-    test("a flat table no longer stacks two seats at each end", () => {
-        // 616x96: the landscape felt on a 640x360 phone once the bar has grown. On an
-        // ellipse that flat the end pair came out 25px apart with 64px pucks. The rim
-        // is a stadium at this shape, so an end holds one seat.
-        assert.ok(gap(6, 616, 96) > 70, `${gap(6, 616, 96).toFixed(0)}px apart`);
-        assert.ok(gap(12, 616, 96) > 40, `${gap(12, 616, 96).toFixed(0)}px apart at twelve seats`);
-    });
-
-    test("an ellipse's ends are still closer than its rim suggests, which is why the shape changes", () => {
-        // Same felt, forced through the ellipse the tool uses for rounder tables.
-        const asEllipse = Render.ringAngles(6, 44, 42, 616 / 96).map(angle => ({
-            x: ((50 + 44 * Math.cos(angle)) / 100) * 616,
-            y: ((50 + 42 * Math.sin(angle)) / 100) * 96,
-        }));
-        const closest = asEllipse.reduce((least, point, i) => {
-            const next = asEllipse[(i + 1) % asEllipse.length];
-            return Math.min(least, Math.hypot(point.x - next.x, point.y - next.y));
-        }, Infinity);
-        assert.ok(closest < 70, `${closest.toFixed(0)}px`);
-        assert.ok(gap(6, 616, 96) > closest * 1.3,
-            `stadium ${gap(6, 616, 96).toFixed(0)}px against ellipse ${closest.toFixed(0)}px`);
-    });
-
-    test("a round table's neighbours are about as far apart as the rim says", () => {
-        const rim = (Math.PI * 2 * 0.43 * 400) / 9;
-        assert.ok(Math.abs(gap(9, 400, 400) - rim) < rim * 0.15);
-    });
-
-    test("more seats, less room, in that order", () => {
-        assert.ok(gap(12, 400, 400) < gap(9, 400, 400));
-        assert.ok(gap(9, 400, 400) < gap(6, 400, 400));
-        assert.ok(gap(6, 400, 400) < gap(6, 800, 800), "and a bigger table gives more");
-    });
-
-    test("nothing to measure between fewer than two seats", () => {
-        assert.equal(gap(1, 400, 400), Infinity);
-        assert.equal(gap(9, 0, 0), Infinity);
-    });
-});
-
-describe("which rim a table gets", () => {
-    // An ellipse until the table is much wider than tall, then a stadium: two rails
-    // and a half-round cap at each end, which is how a real poker table is built.
-    const shape = (width, height) => {
-        const aspect = width / height;
-        return 44 * aspect > 42 * Render.STADIUM_RATIO ? "stadium" : "ellipse";
-    };
-
-    test("every layout the tool had keeps the ellipse", () => {
-        assert.equal(shape(844, 608), "ellipse", "desktop");
-        assert.equal(shape(600, 600), "ellipse", "tablet");
-        assert.equal(shape(278, 314), "ellipse", "phone upright");
-        assert.equal(shape(336, 240), "ellipse", "short phone upright");
-    });
-
-    test("a phone on its side gets the stadium", () => {
-        assert.equal(shape(528, 73), "stadium");
-        assert.equal(shape(780, 113), "stadium");
-    });
-
-    test("the cap holds one seat instead of stacking two", () => {
-        // Six seats on a 616x96 rim: the walk between neighbours has to be longer than
-        // the cap, or two of them end up on the same half-circle.
-        const halfWidth = 44 * (616 / 96), halfHeight = 42;
-        const perimeter = 4 * (halfWidth - halfHeight) + 2 * Math.PI * halfHeight;
-        assert.ok(perimeter / 6 > Math.PI * halfHeight, "one seat per cap at six-handed");
-    });
-
-    test("seat one is still at the top centre, and the ring still mirrors", () => {
-        const seats = Array.from({ length: 8 }, (_, i) => Render.positionOnRing(i, 8, 44, 42, 616 / 96));
-        assert.ok(Math.abs(seats[0].left - 50) < 0.01);
-        assert.ok(seats[0].top < 50);
-        for (let seat = 1; seat < 4; seat++) {
-            const mirrored = seats[8 - seat];
-            assert.ok(Math.abs((seats[seat].left - 50) + (mirrored.left - 50)) < 0.01, `seat ${seat} across`);
-            assert.ok(Math.abs(seats[seat].top - mirrored.top) < 0.01, `seat ${seat} down`);
-        }
-    });
-
-    test("nobody is drawn off the felt", () => {
-        Array.from({ length: 12 }, (_, i) => Render.positionOnRing(i, 12, 44, 42, 616 / 96)).forEach((seat, i) => {
-            assert.ok(seat.left >= 5 && seat.left <= 95, `seat ${i + 1} across at ${seat.left.toFixed(1)}%`);
-            assert.ok(seat.top >= 7 && seat.top <= 93, `seat ${i + 1} down at ${seat.top.toFixed(1)}%`);
-        });
-    });
-});
-
-describe("the shape of the ring", () => {
-    test("is a mirror image left to right", () => {
-        const seats = ringPixels(10, 601, 126);
-        for (let seat = 1; seat < 5; seat++) {
-            const mirrored = seats[10 - seat];
-            assert.ok(Math.abs((seats[seat].x - 300.5) + (mirrored.x - 300.5)) < 0.5, `seat ${seat} across`);
-            assert.ok(Math.abs(seats[seat].y - mirrored.y) < 0.5, `seat ${seat} down`);
-        }
-    });
-
-    test("holds for the smallest and largest tables the seat count allows", () => {
-        [2, 3, 4, 9, 12, 24].forEach(count => {
-            const seats = ringPixels(count, 601, 126);
-            assert.equal(seats.length, count);
-            seats.forEach((seat, i) => {
-                assert.ok(Number.isFinite(seat.x) && Number.isFinite(seat.y), `${count}-handed seat ${i + 1}`);
-                assert.ok(seat.x >= 0 && seat.x <= 601, `${count}-handed seat ${i + 1} is on the felt`);
-            });
-            assert.ok(Math.min(...gaps(seats)) > 0, `${count}-handed seats are distinct`);
-        });
-    });
-
-    test("shares the rim out equally on a round table at any size", () => {
-        [3, 6, 9, 10, 24].forEach(count => {
-            const spacing = gaps(ringPixels(count, 500, 500, 40, 40));
-            const shortest = Math.min(...spacing);
-            const longest = Math.max(...spacing);
-            assert.ok(longest - shortest < 0.5,
-                `${count}-handed gaps ran ${shortest.toFixed(1)}-${longest.toFixed(1)}px`);
-        });
-    });
-
-    test("asked for no seats, offers no positions", () => {
-        assert.deepEqual(Render.ringAngles(0, 44, 42, 1), []);
-    });
-
-    test("puts each bet between its own player and the pot", () => {
-        // Where a dealer pushes the chips: on that player's line to the middle, short
-        // of the seat.
-        const bearing = (point) => Math.atan2(point.top - 50, point.left - 50);
-        const outFromMiddle = (point) => Math.hypot(point.left - 50, point.top - 50);
-
-        [[601, 126], [810, 583], [351, 351]].forEach(([w, h]) => {
-            for (let seat = 0; seat < 9; seat++) {
-                const player = Render.seatPosition(seat, 9, w / h);
-                const bet = Render.betPosition(seat, 9, w / h);
-                const offBy = Math.abs(bearing(bet) - bearing(player)) * (180 / Math.PI);
-                assert.ok(offBy < 1, `${w}x${h} seat ${seat + 1} is ${offBy.toFixed(1)}° off its spoke`);
-                assert.ok(outFromMiddle(bet) < outFromMiddle(player), `${w}x${h} seat ${seat + 1} is short of the seat`);
-            }
-        });
-    });
-});

tests/holdem/seatingTheTable.test.js

@@ -1,181 +0,0 @@
-// Sitting people down, which is the first thing anybody does with the tool.
-//
-// Naming a chair and dealing that chair in were two separate acts and the second was
-// easy to miss. A dealer setting up typed six names, got six seats that still weren't
-// in the hand, and the action bar hid itself because by its reckoning nobody was
-// playing: six people at the table and a blank screen with no way forward.
-const test = require("node:test");
-const { describe } = require("node:test");
-const assert = require("node:assert");
-const { HoldemState, Betting, ActionBar, makeTable } = require("./load");
-
-const emptyTable = (seatCount = 10) => {
-    const state = HoldemState.createDefault();
-    HoldemState.resizeSeats(state, seatCount);
-    return state;
-};
-
-const bar = state => Object.assign(Object.create(ActionBar), { state });
-
-describe("the bar knows the difference between an empty table and a named one", () => {
-    test("a table nobody has touched gets no bar", () => {
-        assert.equal(bar(emptyTable()).isRunning(), false, "an empty felt stays uncluttered");
-    });
-
-    test("a table with names on it gets one, dealt in or not", () => {
-        const state = emptyTable();
-        state.seats[0].name = "Ann";
-        state.seats[1].name = "Ben";
-
-        assert.equal(Betting.liveSeats(state).length, 0, "nobody is in the hand");
-        assert.equal(bar(state).isRunning(), true, "but there are people at the table to say something to");
-    });
-
-    test("whitespace isn't a player", () => {
-        const state = emptyTable();
-        state.seats[0].name = "   ";
-        assert.equal(bar(state).isRunning(), false);
-    });
-
-    test("a table that is playing still gets one", () => {
-        assert.equal(bar(makeTable({ seatCount: 6, seated: [0, 1] })).isRunning(), true);
-    });
-});
-
-describe("naming an empty chair sits somebody down", () => {
-    // What the seat editor's name field does, as the rule it applies rather than
-    // through the DOM: a chair with no name and nobody in it is empty, and putting a
-    // name on it is somebody arriving.
-    const nameSeat = (player, name) => {
-        const wasEmpty = !player.name.trim() && !player.inHand;
-        player.name = name;
-        if (wasEmpty && player.name.trim()) { player.inHand = true; player.folded = false; }
-    };
-
-    test("an empty chair gets dealt in", () => {
-        const state = emptyTable();
-        nameSeat(state.seats[0], "Ann");
-        assert.equal(state.seats[0].inHand, true);
-        assert.equal(state.seats[0].folded, false);
-    });
-
-    test("six names is six players, not six benched seats", () => {
-        const state = emptyTable();
-        state.defaultStack = 200;    // a table that has told the tool what a buy-in is
-        ["Ann", "Ben", "Cal", "Dee", "Eve", "Fay"].forEach((name, i) => nameSeat(state.seats[i], name));
-
-        assert.equal(state.seats.filter(p => p.inHand).length, 6);
-        assert.equal(bar(state).isRunning(), true);
-        assert.ok(Betting.blindPreview(state), "and there's a hand to deal");
-    });
-
-    test("renaming somebody who is sitting out doesn't deal them back in", () => {
-        // A correction, not an arrival. Dealing them in over a typo would be the tool
-        // overruling a dealer who sat them out on purpose.
-        const state = emptyTable();
-        state.seats[0].name = "Ann";
-        state.seats[0].inHand = false;
-
-        nameSeat(state.seats[0], "Anne");
-        assert.equal(state.seats[0].inHand, false, "still sitting out, now spelled right");
-    });
-
-    test("clearing a name doesn't sit anybody down", () => {
-        const state = emptyTable();
-        nameSeat(state.seats[0], "Ann");
-        nameSeat(state.seats[0], "");
-        assert.equal(state.seats[0].name, "");
-    });
-
-    test("a chair already in the hand is left alone", () => {
-        const state = makeTable({ seatCount: 6, seated: [0] });
-        state.seats[0].folded = true;
-        nameSeat(state.seats[0], "Ann");
-        assert.equal(state.seats[0].folded, true, "mid-hand a fold is not undone by typing");
-    });
-});
-
-describe("the way back from a table where everybody is sat out", () => {
-    test("there are named seats to offer", () => {
-        // Can't be reached by naming any more, but a table where everyone was sat out
-        // — or a save from before naming seated people — still lands here.
-        const state = emptyTable();
-        ["Ann", "Ben", "Cal"].forEach((name, i) => { state.seats[i].name = name; });
-
-        const benched = state.seats
-            .map((player, index) => ({ player, index }))
-            .filter(({ player }) => (player.name || "").trim() && !player.inHand)
-            .map(({ index }) => index);
-
-        assert.deepEqual(benched, [0, 1, 2]);
-        assert.equal(Betting.blindPreview(state), null, "no hand to deal until they're in");
-    });
-
-    test("dealing them all in makes a hand possible", () => {
-        const state = emptyTable();
-        ["Ann", "Ben", "Cal"].forEach((name, i) => { state.seats[i].name = name; state.seats[i].stack = 100; });
-
-        state.seats.forEach(player => {
-            if ((player.name || "").trim()) { player.inHand = true; player.folded = false; }
-        });
-
-        assert.equal(Betting.liveSeats(state).length, 3);
-        assert.ok(Betting.blindPreview(state), "the table can be dealt");
-    });
-
-    test("an unnamed chair is never swept in by it", () => {
-        const state = emptyTable();
-        state.seats[0].name = "Ann";
-        state.seats.forEach(player => {
-            if ((player.name || "").trim()) { player.inHand = true; }
-        });
-        assert.equal(state.seats.filter(p => p.inHand).length, 1, "empty chairs stay empty");
-    });
-});
-
-describe("a table where nobody has bought in", () => {
-    // Different from a table that has busted out, and the difference is the whole
-    // point: one needs a starting stack named, the other needs a rebuy. Telling a
-    // dealer their brand-new players have "no chips left" sends them hunting for the
-    // wrong thing.
-    const neverBoughtIn = state => state.seats.every(p =>
-        !(Number(p.buyIns) > 0) && !(Number(p.stack) > 0));
-
-    test("six freshly named players have never bought in", () => {
-        const state = emptyTable();
-        ["Ann", "Ben", "Cal", "Dee", "Eve", "Fay"].forEach((name, i) => {
-            state.seats[i].name = name;
-            state.seats[i].inHand = true;
-        });
-
-        assert.equal(neverBoughtIn(state), true);
-        assert.equal(Betting.blindPreview(state), null, "and there is no hand to deal");
-    });
-
-    test("a table that has busted out is not the same thing", () => {
-        const state = makeTable({ seatCount: 6, seated: [0, 1], stack: 200 });
-        state.seats.forEach(p => { p.buyIns = 200; p.stack = 0; });
-
-        assert.equal(neverBoughtIn(state), false, "they had chips — they lost them");
-    });
-
-    test("one player still holding chips is not a never-bought-in table either", () => {
-        const state = emptyTable();
-        ["Ann", "Ben"].forEach((name, i) => { state.seats[i].name = name; state.seats[i].inHand = true; });
-        state.seats[0].stack = 50;
-
-        assert.equal(neverBoughtIn(state), false);
-    });
-
-    test("naming a starting stack is enough to deal", () => {
-        // The one field the message now points at. A seat with no stack of its own
-        // falls back to the table default, so setting it seats everybody's chips at
-        // once — which is why it's the right thing to send the dealer to.
-        const state = emptyTable();
-        ["Ann", "Ben", "Cal"].forEach((name, i) => { state.seats[i].name = name; state.seats[i].inHand = true; });
-        assert.equal(Betting.blindPreview(state), null);
-
-        state.defaultStack = 200;
-        assert.ok(Betting.blindPreview(state), "one number and the table can play");
-    });
-});

tests/holdem/selectsOnFocus.test.js

@@ -1,53 +0,0 @@
-// Which fields replace their contents when a dealer reaches for them.
-const test = require("node:test");
-const assert = require("node:assert");
-const { Money } = require("./load");
-
-// Enough of an input to answer the question, without a DOM.
-const field = (props = {}) => ({ tagName: "INPUT", type: "text", inputMode: "", ...props });
-
-test("a number box selects", () => {
-    assert.equal(Money.selectsOnFocus(field({ type: "number" })), true);
-});
-
-test("a decimal keypad box selects", () => {
-    // The raise pad's amount is type=text with inputmode=decimal, so the phone shows
-    // a number pad without the browser's spinner arrows.
-    assert.equal(Money.selectsOnFocus(field({ type: "text", inputMode: "decimal" })), true);
-});
-
-test("a name does not", () => {
-    // Selecting all of a name on focus is the same mistake pointing the other way:
-    // a name is a thing you edit, not a suggestion you replace.
-    assert.equal(Money.selectsOnFocus(field({ type: "text" })), false);
-});
-
-test("a colour swatch does not", () => {
-    assert.equal(Money.selectsOnFocus(field({ type: "color" })), false);
-});
-
-test("a checkbox does not", () => {
-    assert.equal(Money.selectsOnFocus(field({ type: "checkbox" })), false);
-});
-
-test("a textarea does not, whatever it is asked", () => {
-    assert.equal(Money.selectsOnFocus({ tagName: "TEXTAREA", type: "text", inputMode: "decimal" }), false);
-});
-
-test("a select does not", () => {
-    assert.equal(Money.selectsOnFocus({ tagName: "SELECT", type: "select-one" }), false);
-});
-
-test("case doesn't matter", () => {
-    assert.equal(Money.selectsOnFocus(field({ type: "NUMBER" })), true);
-    assert.equal(Money.selectsOnFocus(field({ type: "TEXT", inputMode: "DECIMAL" })), true);
-});
-
-test("nothing at all is not a field", () => {
-    assert.equal(Money.selectsOnFocus(null), false);
-    assert.equal(Money.selectsOnFocus(undefined), false);
-});
-
-test("a field with no type stated is a text box, so it does not", () => {
-    assert.equal(Money.selectsOnFocus({ tagName: "INPUT" }), false);
-});

tests/holdem/settleUp.test.js

@@ -1,124 +0,0 @@
-// Turning the standings into "who hands cash to whom".
-const test = require("node:test");
-const assert = require("node:assert");
-const { Money, HoldemState, SettleUp, makeTable } = require("./load");
-
-const standings = pairs => pairs.map(([name, cashPosition]) => ({ name, cashPosition }));
-const lines = plan => plan.payments.map(p => `${p.from} -> ${p.to} ${Money.format(p.amount)}`);
-const paidTo = (plan, name) =>
-    plan.payments.filter(p => p.to === name).reduce((sum, p) => sum + p.amount, 0);
-const paidBy = (plan, name) =>
-    plan.payments.filter(p => p.from === name).reduce((sum, p) => sum + p.amount, 0);
-
-test("one loser, one winner", () => {
-    const plan = SettleUp.plan(standings([["Ann", 40], ["Ben", -40]]));
-    assert.deepEqual(lines(plan), ["Ben -> Ann $40"]);
-    assert.equal(plan.balanced, true);
-});
-
-test("everybody flat means nothing to do", () => {
-    const plan = SettleUp.plan(standings([["Ann", 0], ["Ben", 0]]));
-    assert.deepEqual(plan.payments, []);
-    assert.equal(plan.balanced, true);
-});
-
-test("nobody at all means nothing to do", () => {
-    const plan = SettleUp.plan([]);
-    assert.deepEqual(plan.payments, []);
-    assert.equal(plan.balanced, true);
-});
-
-test("each player ends up square", () => {
-    const table = standings([
-        ["Ann", 120], ["Ben", -75], ["Cal", -60], ["Dee", 30], ["Eve", -15],
-    ]);
-    const plan = SettleUp.plan(table);
-
-    table.forEach(row => {
-        const settled = paidTo(plan, row.name) - paidBy(plan, row.name);
-        assert.equal(settled, row.cashPosition, `${row.name} should end up square`);
-    });
-    assert.equal(plan.balanced, true);
-});
-
-test("at most one payment fewer than there are people", () => {
-    const table = standings([
-        ["Ann", 120], ["Ben", -75], ["Cal", -60], ["Dee", 30], ["Eve", -15],
-    ]);
-    const plan = SettleUp.plan(table);
-    assert.ok(plan.payments.length <= table.length - 1,
-        `${plan.payments.length} payments for ${table.length} players`);
-});
-
-test("a player who owes two people has both lines together", () => {
-    // The list gets read out one player at a time, so a payer's obligations must not
-    // be split up by somebody else's.
-    const plan = SettleUp.plan(standings([["Ann", 50], ["Cal", 30], ["Ben", -80]]));
-    assert.deepEqual(lines(plan), ["Ben -> Ann $50", "Ben -> Cal $30"]);
-});
-
-test("cents survive", () => {
-    const plan = SettleUp.plan(standings([["Ann", 0.1], ["Ben", 0.2], ["Cal", -0.3]]));
-    assert.deepEqual(lines(plan), ["Cal -> Ben $0.20", "Cal -> Ann $0.10"]);
-    assert.equal(plan.balanced, true);
-});
-
-test("more chips than cash leaves somebody unpaid, and says so", () => {
-    // The table is $25 up on the bank — an unrecorded rebuy or a miscount. The winners
-    // cannot all be paid, and pretending otherwise is how a real person ends up short.
-    const plan = SettleUp.plan(standings([["Ann", 100], ["Ben", -75]]));
-    assert.deepEqual(lines(plan), ["Ben -> Ann $75"]);
-    assert.equal(plan.shortBy, 25);
-    assert.equal(plan.overBy, 0);
-    assert.equal(plan.balanced, false);
-});
-
-test("less chips than cash leaves a payer with nowhere to send it", () => {
-    const plan = SettleUp.plan(standings([["Ann", 50], ["Ben", -75]]));
-    assert.deepEqual(lines(plan), ["Ben -> Ann $50"]);
-    assert.equal(plan.overBy, 25);
-    assert.equal(plan.shortBy, 0);
-    assert.equal(plan.balanced, false);
-});
-
-test("no payment is ever for nothing", () => {
-    const plan = SettleUp.plan(standings([
-        ["Ann", 60], ["Ben", -60], ["Cal", 0], ["Dee", 0],
-    ]));
-    assert.ok(plan.payments.every(p => p.amount > 0));
-    assert.equal(plan.payments.length, 1);
-});
-
-test("nobody pays themselves", () => {
-    const plan = SettleUp.plan(standings([
-        ["Ann", 90], ["Ben", -30], ["Cal", -30], ["Dee", -30],
-    ]));
-    assert.ok(plan.payments.every(p => p.from !== p.to));
-});
-
-test("the payments total what the winners are owed", () => {
-    const table = standings([["Ann", 42.5], ["Ben", 17.5], ["Cal", -60]]);
-    const plan = SettleUp.plan(table);
-    const moved = plan.payments.reduce((sum, p) => sum + p.amount, 0);
-    assert.equal(Money.round(moved), 60);
-});
-
-test("it settles a real table's standings, not just hand-made numbers", () => {
-    const state = makeTable({ seatCount: 6, seated: [0, 1, 2], stack: 100 });
-    state.seats[0].buyIns = 100;
-    state.seats[1].buyIns = 100;
-    state.seats[2].buyIns = 100;
-    state.seats[0].stack = 175;
-    state.seats[1].stack = 90;
-    state.seats[2].stack = 35;
-
-    const rows = HoldemState.sessionStandings(state);
-    const plan = SettleUp.plan(rows);
-
-    // Bank balances — 300 in, 300 on the table — so everyone can be paid.
-    assert.equal(HoldemState.bankReconciliation(state).balanced, true);
-    assert.equal(plan.balanced, true);
-    rows.forEach(row => {
-        assert.equal(paidTo(plan, row.name) - paidBy(plan, row.name), row.cashPosition);
-    });
-});

tests/holdem/shortcutLegend.test.js

@@ -1,51 +0,0 @@
-// The legend and the key map must not drift apart.
-//
-// F, C and R are printed on the buttons they drive. A and U were on nothing at all,
-// so a dealer who learned the first three from the action bar had no way to find out
-// the other two existed. The guard against that happening again is this file.
-const test = require("node:test");
-const assert = require("node:assert");
-const path = require("path");
-
-const Shortcuts = require(path.join(
-    __dirname, "..", "..", "JoshHeaps.Net", "wwwroot", "js", "casino", "holdem", "shortcuts.js"));
-
-test("every shortcut has a line in the legend", () => {
-    const documented = new Set(Shortcuts.LEGEND.map(entry => entry.action));
-    const missing = [...new Set(Object.values(Shortcuts.KEYS))].filter(action => !documented.has(action));
-    assert.deepEqual(missing, [], "a shortcut with no legend line is one nobody can find");
-});
-
-test("the legend doesn't describe shortcuts that don't exist", () => {
-    const real = new Set(Object.values(Shortcuts.KEYS));
-    const invented = Shortcuts.LEGEND.map(entry => entry.action).filter(action => !real.has(action));
-    assert.deepEqual(invented, []);
-});
-
-test("every legend line names its keys and says what they do", () => {
-    Shortcuts.LEGEND.forEach(entry => {
-        assert.ok(Array.isArray(entry.keys) && entry.keys.length > 0, `${entry.action} has no keys`);
-        assert.ok(entry.keys.every(key => typeof key === "string" && key.trim()), `${entry.action} has a blank key`);
-        assert.ok(entry.what && entry.what.trim().length > 3, `${entry.action} has no description`);
-    });
-});
-
-test("the keys named match the keys bound", () => {
-    // "Space" and "Enter" both drive advance; the map holds them as " " and "enter".
-    const spoken = { space: " ", enter: "enter", esc: "escape" };
-    Shortcuts.LEGEND.forEach(entry => {
-        entry.keys.forEach(label => {
-            const key = spoken[label.toLowerCase()] || label.toLowerCase();
-            assert.equal(Shortcuts.KEYS[key], entry.action,
-                `the legend says ${label} is ${entry.action}, the map disagrees`);
-        });
-    });
-});
-
-test("no two lines claim the same key", () => {
-    const seen = new Set();
-    Shortcuts.LEGEND.forEach(entry => entry.keys.forEach(key => {
-        assert.ok(!seen.has(key.toLowerCase()), `${key} is listed twice`);
-        seen.add(key.toLowerCase());
-    }));
-});

tests/holdem/shortcuts.test.js

@@ -1,110 +0,0 @@
-// The keyboard shortcuts, and the one rule that keeps them from stealing a press.
-//
-// Shortcuts talks to `document` directly, so these tests stand a small fake one up
-// rather than a whole DOM: the only things it asks about are what has focus and
-// whether an overlay is open.
-const test = require("node:test");
-const assert = require("node:assert");
-const path = require("path");
-
-const Shortcuts = require(path.join(
-    __dirname, "..", "..", "JoshHeaps.Net", "wwwroot", "js", "casino", "holdem", "shortcuts.js"));
-
-// A stand-in for a focused element. `matches` answers the same selector list the
-// real one would, which is the whole of what focusedControlOwnsKey looks at.
-function element(tagName, { selectors = [], isContentEditable = false } = {}) {
-    return {
-        tagName,
-        isContentEditable,
-        matches: selector => selectors.some(s => selector.includes(s)),
-    };
-}
-
-const BUTTON = element("BUTTON", { selectors: ["button"] });
-const SUMMARY = element("SUMMARY", { selectors: ["summary"] });
-const LINK = element("A", { selectors: ["a[href]"] });
-const DIV = element("DIV");
-const TEXT_FIELD = element("INPUT");
-
-// Runs one keypress against a fresh Shortcuts and reports which action fired.
-function press(key, { focused = DIV, overlays = [] } = {}) {
-    const fired = [];
-    let defaultPrevented = false;
-
-    globalThis.document = {
-        activeElement: focused,
-        addEventListener() {},
-        querySelectorAll: () => overlays,
-    };
-
-    const handlers = {};
-    for (const action of Object.values(Shortcuts.KEYS)) {
-        handlers[action] = () => { fired.push(action); return true; };
-    }
-    Shortcuts.handlers = handlers;
-    Shortcuts.onKey({ key, preventDefault: () => { defaultPrevented = true; } });
-
-    return { fired: fired[0] || null, defaultPrevented };
-}
-
-test.after(() => { delete globalThis.document; });
-
-test("Enter on a focused button is left to the button", () => {
-    assert.equal(press("Enter", { focused: BUTTON }).fired, null);
-});
-
-test("Space on a focused button is left to the button", () => {
-    assert.equal(press(" ", { focused: BUTTON }).fired, null);
-});
-
-test("a key left to the control is not swallowed either", () => {
-    // preventDefault would stop the browser activating the button, which is the
-    // half of the bug that turned "wrong action" into "no action".
-    assert.equal(press("Enter", { focused: BUTTON }).defaultPrevented, false);
-});
-
-test("summary and links own Enter and Space too", () => {
-    assert.equal(press("Enter", { focused: SUMMARY }).fired, null);
-    assert.equal(press(" ", { focused: LINK }).fired, null);
-});
-
-test("Space still advances when nothing pressable has focus", () => {
-    assert.equal(press(" ", { focused: DIV }).fired, "advance");
-});
-
-test("Enter still advances when nothing pressable has focus", () => {
-    assert.equal(press("Enter", { focused: DIV }).fired, "advance");
-});
-
-test("the letter shortcuts stay live with a button focused", () => {
-    // A button does nothing with "f", so there is no press to hand back — and a
-    // dealer whose hand is on the keys shouldn't lose them to a stray focus ring.
-    assert.equal(press("f", { focused: BUTTON }).fired, "fold");
-    assert.equal(press("c", { focused: BUTTON }).fired, "checkOrCall");
-    assert.equal(press("r", { focused: BUTTON }).fired, "raise");
-    assert.equal(press("a", { focused: BUTTON }).fired, "allIn");
-    assert.equal(press("u", { focused: BUTTON }).fired, "undo");
-});
-
-test("typing still silences everything but Escape", () => {
-    assert.equal(press("f", { focused: TEXT_FIELD }).fired, null);
-    assert.equal(press("Escape", { focused: TEXT_FIELD }).fired, "cancel");
-});
-
-test("an open overlay still owns the keyboard", () => {
-    assert.equal(press("f", { focused: DIV, overlays: [{ hidden: false }] }).fired, null);
-    assert.equal(press("f", { focused: DIV, overlays: [{ hidden: true }] }).fired, "fold");
-});
-
-test("a focused control wins before the overlay check, not after", () => {
-    // Both would decline here; the point is that neither path fires an action.
-    assert.equal(press("Enter", { focused: BUTTON, overlays: [{ hidden: false }] }).fired, null);
-});
-
-test("modified keys are never shortcuts", () => {
-    globalThis.document = { activeElement: DIV, addEventListener() {}, querySelectorAll: () => [] };
-    const fired = [];
-    Shortcuts.handlers = { advance: () => { fired.push("advance"); return true; } };
-    Shortcuts.onKey({ key: " ", ctrlKey: true, preventDefault() {} });
-    assert.deepEqual(fired, []);
-});

tests/holdem/showdownOrder.test.js

@@ -1,202 +0,0 @@
-// Who turns their hand over first.
-//
-// A call the dealer makes at every showdown that isn't a fold, and one nobody at the
-// table volunteers for — everyone would rather see a hand than show one. The tool knew
-// who last raised and who sits left of the button and said neither.
-const test = require("node:test");
-const { describe } = require("node:test");
-const assert = require("node:assert");
-const { HoldemState, Betting, makeTable } = require("./load");
-
-const NAMES = ["Ann", "Ben", "Cal", "Dee"];
-const table = (dealerSeatIndex = 0, stack = 200) => {
-    const state = makeTable({ seatCount: 6, seated: [0, 1, 2, 3], stack, dealerSeatIndex });
-    NAMES.forEach((name, i) => { state.seats[i].name = name; });
-    Betting.beginHand(state);
-    return state;
-};
-
-const call = state => {
-    const answer = Betting.showdownOrder(state);
-    return answer && { who: state.seats[answer.index].name, reason: answer.reason };
-};
-
-// Everybody left just calls whatever is in front of them, then the street closes.
-const checkRound = state => {
-    let guard = 0;
-    while (state.actingSeatIndex !== null && guard++ < 12) {
-        const index = state.actingSeatIndex;
-        if (Betting.toCall(state, state.seats[index]) > 0) Betting.call(state, index);
-        else Betting.check(state, index);
-    }
-    Betting.closeStreet(state);
-};
-
-describe("a bet on the river", () => {
-    test("the last player to raise shows first", () => {
-        const state = table(0);                 // blinds Ben and Cal
-        checkRound(state);                      // pre-flop
-        checkRound(state);                      // flop
-        checkRound(state);                      // turn
-
-        Betting.raiseTo(state, state.actingSeatIndex, 20);
-        const raiser = state.seats.findIndex(p => Betting.committed(p) === 20);
-        while (state.actingSeatIndex !== null) Betting.call(state, state.actingSeatIndex);
-
-        assert.deepEqual(call(state), { who: state.seats[raiser].name, reason: "aggressor" });
-    });
-
-    test("a re-raise moves it to the last one, not the first", () => {
-        const state = table(0);
-        checkRound(state); checkRound(state); checkRound(state);
-
-        const first = state.actingSeatIndex;
-        Betting.raiseTo(state, first, 20);
-        const second = state.actingSeatIndex;
-        Betting.raiseTo(state, second, 60);
-        while (state.actingSeatIndex !== null) {
-            const i = state.actingSeatIndex;
-            if (Betting.toCall(state, state.seats[i]) > 0) Betting.call(state, i); else Betting.check(state, i);
-        }
-
-        assert.equal(call(state).who, state.seats[second].name);
-    });
-
-    test("a short all-in still shows first, even though it doesn't reopen the betting", () => {
-        // The rule about reopening is about who may raise. It says nothing about who
-        // shows, and the player who shoved is still the last one who put money in.
-        const state = table(0);
-        checkRound(state); checkRound(state); checkRound(state);
-
-        const bettor = state.actingSeatIndex;
-        Betting.raiseTo(state, bettor, 40);
-        const shortStack = state.actingSeatIndex;
-        // Over the $40 but only by $15, where a full raise would need $40 more. Going
-        // *under* the bet would be a short call, not a short raise, and wouldn't make
-        // them the aggressor at all.
-        state.seats[shortStack].stack = 55;
-        Betting.allIn(state, shortStack);
-        assert.equal(Betting.committed(state.seats[shortStack]), 55, "raised, if not by enough");
-        while (state.actingSeatIndex !== null) {
-            const i = state.actingSeatIndex;
-            if (Betting.toCall(state, state.seats[i]) > 0) Betting.call(state, i); else Betting.check(state, i);
-        }
-
-        assert.equal(call(state).who, state.seats[shortStack].name);
-    });
-});
-
-describe("a river checked through", () => {
-    test("the first live player left of the button shows first", () => {
-        const state = table(0);                 // button Ann
-        checkRound(state); checkRound(state); checkRound(state); checkRound(state);
-
-        assert.deepEqual(call(state), { who: "Ben", reason: "leftOfButton" });
-    });
-
-    test("an earlier street's raiser doesn't carry over to the river", () => {
-        // The rule is about the *final* round. Leading the flop and then checking the
-        // river doesn't oblige anyone.
-        const state = table(0);
-        checkRound(state);                      // pre-flop
-        Betting.raiseTo(state, state.actingSeatIndex, 20);   // leads the flop
-        while (state.actingSeatIndex !== null) Betting.call(state, state.actingSeatIndex);
-        Betting.closeStreet(state);
-        checkRound(state);                      // turn
-        checkRound(state);                      // river
-
-        assert.equal(call(state).reason, "leftOfButton");
-    });
-
-    test("it skips a folded seat rather than naming somebody who isn't in the hand", () => {
-        const state = table(0);                 // button Ann, so Ben would be first
-        checkRound(state); checkRound(state); checkRound(state);
-        Betting.fold(state, 1);                 // Ben gets out on the river
-        while (state.actingSeatIndex !== null) {
-            const i = state.actingSeatIndex;
-            if (Betting.toCall(state, state.seats[i]) > 0) Betting.call(state, i); else Betting.check(state, i);
-        }
-        Betting.closeStreet(state);
-
-        assert.equal(call(state).who, "Cal", "the next one round who is still in");
-    });
-});
-
-describe("everyone all-in before the river", () => {
-    test("the last player who could put money in shows first", () => {
-        // There was no final round to lead, so "checked round" isn't a choice anybody
-        // made and the seat left of the button hasn't earned the obligation.
-        const state = table(0, 30);
-        checkRound(state);                      // pre-flop
-
-        const shover = state.actingSeatIndex;
-        Betting.allIn(state, shover);
-        while (state.actingSeatIndex !== null) Betting.call(state, state.actingSeatIndex);
-        Betting.closeStreet(state);
-
-        assert.equal(Betting.canStillBet(state), false, "nobody has chips left to bet");
-        assert.deepEqual(call(state), { who: state.seats[shover].name, reason: "allInAggressor" });
-    });
-
-    test("a hand where everyone got in for the blind and nobody raised falls to the button", () => {
-        // Two-dollar stacks against a two-dollar blind: everyone is all-in by calling,
-        // and calling is not aggression. Nobody chose to lead, so nobody is on the hook
-        // and it goes back to the seat left of the button.
-        const state = table(0, 2);
-        checkRound(state);
-
-        assert.equal(Betting.canStillBet(state), false, "nobody has a chip behind");
-        assert.equal(state.handAggressorIndex, null, "and nobody ever raised");
-        const answer = call(state);
-        assert.ok(answer, "there is still a showdown to order");
-        assert.equal(answer.reason, "leftOfButton");
-    });
-});
-
-describe("when there is nothing to call", () => {
-    test("one player left isn't a showdown", () => {
-        const state = table(0);
-        [1, 2, 3].forEach(i => Betting.fold(state, i));
-        assert.equal(Betting.showdownOrder(state), null);
-    });
-
-    test("an aggressor who has since folded doesn't get named", () => {
-        // Can't happen in play — you don't fold after raising unopposed — but the
-        // index is a number on the state and a reset table could hold a stale one.
-        const state = table(0);
-        checkRound(state); checkRound(state); checkRound(state); checkRound(state);
-        state.streetAggressorIndex = 1;
-        state.seats[1].folded = true;
-
-        const answer = call(state);
-        assert.notEqual(answer.who, "Ben");
-        assert.equal(answer.reason, "leftOfButton");
-    });
-
-    test("an index pointing at no seat at all is ignored", () => {
-        const state = table(0);
-        checkRound(state); checkRound(state); checkRound(state); checkRound(state);
-        state.streetAggressorIndex = 99;
-        assert.equal(call(state).reason, "leftOfButton");
-    });
-});
-
-describe("the tracking resets when it should", () => {
-    test("a new hand starts with nobody on the hook", () => {
-        const state = table(0);
-        checkRound(state); checkRound(state); checkRound(state);
-        Betting.raiseTo(state, state.actingSeatIndex, 20);
-        assert.notEqual(state.handAggressorIndex, null);
-
-        HoldemState.startNextHand(state);
-        Betting.beginHand(state);
-        assert.equal(state.streetAggressorIndex, null);
-        assert.equal(state.handAggressorIndex, null, "last night's raise isn't this hand's business");
-    });
-
-    test("posting a blind is not aggression", () => {
-        const state = table(0);
-        assert.equal(state.streetAggressorIndex, null);
-        assert.equal(state.handAggressorIndex, null);
-    });
-});

tests/holdem/splitCalculator.test.js

@@ -1,65 +0,0 @@
-const { test, describe } = require("node:test");
-const assert = require("node:assert/strict");
-const { SplitCalculator, Money } = require("./load");
-
-describe("SplitCalculator.split", () => {
-    test("an even chop hands everyone the same stack", () => {
-        const result = SplitCalculator.split(90, 3, 1);
-        assert.equal(result.each, 30);
-        assert.equal(result.oddChips, 0);
-        assert.equal(result.dust, 0);
-        assert.equal(SplitCalculator.accountedFor(result), 90);
-    });
-
-    test("what won't divide is called out as odd chips, not rolled into a stack", () => {
-        // $100 three ways in $5 chips: 20 chips, 6 each, 2 left over.
-        const result = SplitCalculator.split(100, 3, 5);
-        assert.equal(result.each, 30);
-        assert.equal(result.oddChips, 2);
-        assert.equal(SplitCalculator.accountedFor(result), 100);
-    });
-
-    test("a pot that isn't a whole number of chips surfaces the remainder", () => {
-        // $47 in $5 chips: 9 chips ($45) and $2 that no chip in play can pay.
-        const result = SplitCalculator.split(47, 2, 5);
-        assert.equal(result.dust, 2, "the dealer picked a denomination the pot can't make");
-        assert.equal(SplitCalculator.accountedFor(result), 47);
-    });
-
-    test("every split accounts for the whole pot", () => {
-        const chips = [0.25, 0.5, 1, 5, 25, 100];
-        for (let pot = 1; pot <= 400; pot += 7) {
-            for (let ways = 2; ways <= 6; ways++) {
-                chips.forEach(chip => {
-                    const result = SplitCalculator.split(pot, ways, chip);
-                    assert.equal(
-                        Money.toCents(SplitCalculator.accountedFor(result)),
-                        Money.toCents(pot),
-                        `${pot} split ${ways} ways in ${chip} chips lost money`
-                    );
-                });
-            }
-        }
-    });
-
-    test("odd chips are always fewer than the number of players", () => {
-        for (let pot = 1; pot <= 200; pot += 3) {
-            for (let ways = 2; ways <= 8; ways++) {
-                const result = SplitCalculator.split(pot, ways, 1);
-                assert.ok(result.oddChips < ways, "a whole extra chip each would have been dealt out");
-            }
-        }
-    });
-
-    test("an empty pot isn't a valid split", () => {
-        assert.equal(SplitCalculator.split(0, 3, 1).valid, false);
-        assert.equal(SplitCalculator.split(-5, 3, 1).valid, false);
-    });
-
-    test("nonsense inputs fall back to something a dealer can read", () => {
-        const result = SplitCalculator.split(50, 0, 0);
-        assert.equal(result.players, 1, "a split has to be at least one way");
-        assert.equal(result.chip, 0.01, "and at least one cent a chip");
-        assert.equal(SplitCalculator.accountedFor(result), 50);
-    });
-});

tests/holdem/startingStackMoney.test.js

@@ -1,166 +0,0 @@
-// The chips the felt plays with are the chips the box is checked against.
-//
-// "Starting stack" is offered in the setup panel as the ordinary way to open a table —
-// "seats without their own stack start here" — and everything a dealer looks at reads
-// it: the puck, the action bar, what a player is allowed to bet. The money side did
-// not. It read `seat.stack` directly, which is null for exactly those seats, so a
-// three-handed table playing for $600 reported no chips in play, a balanced bank and a
-// standings list with nobody on it.
-const test = require("node:test");
-const { describe } = require("node:test");
-const assert = require("node:assert");
-const { Money, HoldemState, Betting } = require("./load");
-
-const openedWithStartingStack = (stack = 200, names = ["Ann", "Ben", "Cal"]) => {
-    const state = HoldemState.createDefault();
-    HoldemState.resizeSeats(state, 6);
-    state.defaultStack = stack;
-    names.forEach((name, i) => {
-        state.seats[i].name = name;
-        state.seats[i].inHand = true;
-    });
-    return state;
-};
-
-describe("what the table is playing for", () => {
-    test("is what the bank counts", () => {
-        const state = openedWithStartingStack();
-        // What the felt says each of them has.
-        assert.deepEqual(state.seats.slice(0, 3).map(p => Betting.stackOf(state, p)), [200, 200, 200]);
-        assert.equal(HoldemState.bankReconciliation(state).chipsInPlay, 600);
-    });
-
-    test("and the box being empty is a problem it now reports", () => {
-        const bank = HoldemState.bankReconciliation(openedWithStartingStack());
-        assert.equal(bank.cashIn, 0);
-        assert.equal(bank.difference, 600);
-        assert.equal(bank.balanced, false, "six hundred dollars of chips nobody paid for");
-    });
-
-    test("empty chairs are not people holding two hundred dollars", () => {
-        // The starting stack stands in for a seat that hasn't been given one, and every
-        // empty chair is such a seat. Counting them would invent $600 of chips at an
-        // empty table.
-        const state = openedWithStartingStack();
-        assert.equal(HoldemState.bankReconciliation(state).chipsInPlay, 600, "three players, not six chairs");
-
-        const empty = HoldemState.createDefault();
-        empty.defaultStack = 200;
-        assert.equal(HoldemState.bankReconciliation(empty).chipsInPlay, 0);
-        assert.equal(HoldemState.bankReconciliation(empty).balanced, true);
-    });
-
-    test("once the cash is written down it balances", () => {
-        const state = openedWithStartingStack();
-        state.seats.slice(0, 3).forEach(p => { p.buyIns = 200; });
-        assert.equal(HoldemState.bankReconciliation(state).balanced, true);
-    });
-
-    test("a table where everyone has their own stack is unchanged", () => {
-        const state = HoldemState.createDefault();
-        HoldemState.resizeSeats(state, 4);
-        ["Ann", "Ben"].forEach((name, i) => {
-            state.seats[i].name = name;
-            state.seats[i].stack = 150;
-            state.seats[i].buyIns = 150;
-        });
-        const bank = HoldemState.bankReconciliation(state);
-        assert.equal(bank.chipsInPlay, 300);
-        assert.equal(bank.balanced, true);
-    });
-});
-
-describe("who is on the settle-up list", () => {
-    test("everyone holding chips, including the ones holding the table's own stack", () => {
-        const rows = HoldemState.sessionStandings(openedWithStartingStack());
-        assert.deepEqual(rows.map(r => r.name), ["Ann", "Ben", "Cal"]);
-        assert.deepEqual(rows.map(r => r.chipsInFront), [200, 200, 200]);
-    });
-
-    test("with nothing bought in yet, which is the thing to notice", () => {
-        const rows = HoldemState.sessionStandings(openedWithStartingStack());
-        assert.deepEqual(rows.map(r => r.boughtIn), [0, 0, 0]);
-        assert.deepEqual(rows.map(r => r.cashPosition), [200, 200, 200]);
-    });
-});
-
-describe("naming the seats the cash is missing for", () => {
-    test("says who, and which kind of missing it is", () => {
-        const state = openedWithStartingStack();
-        state.seats[2].stack = 320;      // Cal typed his own: an unrecorded rebuy
-
-        const owing = HoldemState.seatsOwingCash(state);
-        assert.deepEqual(owing.map(row => row.name), ["Ann", "Ben", "Cal"]);
-        assert.deepEqual(owing.map(row => row.fromStartingStack), [true, true, false]);
-        assert.deepEqual(owing.map(row => row.chips), [200, 200, 320]);
-    });
-
-    test("a seat whose buy-in is written down isn't on the list", () => {
-        const state = openedWithStartingStack();
-        state.seats[0].buyIns = 200;
-        assert.deepEqual(HoldemState.seatsOwingCash(state).map(row => row.name), ["Ben", "Cal"]);
-    });
-
-    test("and a table where nothing is owed has nobody on it", () => {
-        const state = openedWithStartingStack();
-        state.seats.slice(0, 3).forEach(p => { p.buyIns = 200; });
-        assert.deepEqual(HoldemState.seatsOwingCash(state), []);
-    });
-});
-
-describe("writing the starting stacks down", () => {
-    test("records exactly what those seats are holding", () => {
-        const state = openedWithStartingStack();
-        const done = HoldemState.recordStartingBuyIns(state);
-        assert.equal(done.seats, 3);
-        assert.equal(done.total, 600);
-        assert.deepEqual(state.seats.slice(0, 3).map(p => p.buyIns), [200, 200, 200]);
-        assert.equal(HoldemState.bankReconciliation(state).balanced, true);
-    });
-
-    test("and leaves somebody else's forgotten rebuy alone", () => {
-        // Only the dealer knows what that was. Guessing would be the tool inventing
-        // money, which is the fault this whole round is about.
-        const state = openedWithStartingStack();
-        state.seats[2].stack = 320;
-        HoldemState.recordStartingBuyIns(state);
-
-        assert.deepEqual(state.seats.slice(0, 3).map(p => p.buyIns), [200, 200, 0]);
-        const bank = HoldemState.bankReconciliation(state);
-        assert.equal(bank.balanced, false);
-        assert.equal(bank.difference, 320, "still exactly Cal's chips, and still reported");
-    });
-
-    test("does nothing on a table that doesn't need it", () => {
-        const state = openedWithStartingStack();
-        state.seats.slice(0, 3).forEach(p => { p.buyIns = 200; });
-        const done = HoldemState.recordStartingBuyIns(state);
-        assert.equal(done.seats, 0);
-        assert.equal(done.total, 0);
-        assert.deepEqual(state.seats.slice(0, 3).map(p => p.buyIns), [200, 200, 200]);
-    });
-});
-
-describe("through a hand", () => {
-    test("the money adds up from the deal to the payout", () => {
-        const state = openedWithStartingStack(200, ["Ann", "Ben", "Cal", "Dee"]);
-        HoldemState.recordStartingBuyIns(state);
-        assert.equal(HoldemState.bankReconciliation(state).balanced, true);
-
-        Betting.beginHand(state);
-        assert.equal(HoldemState.bankReconciliation(state).balanced, true, "blinds are still on the table");
-
-        [3, 0, 1].forEach(() => { if (state.actingSeatIndex !== null) Betting.call(state, state.actingSeatIndex); });
-        assert.equal(HoldemState.bankReconciliation(state).balanced, true);
-
-        const pot = Betting.potSoFar(state);
-        Betting.sweepToHandTotals(state);
-        Betting.creditWinnings(state, [{ id: state.seats[0].id, label: "Ann", amount: pot }]);
-        HoldemState.startNextHand(state);
-
-        const bank = HoldemState.bankReconciliation(state);
-        assert.equal(bank.balanced, true);
-        assert.equal(bank.chipsInPlay, 800, "four buy-ins of two hundred, wherever they have moved to");
-        assert.ok(state.seats[0].stack > 200, "and the winner is holding more than they sat down with");
-    });
-});

tests/holdem/state.test.js

@@ -1,147 +0,0 @@
-const { test, describe } = require("node:test");
-const assert = require("node:assert/strict");
-const { HoldemState, makeTable } = require("./load");
-
-describe("HoldemState.advanceButton", () => {
-    test("the button moves to the next player, not the next empty chair", () => {
-        // Four players spread around a ten-seat table: 0, 3, 4, 8.
-        const state = makeTable({ seatCount: 10, seated: [0, 3, 4, 8], dealerSeatIndex: 0 });
-        HoldemState.advanceButton(state);
-        assert.equal(state.dealerSeatIndex, 3, "skips the three empty chairs between");
-        HoldemState.advanceButton(state);
-        assert.equal(state.dealerSeatIndex, 4);
-        HoldemState.advanceButton(state);
-        assert.equal(state.dealerSeatIndex, 8);
-        HoldemState.advanceButton(state);
-        assert.equal(state.dealerSeatIndex, 0, "wraps back round to the first player");
-    });
-
-    test("every player gets the button once per orbit", () => {
-        const seated = [1, 2, 6, 7, 9];
-        const state = makeTable({ seatCount: 12, seated, dealerSeatIndex: 1 });
-        const visited = [];
-        for (let i = 0; i < seated.length; i++) {
-            visited.push(state.dealerSeatIndex);
-            HoldemState.advanceButton(state);
-        }
-        assert.deepEqual(visited.slice().sort((a, b) => a - b), seated);
-    });
-
-    test("it still moves when nobody is dealt in, rather than looking stuck", () => {
-        const state = makeTable({ seatCount: 6, seated: [], dealerSeatIndex: 2 });
-        HoldemState.advanceButton(state);
-        assert.equal(state.dealerSeatIndex, 3);
-    });
-
-    test("counterclockwise play runs the button the other way", () => {
-        const state = makeTable({ seatCount: 6, seated: [0, 2, 4], dealerSeatIndex: 4 });
-        state.direction = "counterclockwise";
-        HoldemState.advanceButton(state);
-        assert.equal(state.dealerSeatIndex, 2);
-    });
-});
-
-describe("HoldemState.getBlindSeats", () => {
-    test("blinds follow the players, not the chairs left of the button", () => {
-        // Seats 1 and 2 are empty, so the blinds belong on 3 and 7.
-        const state = makeTable({ seatCount: 9, seated: [0, 3, 7], dealerSeatIndex: 0 });
-        const { sbIndex, bbIndex, headsUp } = HoldemState.getBlindSeats(state);
-        assert.equal(headsUp, false);
-        assert.equal(sbIndex, 3);
-        assert.equal(bbIndex, 7);
-    });
-
-    test("heads-up, the button posts the small blind", () => {
-        const state = makeTable({ seatCount: 6, seated: [2, 5], dealerSeatIndex: 2 });
-        const { sbIndex, bbIndex, headsUp } = HoldemState.getBlindSeats(state);
-        assert.equal(headsUp, true);
-        assert.equal(sbIndex, 2, "the button is the small blind heads-up");
-        assert.equal(bbIndex, 5);
-    });
-
-    test("heads-up with the button on an empty chair still posts both blinds", () => {
-        const state = makeTable({ seatCount: 6, seated: [1, 4], dealerSeatIndex: 0 });
-        const { sbIndex, bbIndex, headsUp } = HoldemState.getBlindSeats(state);
-        assert.equal(headsUp, true);
-        assert.equal(sbIndex, 1);
-        assert.equal(bbIndex, 4);
-        assert.notEqual(sbIndex, bbIndex, "two blinds never land on one player");
-    });
-
-    test("fewer than two players means no blinds to post", () => {
-        const state = makeTable({ seatCount: 6, seated: [3], dealerSeatIndex: 0 });
-        const { sbIndex, bbIndex } = HoldemState.getBlindSeats(state);
-        assert.equal(sbIndex, null);
-        assert.equal(bbIndex, null);
-    });
-});
-
-describe("HoldemState.sessionStandings", () => {
-    test("a player's cash position counts chips in front plus chips in the pot", () => {
-        const state = makeTable({ seatCount: 3, seated: [0, 1, 2], stack: 0 });
-        const [a] = state.seats;
-        a.buyIns = 100;
-        a.stack = 60;
-        a.amountOverride = 25; // banked into the hand in progress
-        a.committed = 15;      // still in front of them on this street
-
-        HoldemState.recordHand(state, [{ id: a.id, label: "P1", amount: 0 }]);
-        const standings = HoldemState.sessionStandings(state);
-        const row = standings.find(s => s.id === a.id);
-
-        // 60 in front + 40 in the pot - 100 bought in = level.
-        assert.equal(row.cashPosition, 0, "money in the pot is still theirs until it's won");
-        assert.equal(row.boughtIn, 100);
-        assert.equal(row.chipsNow, 60);
-    });
-
-    test("hand results accumulate across the session", () => {
-        const state = makeTable({ seatCount: 2, seated: [0, 1], stack: 0 });
-        const [a, b] = state.seats;
-        a.amountOverride = 10;
-        b.amountOverride = 10;
-        HoldemState.recordHand(state, [{ id: a.id, label: "P1", amount: 20 }]);
-
-        a.amountOverride = 5;
-        b.amountOverride = 5;
-        HoldemState.recordHand(state, [{ id: b.id, label: "P2", amount: 10 }]);
-
-        const standings = HoldemState.sessionStandings(state);
-        assert.equal(standings.find(s => s.id === a.id).net, 5);
-        assert.equal(standings.find(s => s.id === b.id).net, -5);
-        assert.equal(state.handNumber, 3, "the counter moved on twice");
-    });
-
-    test("the history is capped so a long session can still be saved", () => {
-        const state = makeTable({ seatCount: 2, seated: [0, 1], stack: 0 });
-        for (let i = 0; i < HoldemState.MAX_HISTORY_ENTRIES + 25; i++) {
-            HoldemState.recordHand(state, [{ id: state.seats[0].id, label: "P1", amount: 1 }]);
-        }
-        assert.equal(state.handHistory.length, HoldemState.MAX_HISTORY_ENTRIES);
-        assert.equal(state.handHistory[0].handNumber, HoldemState.MAX_HISTORY_ENTRIES + 25, "newest first");
-    });
-});
-
-describe("HoldemState.resizeSeats", () => {
-    test("the table is clamped to a size a dealer could actually run", () => {
-        const state = makeTable({ seatCount: 6 });
-        HoldemState.resizeSeats(state, 100);
-        assert.equal(state.seatCount, 24);
-        HoldemState.resizeSeats(state, 1);
-        assert.equal(state.seatCount, 2);
-    });
-
-    test("an unreadable seat count falls back to a standard table", () => {
-        // Empty or non-numeric input (and zero, which is equally meaningless)
-        // lands on the default rather than a two-seat table.
-        const state = makeTable({ seatCount: 6 });
-        HoldemState.resizeSeats(state, NaN);
-        assert.equal(state.seatCount, HoldemState.DEFAULT_SEAT_COUNT);
-    });
-
-    test("shrinking past the button brings it back onto the table", () => {
-        const state = makeTable({ seatCount: 9, dealerSeatIndex: 8 });
-        HoldemState.resizeSeats(state, 4);
-        assert.ok(state.dealerSeatIndex < 4);
-    });
-});

tests/holdem/straddle.test.js

@@ -1,188 +0,0 @@
-// The straddle: a blind raise put out before the cards by the player left of the big
-// blind, for twice it.
-//
-// Home games run them constantly, and it is three rules at once — the amount, who is
-// first to act, and what the minimum raise becomes. Faking one by dealing and having
-// the straddler "raise" gets the last of those right and the other two wrong.
-const test = require("node:test");
-const { describe } = require("node:test");
-const assert = require("node:assert");
-const { Betting, HoldemState, makeTable, chipsOnTable } = require("./load");
-
-// Six seats, everyone in, button on seat 0: small blind seat 1, big blind seat 2,
-// straddle seat 3.
-const table = (straddles = 0, extra = {}) => {
-    const state = makeTable({ seatCount: 6, stack: 200, smallBlind: 1, bigBlind: 2, dealerSeatIndex: 0, ...extra });
-    state.straddleCount = straddles;
-    return state;
-};
-
-const dealt = (straddles = 0, extra = {}) => {
-    const state = table(straddles, extra);
-    Betting.beginHand(state);
-    return state;
-};
-
-describe("what goes in the middle", () => {
-    test("the seat left of the big blind puts out twice it", () => {
-        const state = dealt(1);
-        assert.deepEqual(state.seats.map(p => p.committed), [0, 1, 2, 4, 0, 0]);
-    });
-
-    test("a re-straddle doubles again, one seat further round", () => {
-        const state = dealt(2);
-        assert.deepEqual(state.seats.map(p => p.committed), [0, 1, 2, 4, 8, 0]);
-    });
-
-    test("none of it comes from anywhere but the straddler's stack", () => {
-        const before = chipsOnTable(table(2));
-        assert.equal(chipsOnTable(dealt(2)), before);
-    });
-
-    test("the felt is told who straddled, not left to work it out", () => {
-        assert.deepEqual(dealt(2).postedStraddles, [3, 4]);
-        assert.deepEqual(dealt(0).postedStraddles, []);
-    });
-});
-
-describe("who is on the clock", () => {
-    test("action starts left of the straddler, not left of the big blind", () => {
-        assert.equal(dealt(0).actingSeatIndex, 3, "without a straddle it is the seat after the big blind");
-        assert.equal(dealt(1).actingSeatIndex, 4);
-        assert.equal(dealt(2).actingSeatIndex, 5);
-    });
-
-    test("the straddler still has the option when it comes back to them", () => {
-        const state = dealt(1);
-        // Everyone calls the straddle round to the big blind.
-        [4, 5, 0, 1, 2].forEach(seat => {
-            assert.equal(state.actingSeatIndex, seat, `expected seat ${seat} to be up`);
-            Betting.call(state, seat);
-        });
-        assert.equal(state.actingSeatIndex, 3, "back to the straddler");
-        assert.equal(Betting.toCall(state, state.seats[3]), 0, "nothing to call");
-        assert.equal(Betting.isStreetComplete(state), false, "and the street isn't over until they say so");
-    });
-
-    test("the straddler checking closes it", () => {
-        const state = dealt(1);
-        [4, 5, 0, 1, 2].forEach(seat => Betting.call(state, seat));
-        Betting.check(state, 3);
-        assert.equal(Betting.isStreetComplete(state), true);
-        assert.equal(state.actingSeatIndex, null);
-    });
-
-    test("the big blind acts in turn, not last", () => {
-        const state = dealt(1);
-        Betting.call(state, 4);
-        Betting.call(state, 5);
-        Betting.call(state, 0);
-        Betting.call(state, 1);
-        assert.equal(state.actingSeatIndex, 2, "the big blind is up before the straddler");
-        assert.equal(Betting.toCall(state, state.seats[2]), 2, "and owes the difference to the straddle");
-    });
-});
-
-describe("what it costs to raise", () => {
-    test("the minimum raise is twice the straddle, not the straddle plus a blind", () => {
-        // $2 blinds, $4 straddle: the next raise is to $8. Measured off the big blind
-        // instead it comes out at $6, and every player at the table would argue.
-        assert.equal(Betting.minRaiseTo(dealt(1)), 8);
-        assert.equal(Betting.minRaiseTo(dealt(2)), 16);
-        assert.equal(Betting.minRaiseTo(dealt(0)), 4);
-    });
-
-    test("what the table owes is measured off the straddle", () => {
-        const state = dealt(1);
-        assert.equal(state.currentBet, 4);
-        assert.equal(Betting.toCall(state, state.seats[4]), 4, "a fresh player calls the straddle");
-        assert.equal(Betting.toCall(state, state.seats[1]), 3, "the small blind owes the rest");
-        assert.equal(Betting.toCall(state, state.seats[2]), 2, "so does the big blind");
-        assert.equal(Betting.toCall(state, state.seats[3]), 0, "the straddler is already good");
-    });
-
-    test("a raise over the straddle is a raise, and the straddler can still re-raise", () => {
-        const state = dealt(1);
-        Betting.raiseTo(state, 4, 12);
-        assert.equal(state.currentBet, 12);
-        assert.equal(Betting.minRaiseTo(state), 20, "twice again over a raise of eight");
-        assert.equal(state.seats[3].hasActed, false, "the straddler has not acted yet");
-    });
-});
-
-describe("how many a table can take", () => {
-    test("everyone but the two blinds", () => {
-        assert.equal(Betting.maxStraddles(table(0)), 4);
-        assert.equal(Betting.maxStraddles(table(0, { seatCount: 3, seated: [0, 1, 2] })), 1);
-    });
-
-    test("heads-up, none — there is no seat left of the big blind to straddle from", () => {
-        const heads = table(1, { seatCount: 6, seated: [0, 1] });
-        assert.equal(Betting.maxStraddles(heads), 0);
-        assert.deepEqual(Betting.straddleSeats(heads), []);
-        Betting.beginHand(heads);
-        assert.deepEqual(heads.seats.map(p => p.committed), [1, 2, 0, 0, 0, 0]);
-    });
-
-    test("asking for more than the table has stops at the last seat", () => {
-        const state = table(0, { seatCount: 4, seated: [0, 1, 2, 3] });
-        state.straddleCount = 99;
-        assert.equal(Betting.straddleSeats(state).length, 2);
-        Betting.beginHand(state);
-        assert.deepEqual(state.seats.map(p => p.committed), [8, 1, 2, 4]);
-        assert.equal(state.actingSeatIndex, 1, "round to the small blind, who is first to act");
-    });
-
-    test("a seat with no chips is never handed one", () => {
-        const state = table(1);
-        state.seats[3].stack = 0;
-        // Seat 3 is sat out for the deal, so the straddle passes to seat 4.
-        assert.deepEqual(Betting.straddleSeats(state), [{ index: 4, amount: 4 }]);
-    });
-});
-
-describe("what it doesn't outlive", () => {
-    test("the hand it was called for", () => {
-        const state = dealt(1);
-        HoldemState.startNextHand(state);
-        assert.equal(state.straddleCount, 0, "nobody straddles again by accident");
-        assert.deepEqual(state.postedStraddles, []);
-    });
-
-    test("but it survives the button being pushed around before the deal", () => {
-        // repostBlinds takes every posted chip back and deals again; a straddle that
-        // vanished there would have been paid once and never returned.
-        const state = dealt(1);
-        const before = chipsOnTable(state);
-        Betting.repostBlinds(state);
-        assert.deepEqual(state.seats.map(p => p.committed), [0, 1, 2, 4, 0, 0]);
-        assert.equal(chipsOnTable(state), before);
-    });
-
-    test("a table saved before straddles existed reads as having none", () => {
-        const parsed = JSON.parse(JSON.stringify(makeTable({ seatCount: 6 })));
-        delete parsed.straddleCount;
-        delete parsed.postedStraddles;
-        const migrated = HoldemState.migrate(parsed);
-        assert.equal(migrated.straddleCount, 0);
-        assert.deepEqual(migrated.postedStraddles, []);
-    });
-});
-
-describe("what the dealer is shown before dealing", () => {
-    test("the straddles that are coming, and how many more it could take", () => {
-        const preview = Betting.blindPreview(table(1));
-        assert.deepEqual(preview.straddles, [{ index: 3, amount: 4 }]);
-        assert.equal(preview.maxStraddles, 4);
-    });
-
-    test("and the preview matches what dealing actually does", () => {
-        const state = table(2);
-        const preview = Betting.blindPreview(state);
-        Betting.beginHand(state);
-        assert.deepEqual(preview.straddles.map(s => s.index), state.postedStraddles);
-        preview.straddles.forEach(({ index, amount }) => {
-            assert.equal(state.seats[index].committed, amount, `seat ${index + 1}`);
-        });
-    });
-});

tests/holdem/swapSeats.test.js

@@ -1,95 +0,0 @@
-// Two players changing chairs.
-const test = require("node:test");
-const assert = require("node:assert");
-const { Betting, HoldemState, makeTable, chipsOnTable } = require("./load");
-
-test("the whole seat moves", () => {
-    const state = makeTable({ seatCount: 6, seated: [0, 1, 2], stack: 100 });
-    state.seats[0].name = "Ann";
-    state.seats[0].cards = ["AS", "KD"];
-    state.seats[0].stack = 175;
-    state.seats[4].name = "";
-
-    HoldemState.swapSeats(state, 0, 4);
-
-    assert.equal(state.seats[4].name, "Ann");
-    assert.deepEqual(state.seats[4].cards, ["AS", "KD"]);
-    assert.equal(state.seats[4].stack, 175);
-    assert.equal(state.seats[0].name, "");
-});
-
-test("what they have in the pot goes with them", () => {
-    const state = makeTable({ seatCount: 6, seated: [0, 1, 2], stack: 100 });
-    Betting.beginHand(state);
-    const posted = state.seats.map(p => p.committed);
-    const before = chipsOnTable(state);
-
-    HoldemState.swapSeats(state, 1, 4);
-
-    assert.equal(state.seats[4].committed, posted[1]);
-    assert.equal(state.seats[1].committed, posted[4]);
-    assert.equal(chipsOnTable(state), before, "a swap never creates or destroys a chip");
-});
-
-test("the button stays on the chair, not on the player", () => {
-    // A card room moves the button around the table, not around the people. Somebody
-    // who sits down in the big blind's chair is the big blind.
-    const state = makeTable({ seatCount: 6, seated: [0, 1, 2], stack: 100, dealerSeatIndex: 0 });
-    state.seats[0].name = "Ann";
-
-    HoldemState.swapSeats(state, 0, 2);
-
-    assert.equal(state.dealerSeatIndex, 0);
-    assert.notEqual(state.seats[0].name, "Ann");
-});
-
-test("the blinds follow the chairs too", () => {
-    const state = makeTable({ seatCount: 6, seated: [0, 1, 2, 3], stack: 100, dealerSeatIndex: 0 });
-    Betting.beginHand(state);
-    const before = HoldemState.getBlindSeats(state);
-
-    HoldemState.swapSeats(state, before.sbIndex, before.bbIndex);
-    const after = HoldemState.getBlindSeats(state);
-
-    assert.equal(after.sbIndex, before.sbIndex);
-    assert.equal(after.bbIndex, before.bbIndex);
-});
-
-test("swapping a seat with itself does nothing and says so", () => {
-    const state = makeTable({ seatCount: 6, seated: [0, 1], stack: 100 });
-    const before = JSON.stringify(state);
-
-    assert.equal(HoldemState.swapSeats(state, 1, 1), false);
-    assert.equal(JSON.stringify(state), before);
-});
-
-test("a chair that isn't there is refused rather than swallowed", () => {
-    const state = makeTable({ seatCount: 6, seated: [0, 1], stack: 100 });
-    const before = JSON.stringify(state);
-
-    assert.equal(HoldemState.swapSeats(state, 0, 99), false);
-    assert.equal(HoldemState.swapSeats(state, -1, 0), false);
-    assert.equal(JSON.stringify(state), before);
-});
-
-test("swapping twice puts everything back", () => {
-    const state = makeTable({ seatCount: 6, seated: [0, 1, 2, 3], stack: 100 });
-    Betting.beginHand(state);
-    const before = JSON.stringify(state);
-
-    HoldemState.swapSeats(state, 1, 3);
-    HoldemState.swapSeats(state, 1, 3);
-
-    assert.equal(JSON.stringify(state), before);
-});
-
-test("moving into an empty chair leaves an empty chair behind", () => {
-    const state = makeTable({ seatCount: 6, seated: [0, 1], stack: 100 });
-    state.seats[1].name = "Ben";
-
-    HoldemState.swapSeats(state, 1, 5);
-
-    assert.equal(state.seats[5].name, "Ben");
-    assert.equal(state.seats[5].inHand, true);
-    assert.equal(state.seats[1].inHand, false);
-});

tests/holdem/tableFile.test.js

@@ -1,155 +0,0 @@
-// Taking the table off this device.
-//
-// A night lives in one browser's localStorage and nowhere else. A dealer whose phone
-// dies, or who wants to carry on from the tablet after the break, loses the stacks,
-// the buy-ins, where the button is and the whole hand log — and the CSV export can't
-// bring any of that back, because it records what happened rather than where the
-// table stands.
-const test = require("node:test");
-const { describe } = require("node:test");
-const assert = require("node:assert");
-const { HoldemState, Betting, makeTable } = require("./load");
-
-const aNight = () => {
-    const state = makeTable({ seatCount: 9, seated: [0, 1, 2, 3], stack: 200, dealerSeatIndex: 1 });
-    ["Ann", "Ben", "Cal", "Dee"].forEach((name, i) => {
-        state.seats[i].name = name;
-        state.seats[i].buyIns = 200;
-    });
-    state.seats[2].stack = 340;
-    state.notes = "Cal owes the bar $12";
-    Betting.beginHand(state);
-    HoldemState.recordHand(state, [{ id: state.seats[2].id, label: "Cal", amount: 60 }]);
-    return state;
-};
-
-describe("a table written out and read back", () => {
-    test("comes back the same table", () => {
-        const before = aNight();
-        const after = HoldemState.fromBackup(HoldemState.toBackup(before)).table;
-
-        assert.deepEqual(after.seats.map(p => p.name), before.seats.map(p => p.name));
-        assert.deepEqual(after.seats.map(p => p.stack), before.seats.map(p => p.stack));
-        assert.deepEqual(after.seats.map(p => p.buyIns), before.seats.map(p => p.buyIns));
-        assert.equal(after.dealerSeatIndex, before.dealerSeatIndex);
-        assert.equal(after.handNumber, before.handNumber);
-        assert.equal(after.notes, before.notes);
-        assert.equal(after.handHistory.length, before.handHistory.length);
-    });
-
-    test("keeps the things a CSV can't carry", () => {
-        // The whole reason this exists: an export records what happened, not where the
-        // table stands.
-        const before = aNight();
-        const after = HoldemState.fromBackup(HoldemState.toBackup(before)).table;
-
-        assert.equal(after.bettingOpen, before.bettingOpen, "a hand in progress is still in progress");
-        assert.deepEqual(after.postedBlinds, before.postedBlinds, "so the next rotation is right");
-        assert.equal(after.street, before.street);
-        assert.deepEqual(after.seats.map(p => p.committed), before.seats.map(p => p.committed));
-        assert.deepEqual(after.chipLegend, before.chipLegend);
-    });
-
-    test("the standings and the bank check agree across the trip", () => {
-        const before = aNight();
-        const after = HoldemState.fromBackup(HoldemState.toBackup(before)).table;
-
-        assert.deepEqual(HoldemState.sessionStandings(after), HoldemState.sessionStandings(before));
-        assert.deepEqual(HoldemState.bankReconciliation(after), HoldemState.bankReconciliation(before));
-    });
-
-    test("it can be dealt from straight away", () => {
-        const before = aNight();
-        HoldemState.startNextHand(before);
-        const after = HoldemState.fromBackup(HoldemState.toBackup(before)).table;
-
-        Betting.beginHand(after);
-        assert.equal(after.bettingOpen, true);
-        assert.ok(after.actingSeatIndex !== null, "somebody is on the clock");
-    });
-});
-
-describe("what it refuses", () => {
-    const refuses = (text, because) => {
-        const result = HoldemState.fromBackup(text);
-        assert.ok(result.error, because);
-        assert.equal(result.table, undefined, "and never hands back half a table");
-    };
-
-    test("something that isn't JSON", () => {
-        refuses("not a file", "unreadable");
-        refuses("", "empty");
-    });
-
-    test("JSON that isn't a table", () => {
-        refuses('{"hello":"world"}', "no seats in it");
-        refuses("[1,2,3]", "an array of nothing");
-        refuses("null", "null");
-    });
-
-    test("a save from something else that happens to be JSON", () => {
-        refuses('{"kind":"some.other.tool","table":{"seats":[]}}', "wrong kind");
-    });
-
-    test("a file from a newer version, rather than guessing at it", () => {
-        // Loading it risks reading a field whose meaning has changed, and the dealer
-        // would find out from the money.
-        const backup = JSON.parse(HoldemState.toBackup(aNight()));
-        backup.version = HoldemState.BACKUP_VERSION + 1;
-        const result = HoldemState.fromBackup(JSON.stringify(backup));
-        assert.match(result.error, /newer version/i);
-    });
-});
-
-describe("what it accepts anyway", () => {
-    test("a bare table, with no envelope around it", () => {
-        // Somebody who copied the storage value out by hand. The envelope is a
-        // convenience, not a password.
-        const state = aNight();
-        const result = HoldemState.fromBackup(JSON.stringify(state));
-        assert.ok(!result.error);
-        assert.deepEqual(result.table.seats.map(p => p.name), state.seats.map(p => p.name));
-    });
-
-    test("a table from before fields that exist now, migrated on the way in", () => {
-        // Same repairs a save from an older version gets, because it is the same
-        // function — a second, looser path for imports is how a format grows two
-        // meanings of the same field.
-        const state = aNight();
-        const raw = JSON.parse(JSON.stringify(state));
-        delete raw.deadButton;
-        delete raw.postedBlinds;
-        delete raw.dealtLastHand;
-        delete raw.discarded;
-        raw.seats.forEach(p => { delete p.buyIns; });
-
-        const { table, error } = HoldemState.fromBackup(JSON.stringify({
-            kind: HoldemState.BACKUP_KIND, version: 1, table: raw,
-        }));
-        assert.ok(!error);
-        assert.equal(table.deadButton, false);
-        assert.deepEqual(table.dealtLastHand, []);
-        assert.equal(table.discarded, 0);
-        assert.equal(table.seats[0].buyIns, 0);
-    });
-
-    test("the time it was saved comes back with it", () => {
-        const result = HoldemState.fromBackup(HoldemState.toBackup(aNight()));
-        assert.ok(result.savedAt, "so the dealer can tell two files apart");
-        assert.ok(!Number.isNaN(new Date(result.savedAt).getTime()));
-    });
-});
-
-describe("the file itself", () => {
-    test("is named with the date and time, so two saves in a night are told apart", () => {
-        const at = new Date(2026, 8, 2, 21, 5);
-        assert.equal(HoldemState.backupFileName(at), "holdem-table-2026-09-02-2105.json");
-    });
-
-    test("says what it is, for anyone finding it in a downloads folder", () => {
-        const parsed = JSON.parse(HoldemState.toBackup(aNight()));
-        assert.equal(parsed.kind, "casino.holdem.table");
-        assert.equal(parsed.version, 1);
-        assert.ok(parsed.table.seats.length > 0);
-    });
-});