Add a rulings reference for the calls that come up mid-hand

The tool handles the money; the other half of dealing is the calls. A home-game
dealer who isn't a pro has to rule on a misdeal or a prematurely turned board
card with a table watching, and the usual outcome is an argument settled by
whoever is loudest.

A "Common rulings" link under the table opens a reference for exactly the
situations that come up: what counts as a misdeal, what to do when the fourth
board card gets turned before the betting is finished, and how acting out of
turn is normally treated. It follows the Tournament Directors Association
rules, and says plainly that house rules win and that a dispute gets settled
between hands rather than during one.

It's a sheet rather than a sixth sidebar panel — a dealer consults this rarely
and needs it immediately, which is the opposite of what a panel is for.

Co-Authored-By: Claude Sonnet 5 <[email protected]>
Claude-Session: https://claude.ai/code/session_015bnp7xKUPFFSpwkYNFaPgb

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

@@ -260,6 +260,17 @@ document.addEventListener("DOMContentLoaded", () => {
 
     document.getElementById("closeSeatEditorBtn").addEventListener("click", () => Render.closeSeatEditor());
 
+    const rulingsOverlay = document.getElementById("rulingsOverlay");
+    const closeRulings = () => { rulingsOverlay.hidden = true; };
+    document.getElementById("openRulingsBtn").addEventListener("click", () => { rulingsOverlay.hidden = false; });
+    document.getElementById("closeRulingsBtn").addEventListener("click", closeRulings);
+    rulingsOverlay.addEventListener("click", e => {
+        if (e.target === rulingsOverlay) closeRulings();
+    });
+    document.addEventListener("keydown", e => {
+        if (e.key === "Escape" && !rulingsOverlay.hidden) closeRulings();
+    });
+
     document.getElementById("seatMenuCancelBtn").addEventListener("click", () => SeatMenu.close());
     document.getElementById("seatMenuOverlay").addEventListener("click", e => {
         if (e.target.id === "seatMenuOverlay") SeatMenu.close();

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

@@ -35,7 +35,7 @@ const Shortcuts = {
     // An overlay owns the keyboard while it's up: the confirm dialog already binds
     // Enter and Escape, and the card picker and seat menu are modal.
     overlayOpen() {
-        return ["confirmOverlay", "potWizardOverlay", "cardPickerOverlay", "seatMenuOverlay"]
+        return ["confirmOverlay", "potWizardOverlay", "cardPickerOverlay", "seatMenuOverlay", "rulingsOverlay"]
             .some(id => {
                 const el = document.getElementById(id);
                 return el && !el.hidden;