Add double-tap and press-and-hold shortcuts to the seats

Folding someone meant opening their editor, finding the Fold box, ticking it,
and dismissing the sheet — four interactions for the thing that happens most
often in a hand.

Double-tap a seat to fold, and again to put them back. Press and hold for a
quick menu of everything else you do to one player: fold, all-in, sit out or
deal in, hand them the button, or open the full editor. Both are undoable the
same way the header buttons are, because a gesture is easier to fire by
accident than a button.

The single tap now waits out the double-tap window before opening the editor —
a fifth of a second of latency on opening a form, in exchange for a fold that
doesn't also fling a sheet up over the table. A press that moves is a drag, so
the hold is cancelled and swapping seats still works, and the puck shrinks
slightly while held so a press that's being counted looks different from one
that's being ignored.

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

JoshHeaps.Net/wwwroot/css/casino/holdem.css

@@ -238,7 +238,12 @@ body {
     cursor: grab;
     z-index: 1;
     text-align: center;
-    transition: box-shadow 0.15s ease, border-color 0.15s ease;
+    transition: box-shadow 0.15s ease, border-color 0.15s ease, transform 0.1s ease;
+    /* A long press on a phone otherwise selects the player's name or raises the
+       system callout menu instead of ours. */
+    user-select: none;
+    -webkit-user-select: none;
+    -webkit-touch-callout: none;
 }
 
 .seat.dragging {
@@ -518,6 +523,99 @@ body {
     font-weight: 400;
 }
 
+/* ---------- Seat long-press menu ---------- */
+
+/* Held down, before the menu opens — the only feedback that a press is being
+   counted rather than ignored. */
+.seat.seatPressing {
+    transform: translate(-50%, -50%) scale(0.94);
+}
+
+#seatMenuOverlay {
+    position: fixed;
+    inset: 0;
+    background: rgba(0, 0, 0, 0.72);
+    display: flex;
+    align-items: flex-end;
+    justify-content: center;
+    z-index: 96;
+}
+
+#seatMenuOverlay[hidden] {
+    display: none;
+}
+
+#seatMenuSheet {
+    width: 100%;
+    max-width: 420px;
+    background: linear-gradient(180deg, #242424, #1a1a1a);
+    border: 1px solid #3a3a3a;
+    border-bottom: none;
+    border-radius: 16px 16px 0 0;
+    padding: 0.35rem 0.9rem calc(1rem + env(safe-area-inset-bottom, 0px));
+    box-shadow: 0 -14px 40px rgba(0, 0, 0, 0.65);
+}
+
+.seatMenuHeader {
+    margin-bottom: 0.8rem;
+}
+
+.seatMenuHeader h2 {
+    margin: 0;
+    font-size: 1.05rem;
+    font-weight: 500;
+    color: #f5f5f5;
+}
+
+#seatMenuSubtitle {
+    color: #9a9a9a;
+    font-size: 0.8rem;
+    font-variant-numeric: tabular-nums;
+}
+
+#seatMenuActions {
+    display: flex;
+    flex-direction: column;
+    gap: 0.45rem;
+    margin-bottom: 0.6rem;
+}
+
+.seatMenuBtn {
+    width: 100%;
+    min-height: 52px;
+    border-radius: 11px;
+    border: 1px solid #3a3a3a;
+    background: linear-gradient(180deg, #2e2e2e, #232323);
+    color: #eee;
+    font-family: inherit;
+    font-size: 0.95rem;
+    cursor: pointer;
+    transition: all 0.12s ease;
+}
+
+.seatMenuBtn:hover {
+    border-color: #4a4a4a;
+    background: linear-gradient(180deg, #383838, #2a2a2a);
+}
+
+.seatMenuBtn.menuDanger {
+    background: linear-gradient(180deg, #3d1f1f, #2c1515);
+    border-color: #5b2626;
+    color: #ffd6d6;
+}
+
+.seatMenuBtn.menuAccent {
+    background: linear-gradient(180deg, #3a2f18, #241d0f);
+    border-color: #a9782f;
+    color: #f0d9a8;
+}
+
+#seatMenuCancelBtn {
+    width: 100%;
+    justify-content: center;
+    min-height: 48px;
+}
+
 /* ---------- Card picker ---------- */
 
 #cardPickerOverlay {