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/Pages/Casino/TexasHoldem.cshtml

@@ -230,6 +230,18 @@
     </div>
 </template>
 
+<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" 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>
@@ -279,6 +291,7 @@
     <script src="~/js/casino/holdem/state.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/betting.js?v=@ViewData["cssVersion"]"></script>
     <script src="~/js/casino/holdem/actionBar.js?v=@ViewData["cssVersion"]"></script>
     <script src="~/js/casino/holdem/potWizard.js?v=@ViewData["cssVersion"]"></script>