Feature: public rooms, mobile UX, reconnection, and gameplay fixes

Rooms & lobby
- Rename docker-compose.yml → compose.yml
- Public/Private toggle on room creation; public rooms assign random seats
  to prevent team collusion
- GET /api/rooms API — lists open public rooms; Join tab shows live list
  with one-tap join
- Room creator: swap any two seats by tapping (select-to-swap UI); ▶ Start
  Game button force-starts with bots filling empty seats

Reconnection
- Session moved from sessionStorage → localStorage (survives browser close)
- Socket handlers split: socket.once for one-shot callbacks, persistent
  socket.on('connect') for auto-rejoin on network drops
- Server rejoin accepts userId match as fallback (cross-device rejoin for
  authenticated users); re-issues token on success
- Server emits hasActiveGame on connect so auth'd users on a new device are
  pulled back into their game automatically
- Explicit leave nulls seat/token/userIds so hasActiveGame never re-drags a
  player back in after they chose to leave

Mobile UX
- Remove all opponent/partner card backs; replace with compact card-count
  badge — frees ~120px of vertical space on small phones
- Screen height: 100dvh (dynamic viewport) instead of 100vh — fixes the
  "only top 1/5 visible" issue on phones with browser chrome
- Table grid side columns shrunk to 36px on touch devices; player names
  rotated vertically
- Bidding overlay: transparent non-blocking top panel on touch; hand stays
  visible and interactive; auto fan-mode during bidding
- touch-action: pan-x on hand scroll, none in fan/drag mode — suppresses
  Android back-gesture and Google Gemini conflicts
- user-select: none on game screen prevents long-press selection menus

Gameplay & notifications
- Center trick area now shows whose turn it is instead of trump (trump is
  already in the info bar); flashes gold when it's the player's turn
- Turn reminder after 5 s of inaction: gold glow pulse on hand area
  + Android vibration OR two-note Web Audio chime on iOS (vibrate API not
  supported by Apple)
- Fix: turn reminder was never triggered after winning a trick — justWon
  branch blocked myTurnNow from being set even when currentTurn === mySeat
- Waiting room ☰ menu: Reload and Exit accessible without entering the game
- Prevent duplicate room joins (same socket, same userId, or same name)

Service worker
- Bump to shelem-v2; pre-cache all 55 card SVGs at install time so cards
  are available instantly from the very first hand, including offline

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

docker-compose.yml

@@ -1,16 +0,0 @@
-services:
-  shelem:
-    container_name: shelem
-    build: .
-    ports:
-      - "4001:4000"
-      - "4444:4443"
-    restart: unless-stopped
-    volumes:
-      - ./data:/app/data
-      # Hokm's data dir (read-only) — allows Hokm accounts to log into Shelem
-      - /root/hokm/data:/hokm-data:ro
-      # Share card SVGs from Hearts/Hokm — same assets, no duplication
-      - /root/hearts/public/cards:/app/public/cards:ro
-    env_file:
-      - .env