Add features: escalating turn reminder, AFK AI takeover, public rooms, persistent rejoin

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

compose.build.yml

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