fix: Docker one-click deployment — all deps bundled, native modules, health check

- Multi-stage build: builder installs backend + frontend deps, compiles
- Production stage: npm ci --production rebuilds native modules (opus, sqlite3)
- FFmpeg bundled via ffmpeg-static (no apt install ffmpeg)
- .dockerignore prevents node_modules/dist from being copied
- docker-compose uses host network for TS3 UDP connectivity
- Named volume for persistent data
- Health check endpoint

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

scripts/docker/docker-compose.yml

@@ -1,4 +1,8 @@
-version: '3.8'
+# TSMusicBot — Docker Compose
+# 一键部署：docker-compose up -d
+#
+# 所有依赖已内置（Node.js, FFmpeg, Opus 编码器）
+# 无需安装任何额外软件
 
 services:
   tsmusicbot:
@@ -6,10 +10,20 @@ services:
       context: ../..
       dockerfile: scripts/docker/Dockerfile
     container_name: tsmusicbot
-    ports:
-      - "3000:3000"
+    # Use host network so the bot can reach TS3 server on LAN
+    # If your TS3 server is on the same machine, this is required
+    network_mode: host
+    # If you prefer port mapping instead of host network, comment out
+    # network_mode and uncomment ports:
+    # ports:
+    #   - "3000:3000"     # WebUI
+    #   - "9987:9987/udp" # TS3 voice (only if TS3 server is in another container)
     volumes:
-      - ./data:/app/data
+      - tsmusicbot-data:/app/data
     restart: unless-stopped
     environment:
       - NODE_ENV=production
+
+volumes:
+  tsmusicbot-data:
+    driver: local