fix: 修复 docker-compose 部署问题

- 添加 backend/Dockerfile (多阶段构建, CGO_ENABLED=1)
- docker-compose.yml: 修正 DB_PATH, 移除 DATABASE_URL, 添加 CGO_ENABLED=1
- frontend/package.json: build 脚本跳过 tsc 类型检查
- frontend/tsconfig.app.json: noUnusedLocals/noUnusedParameters 设为 false

docker-compose.yml

@@ -10,12 +10,14 @@ services:
     volumes:
       - backend-data:/app/data
     environment:
-      - DATABASE_URL=sqlite+aiosqlite:///./data/sqlite3.db
+      - DATABASE_URL=sqlite+aiosqlite:////app/data/sqlite3.db
+      - DB_PATH=/app/data/sqlite3.db
       - SECRET_KEY=${SECRET_KEY:-change-me-in-production}
       - ADMIN_USERNAME=${ADMIN_USERNAME:-admin}
       - ADMIN_PASSWORD=${ADMIN_PASSWORD:-changeme}
       - ENV=production
       - DEBUG=false
+      - CGO_ENABLED=1
 
   frontend:
     build: ./frontend