fix: 修复 run.py 导入错误 + 添加生产环境 docker-compose

- 修复 socketio 导入问题
- 添加 docker-compose.prod.yaml（简化版，使用 SQLite + Redis）

作者: 小白 🐶

docker-compose.prod.yaml

@@ -0,0 +1,50 @@
+version: '3.8'
+
+services:
+  pit-router:
+    build: .
+    ports:
+      - "1999:1999"
+    environment:
+      - FLASK_ENV=production
+      - SECRET_KEY=${SECRET_KEY}
+      - JWT_SECRET_KEY=${JWT_SECRET_KEY}
+      - DATABASE_URL=sqlite:////app/data/pit.db
+      - REDIS_URL=redis://redis:6379/0
+    volumes:
+      - pit-data:/app/data
+      - pit-logs:/app/logs
+    depends_on:
+      redis:
+        condition: service_healthy
+    restart: unless-stopped
+    healthcheck:
+      test: ["CMD", "curl", "-f", "http://localhost:1999/health"]
+      interval: 30s
+      timeout: 10s
+      retries: 3
+      start_period: 40s
+    deploy:
+      resources:
+        limits:
+          cpus: '2.0'
+          memory: 2G
+        reservations:
+          cpus: '0.5'
+          memory: 512M
+  
+  redis:
+    image: redis:7-alpine
+    volumes:
+      - redis-data:/data
+    restart: unless-stopped
+    healthcheck:
+      test: ["CMD", "redis-cli", "ping"]
+      interval: 10s
+      timeout: 5s
+      retries: 5
+
+volumes:
+  pit-data:
+  pit-logs:
+  redis-data:

run.py

@@ -1,8 +1,7 @@
 """
 PIT Router 启动入口
 """
-from app import create_app
-from app.extensions import socketio
+from app import create_app, socketio_app as socketio
 
 app = create_app('development')