修复webhook url指定

app.py

@@ -7,7 +7,7 @@ from fastapi.responses import JSONResponse
 from contextlib import asynccontextmanager
 import asyncio
 
-from config import APP_CONFIG, SESSION_TIMEOUT
+from config import APP_CONFIG, SESSION_TIMEOUT, SetWebhookURL, GetWebhookURL
 from core.middleware import ConcurrencyLimitMiddleware
 from core.database import get_db
 from routers import callback, health
@@ -125,14 +125,8 @@ if __name__ == "__main__":
     
     # 如果提供了webhook URL，设置环境变量
     if args.webhook_url:
-        os.environ['WEBHOOK_URL'] = args.webhook_url
+        SetWebhookURL(args.webhook_url)
         logger.info(f"设置Webhook URL: {args.webhook_url}")
-        
-        # 重新导入配置模块以更新WEBHOOK_URL
-        import importlib
-        import config
-        importlib.reload(config)
-        logger.info(f"更新后的Webhook URL: {config.WEBHOOK_URL}")
     
     # 启动服务器
     uvicorn.run(