修复webhook url指定无效的问题

app.py

@@ -127,6 +127,12 @@ if __name__ == "__main__":
     if args.webhook_url:
         os.environ['WEBHOOK_URL'] = 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(