为所有函数和类添加中文注释文档字符串

app/signaling/websocket_server.py

@@ -11,6 +11,7 @@ from configs.load import config
 
 
 async def handle_client(websocket):
+    """处理单个WebSocket客户端连接"""
     client = websocket.remote_address
     logger.info(f"Client connected: {client}")
 
@@ -21,6 +22,7 @@ async def handle_client(websocket):
 
 
 async def main():
+    """启动WebSocket信令服务器"""
     cfg = config.server
     logger.info(f"WebRTC signaling server: ws://{cfg.host}:{cfg.port}")
     async with websockets.serve(handle_client, cfg.host, cfg.port, max_size=cfg.max_ws_size):