fix - 优化normal_chat代码，采用和focus一致的关系构建，优化log，添加超时检查，允许normal使用llm激活

src/chat/replyer/replyer_manager.py

@@ -14,7 +14,6 @@ class ReplyerManager:
         self,
         chat_stream: Optional[ChatStream] = None,
         chat_id: Optional[str] = None,
-        enable_tool: bool = False,
         model_configs: Optional[List[Dict[str, Any]]] = None,
         request_type: str = "replyer",
     ) -> Optional[DefaultReplyer]:
@@ -50,7 +49,6 @@ class ReplyerManager:
         # model_configs 只在此时（初始化时）生效
         replyer = DefaultReplyer(
             chat_stream=target_stream,
-            enable_tool=enable_tool,
             model_configs=model_configs,  # 可以是None，此时使用默认模型
             request_type=request_type,
         )