fix ruff

src/chat/utils/chat_message_builder.py

@@ -252,7 +252,7 @@ def _build_readable_messages_internal(
     pic_id_mapping: Optional[Dict[str, str]] = None,
     pic_counter: int = 1,
     show_pic: bool = True,
-    message_id_list: List[Dict[str, Any]] = [],
+    message_id_list: List[Dict[str, Any]] = None,
 ) -> Tuple[str, List[Tuple[float, str, str]], Dict[str, str], int]:
     """
     内部辅助函数，构建可读消息字符串和原始消息详情列表。
@@ -697,7 +697,7 @@ def build_readable_messages(
     truncate: bool = False,
     show_actions: bool = False,
     show_pic: bool = True,
-    message_id_list: List[Dict[str, Any]] = [],
+    message_id_list: List[Dict[str, Any]] = None,
 ) -> str:  # sourcery skip: extract-method
     """
     将消息列表转换为可读的文本格式。