改各种小问题

src/plugins/PFC/observation_info.py

@@ -120,6 +120,10 @@ class ObservationInfo:
     # #spec
     # meta_plan_trigger: bool = False
 
+    def __init__(self):
+        self.last_message_id = None
+        self.chat_observer = None
+
     def __post_init__(self):
         """初始化后创建handler"""
         self.chat_observer = None
@@ -129,7 +133,7 @@ class ObservationInfo:
         """绑定到指定的chat_observer
 
         Args:
-            stream_id: 聊天流ID
+            chat_observer: 要绑定的ChatObserver实例
         """
         self.chat_observer = chat_observer
         self.chat_observer.notification_manager.register_handler(
@@ -171,7 +175,8 @@ class ObservationInfo:
             self.last_bot_speak_time = message["time"]
         else:
             self.last_user_speak_time = message["time"]
-            self.active_users.add(user_info.user_id)
+            if user_info.user_id is not None:
+                self.active_users.add(str(user_info.user_id))
 
         self.new_messages_count += 1
         self.unprocessed_messages.append(message)
@@ -227,7 +232,7 @@ class ObservationInfo:
         """清空未处理消息列表"""
         # 将未处理消息添加到历史记录中
         for message in self.unprocessed_messages:
-            self.chat_history.append(message)
+            self.chat_history.append(message) # TODO NEED FIX TYPE???
         # 清空未处理消息列表
         self.has_unread_messages = False
         self.unprocessed_messages.clear()