添加长期存储，流式检查

app/nodes/summarize.py

@@ -24,13 +24,15 @@ def create_summarize_node(mem0_client: Mem0Client):
         异步节点函数
     """
     
-    async def summarize_conversation(state: MessagesState, runtime: Runtime[GraphContext]) -> Dict[str, Any]:
+    from langchain_core.runnables.config import RunnableConfig
+    
+    async def summarize_conversation(state: MessagesState, config: RunnableConfig) -> Dict[str, Any]:
         """
         记忆存储节点 - 使用 Mem0
         
         Args:
             state: 当前对话状态
-            runtime: LangGraph 运行时上下文
+            config: 运行时配置
             
         Returns:
             重置计数器的状态更新
@@ -42,7 +44,8 @@ def create_summarize_node(mem0_client: Mem0Client):
             debug("📝 [记忆添加] 对话过短，跳过")
             return {"turns_since_last_summary": 0}
 
-        user_id = runtime.context.user_id
+        # 从 metadata 中获取 user_id
+        user_id = config.get("metadata", {}).get("user_id", "default_user")
 
         # 确保 Mem0 已初始化（懒加载）
         if not mem0_client._initialized:
@@ -83,4 +86,4 @@ def create_summarize_node(mem0_client: Mem0Client):
         log_state_change("summarize", state, "离开")
         return {"turns_since_last_summary": 0}
     
-    return summarize_conversation
+    return summarize_conversation