Fix/release memory bug (#306)

* memory_BUG_fix

* memory_BUG

* memory_BUG_long_term

* memory_BUG_long_term

* memory_BUG_long_term

api/app/services/draft_run_service.py

@@ -110,6 +110,8 @@ def create_long_term_memory_tool(memory_config: Dict[str, Any], end_user_id: str
                 result = task_service.get_task_memory_read_result(task.id)
                 status = result.get("status")
                 logger.info(f"读取任务状态：{status}")
+                if memory_content:
+                    memory_content = memory_content['answer']
 
             finally:
                 db.close()
@@ -123,7 +125,6 @@ def create_long_term_memory_tool(memory_config: Dict[str, Any], end_user_id: str
                     "content_length": len(str(memory_content))
                 }
             )
-
             return f"检索到以下历史记忆：\n\n{memory_content}"
         except Exception as e:
             logger.error("长期记忆检索失败", extra={"error": str(e), "error_type": type(e).__name__})