feat:历史记录关于user_id限制

backend/db/crud.py

@@ -64,11 +64,15 @@ class MultiAgentTaskCRUD:
 
     @staticmethod
     def get_recent(
-        db: Session, limit: int = 20, offset: int = 0
+        db: Session, limit: int = 20, offset: int = 0, user_id: str = None
     ) -> List[MultiAgentTask]:
         """获取最近的任务记录，置顶的排在最前面"""
+        query = db.query(MultiAgentTask)
+        # 按 user_id 过滤
+        if user_id:
+            query = query.filter(MultiAgentTask.user_id == user_id)
         return (
-            db.query(MultiAgentTask)
+            query
             .order_by(MultiAgentTask.is_pinned.desc(), MultiAgentTask.created_at.desc())
             .offset(offset)
             .limit(limit)