feat:1.历史记录重构UI重构2.置顶功能实现

backend/db/crud.py

@@ -66,10 +66,10 @@ class MultiAgentTaskCRUD:
     def get_recent(
         db: Session, limit: int = 20, offset: int = 0
     ) -> List[MultiAgentTask]:
-        """获取最近的任务记录"""
+        """获取最近的任务记录，置顶的排在最前面"""
         return (
             db.query(MultiAgentTask)
-            .order_by(MultiAgentTask.created_at.desc())
+            .order_by(MultiAgentTask.is_pinned.desc(), MultiAgentTask.created_at.desc())
             .offset(offset)
             .limit(limit)
             .all()
@@ -184,6 +184,18 @@ class MultiAgentTaskCRUD:
             db.refresh(task)
         return task
 
+    @staticmethod
+    def update_is_pinned(
+        db: Session, task_id: str, is_pinned: bool
+    ) -> Optional[MultiAgentTask]:
+        """更新任务置顶状态"""
+        task = db.query(MultiAgentTask).filter(MultiAgentTask.task_id == task_id).first()
+        if task:
+            task.is_pinned = is_pinned
+            db.commit()
+            db.refresh(task)
+        return task
+
     @staticmethod
     def append_rehearsal_log(
         db: Session, task_id: str, log_entry: dict