更新

backend/app/api/materials.py

@@ -9,6 +9,10 @@ import os
 import aiofiles
 from pathlib import Path
 from loguru import logger
+from pydantic import BaseModel
+from typing import Optional
+import httpx
+
 
 router = APIRouter()
 
@@ -329,3 +333,6 @@ async def delete_material(material_id: str, current_user: dict = Depends(get_cur
         return {"success": True, "message": "素材已删除"}
     except Exception as e:
         raise HTTPException(500, f"删除失败: {str(e)}")
+
+
+