fix: black格式 + isort排序

apps/api/app/api/routes/_helpers.py

@@ -124,6 +124,7 @@ def auto_select_video_assets(
     filtered_videos.sort(key=lambda a: a.created_at, reverse=True)
     return [a.id for a in filtered_videos]
 
+
 def format_utc_datetime(dt: datetime | None) -> str:
     """将数据库读出的 UTC naive datetime 格式化为带时区的 ISO 8601 字符串。
 

apps/api/app/api/routes/videos.py

@@ -1,5 +1,6 @@
 import logging
 
+from app.api.routes._helpers import format_utc_datetime
 from app.auth import AuthenticatedUser, get_current_user
 from app.core.celery_app import celery_app
 from app.core.storage import OSSStorageService, get_storage_service
@@ -15,7 +16,6 @@ from app.schemas.video_center import (
 )
 from fastapi import APIRouter, Depends, HTTPException, Query, Response
 
-from app.api.routes._helpers import format_utc_datetime
 from packages.application import (
     GetGeneratedVideoUseCase,
     GetVideosByIdsUseCase,