diff --git a/apps/worker/video_processing/__init__.py b/apps/worker/video_processing/__init__.py
index 7012f2e1c..af9b6b47d 100755
--- a/apps/worker/video_processing/__init__.py
+++ b/apps/worker/video_processing/__init__.py
@@ -5,8 +5,8 @@
 # 共享工具模块（供 editing_modes / generation / edit_plan_generation 等复用）
 from . import dedup_helpers, ffmpeg_utils, oss_helpers
 from .processor import VideoProcessor, VideoResult
-from .unified_render_service import RenderResult, UnifiedRenderService
 from .render_adapter import RenderAdapter, RenderAdapterResult
+from .unified_render_service import RenderResult, UnifiedRenderService
 
 __all__ = [
     "VideoProcessor",
diff --git a/apps/worker/video_processing/render_adapter.py b/apps/worker/video_processing/render_adapter.py
index 8e0635391..69d517ac3 100755
--- a/apps/worker/video_processing/render_adapter.py
+++ b/apps/worker/video_processing/render_adapter.py
@@ -20,6 +20,11 @@ from pathlib import Path
 from typing import Any, Callable
 
 from sqlalchemy.orm import Session
+from video_processing.oss_helpers import download_asset, upload_to_oss
+from video_processing.unified_render_service import (
+    RenderResult,
+    UnifiedRenderService,
+)
 
 from packages.adapters.sqlalchemy_impl.edit_plan_clip_repository import (
     SQLAlchemyEditPlanClipRepository,
@@ -29,11 +34,6 @@ from packages.adapters.sqlalchemy_impl.edit_plan_repository import (
 )
 from packages.domain.edit_plan import EditPlan, EditPlanStatus
 from packages.domain.edit_plan_clip import EditPlanClip, EditPlanClipStatus
-from video_processing.oss_helpers import download_asset, upload_to_oss
-from video_processing.unified_render_service import (
-    RenderResult,
-    UnifiedRenderService,
-)
 
 logger = logging.getLogger(__name__)
 
diff --git a/tests/unit/test_render_adapter.py b/tests/unit/test_render_adapter.py
index 706075a4e..6f1e05a8e 100755
--- a/tests/unit/test_render_adapter.py
+++ b/tests/unit/test_render_adapter.py
@@ -13,7 +13,6 @@ from unittest.mock import MagicMock, patch
 import pytest
 from video_processing.render_adapter import RenderAdapter, RenderAdapterResult
 
-
 # ── Fixtures ──────────────────────────────────────────────────────────────────
 
 
@@ -243,6 +242,7 @@ class TestRenderPlan:
     @patch("video_processing.render_adapter.download_asset")
     def test_successful_render(self, mock_download, mock_render_cls, mock_upload, tmp_path):
         """完整渲染流程成功。"""
+
         # 素材下载成功
         def _fake_download(asset_id, local_path):
             local_path.parent.mkdir(parents=True, exist_ok=True)
@@ -295,6 +295,7 @@ class TestRenderPlan:
     @patch("video_processing.render_adapter.download_asset")
     def test_progress_callback(self, mock_download, tmp_path):
         """进度回调被正确触发。"""
+
         def _fake_download(asset_id, local_path):
             local_path.parent.mkdir(parents=True, exist_ok=True)
             local_path.write_bytes(b"fake data")