diff --git a/apps/api/app/schemas/viral_video.py b/apps/api/app/schemas/viral_video.py
index 85fb13074..1d16bf1fb 100755
--- a/apps/api/app/schemas/viral_video.py
+++ b/apps/api/app/schemas/viral_video.py
@@ -6,7 +6,6 @@ from datetime import datetime
 
 from pydantic import BaseModel, Field, field_validator
 
-
 # ── 枚举常量 ─────────────────────────────────────────────────────────────
 
 VALID_FUSION_LEVELS = ("ai_full", "ai_polish", "user_primary")
diff --git a/apps/worker/worker_app/tasks/viral_video.py b/apps/worker/worker_app/tasks/viral_video.py
index 7437d20ad..a904e0fd3 100755
--- a/apps/worker/worker_app/tasks/viral_video.py
+++ b/apps/worker/worker_app/tasks/viral_video.py
@@ -19,9 +19,9 @@ from __future__ import annotations
 import logging
 import os
 
-from celery import Task
+from celery import Task, shared_task
 from celery.exceptions import Retry
-from worker_app.celery_app import celery_app
+from worker_app.celery_app import celery_app  # noqa: F401 - 加载 app 以注册任务
 from worker_app.db import SessionLocal
 
 from packages.adapters.sqlalchemy_impl.viral_video_repository import (
@@ -313,8 +313,8 @@ def _step_bgm_select(job: ViralVideoJob) -> str:
 def _step_render(job: ViralVideoJob, storyboard: list[dict], audio_url: str, bgm: str) -> str:
     """步骤 8: UnifiedRenderService 渲染。"""
     try:
-        from video_processing.unified_render_service import UnifiedRenderService
         from video_processing.render_adapter import build_render_plan
+        from video_processing.unified_render_service import UnifiedRenderService
 
         render_plan = build_render_plan(
             images=job.images,
@@ -379,7 +379,7 @@ def _step_upload(job: ViralVideoJob, video_path: str) -> str:
 # ── 主编排器 ────────────────────────────────────────────────────────────
 
 
-@celery_app.task(bind=True, max_retries=2, name="worker.run_viral_video_pipeline")
+@shared_task(bind=True, max_retries=2, name="worker.run_viral_video_pipeline")
 def run_viral_video_pipeline(self: Task, job_id: str) -> dict:
     """爆款视频 10 步流水线编排器。"""
     session = None
@@ -452,7 +452,7 @@ def run_viral_video_pipeline(self: Task, job_id: str) -> dict:
             session.close()
 
 
-@celery_app.task(bind=True, max_retries=2, name="worker.resume_viral_video_pipeline")
+@shared_task(bind=True, max_retries=2, name="worker.resume_viral_video_pipeline")
 def resume_viral_video_pipeline(self: Task, job_id: str) -> dict:
     """用户确认意图后，从断点恢复流水线（步骤 3-10）。"""
     session = None
@@ -539,7 +539,7 @@ def resume_viral_video_pipeline(self: Task, job_id: str) -> dict:
             session.close()
 
 
-@celery_app.task(bind=True, max_retries=1, name="worker.run_video_style_analysis")
+@shared_task(bind=True, max_retries=1, name="worker.run_video_style_analysis")
 def run_video_style_analysis(self: Task, job_id: str) -> dict:
     """独立的视频风格分析任务（v1.3）。"""
     session = None
diff --git a/packages/adapters/sqlalchemy_impl/viral_video_repository.py b/packages/adapters/sqlalchemy_impl/viral_video_repository.py
index 00c64670a..2887b3dd7 100755
--- a/packages/adapters/sqlalchemy_impl/viral_video_repository.py
+++ b/packages/adapters/sqlalchemy_impl/viral_video_repository.py
@@ -6,8 +6,8 @@ from sqlalchemy.orm import Session
 
 from packages.adapters.sqlalchemy_impl.models import (
     ViralVideoJobModel,
-    ViralVideoStyleTemplateModel,
     ViralVideoPromptTemplateModel,
+    ViralVideoStyleTemplateModel,
 )
 from packages.domain.viral_video import ViralVideoJob, ViralVideoStatus
 
diff --git a/packages/domain/viral_video.py b/packages/domain/viral_video.py
index c9fdfae6c..0bdf789aa 100755
--- a/packages/domain/viral_video.py
+++ b/packages/domain/viral_video.py
@@ -9,7 +9,6 @@
 
 from __future__ import annotations
 
-
 import sys
 from dataclasses import dataclass, field
 from datetime import datetime, timezone
diff --git a/tests/unit/test_viral_video.py b/tests/unit/test_viral_video.py
index 541f4a2b6..3f416ca3c 100755
--- a/tests/unit/test_viral_video.py
+++ b/tests/unit/test_viral_video.py
@@ -13,9 +13,8 @@ from __future__ import annotations
 from datetime import datetime, timezone
 from unittest.mock import MagicMock, patch
 
-from pydantic import ValidationError
-
 import pytest
+from pydantic import ValidationError
 
 from packages.domain.viral_video import (
     CREDITS_VIRAL_VIDEO_COST,
@@ -27,7 +26,6 @@ from packages.domain.viral_video import (
     ViralVideoStatus,
 )
 
-
 # ── 领域模型测试 ─────────────────────────────────────────────────────────
 
 
@@ -326,10 +324,10 @@ class TestViralVideoRepository:
         assert repo.count_pending_by_user("user-001") == 2
 
     def test_style_template_repo(self, db_session):
+        from packages.adapters.sqlalchemy_impl.models import ViralVideoStyleTemplateModel
         from packages.adapters.sqlalchemy_impl.viral_video_repository import (
             SQLAlchemyViralVideoStyleTemplateRepository,
         )
-        from packages.adapters.sqlalchemy_impl.models import ViralVideoStyleTemplateModel
 
         # 插入模板
         tpl = ViralVideoStyleTemplateModel(