#454 剪辑计划生成状态接口video_url改为签名URL

- 注入storage_service，对rendered_url调用get_download_url生成OSS签名URL
- 签名过期时间24小时
- 签名失败时降级返回原始URL，不阻断主流程

apps/api/app/api/routes/edit_plans_generation.py

@@ -19,6 +19,7 @@ from app.api.routes.edit_plans import (
     EditPlanGenerationStatusResponse,
 )
 from app.auth import AuthenticatedUser, get_current_user
+from app.core.storage import OSSStorageService, get_storage_service
 from app.core.celery_app import celery_app
 from app.core.task_enqueue import GLOBAL_PENDING_LIMIT, USER_PENDING_LIMIT
 from app.dependencies import get_asset_library_repository, get_asset_repository, get_db_session, get_project_repository
@@ -308,6 +309,7 @@ def get_generation_status(
     db: Session = Depends(get_db_session),
     current_user: AuthenticatedUser = Depends(get_current_user),
     project_repository: Any = Depends(get_project_repository),
+    storage_service: OSSStorageService = Depends(get_storage_service),
 ) -> EditPlanGenerationStatusResponse:
     """查询剪辑计划生成进度"""
     svc = EditPlanService(db)
@@ -334,8 +336,15 @@ def get_generation_status(
         for c in clips
     ]
 
-    # 从 plan.config 中取渲染结果 URL
-    video_url = (plan.config or {}).get("rendered_url", "")
+    # 从 plan.config 中取渲染结果 URL，转换为签名 URL
+    raw_video_url = (plan.config or {}).get("rendered_url", "")
+    video_url = ""
+    if raw_video_url:
+        try:
+            video_url = storage_service.get_download_url(raw_video_url, expires_seconds=86400)
+        except Exception as e:
+            logger.warning("生成视频签名URL失败，返回原始URL: plan_id=%s error=%s", plan_id, e)
+            video_url = raw_video_url
     # 从 gen_status 中取进度、错误信息、任务状态
     progress = gen_status.get("progress", 0.0)
     error_message = gen_status.get("error_message", "")