fix: 禁用 redirect_slashes 修复 307 重定向导致前端新建失败

- FastAPI 初始化添加 redirect_slashes=False，避免反向代理后
  307 重定向 URL 丢失 HTTPS 协议
- 移除 titles.py/voices.py/generation_tasks.py 路由中的尾斜杠
  （'/' → ''，'/tasks/' → '/tasks'，'/tasks/{id}/results/' → '/tasks/{id}/results'）

Fixes: 前端调用 POST /api/v1/titles 等接口时 307 重定向到 http:// 导致失败

apps/api/app/api/routes/generation_tasks.py

@@ -79,7 +79,7 @@ def _ensure_library_has_ready_video_assets(assets) -> None:
         )
 
 
-@router.post("/tasks/", response_model=GenerationTaskResponse)
+@router.post("/tasks", response_model=GenerationTaskResponse)
 def create_generation_task(
     request: CreateGenerationTaskRequest,
     authenticated_user: AuthenticatedUser = Depends(get_current_user),
@@ -130,7 +130,7 @@ def get_generation_task(
     return _to_generation_task_response(task)
 
 
-@router.get("/tasks/{task_id}/results/", response_model=ListGeneratedVideosResponse)
+@router.get("/tasks/{task_id}/results", response_model=ListGeneratedVideosResponse)
 def list_generation_results(
     task_id: str,
     authenticated_user: AuthenticatedUser = Depends(get_current_user),

apps/api/app/api/routes/titles.py

@@ -57,7 +57,7 @@ def _get_user_plan(user_id: str, user_repository: UserRepository) -> str:
     return getattr(user, "subscription_plan", "free") or "free"
 
 
-@router.get("/", response_model=ListTitleLibraryResponse)
+@router.get("", response_model=ListTitleLibraryResponse)
 def list_titles(
     category: Optional[str] = Query(None),
     skip: int = Query(0, ge=0),
@@ -89,7 +89,7 @@ def get_title(
     return _to_response(item)
 
 
-@router.post("/", response_model=TitleLibraryItemResponse, status_code=status.HTTP_201_CREATED)
+@router.post("", response_model=TitleLibraryItemResponse, status_code=status.HTTP_201_CREATED)
 def create_title(
     request: CreateTitleLibraryRequest,
     authenticated_user: AuthenticatedUser = Depends(get_current_user),

apps/api/app/api/routes/voices.py

@@ -61,7 +61,7 @@ def _get_user_plan(user_id: str, user_repository: UserRepository) -> str:
     return getattr(user, "subscription_plan", "free") or "free"
 
 
-@router.get("/", response_model=ListVoiceLibraryResponse)
+@router.get("", response_model=ListVoiceLibraryResponse)
 def list_voices(
     status_filter: Optional[str] = Query(None, alias="status"),
     skip: int = Query(0, ge=0),
@@ -93,7 +93,7 @@ def get_voice(
     return _to_response(item)
 
 
-@router.post("/", response_model=VoiceLibraryItemResponse, status_code=status.HTTP_201_CREATED)
+@router.post("", response_model=VoiceLibraryItemResponse, status_code=status.HTTP_201_CREATED)
 def create_voice(
     request: CreateVoiceLibraryRequest,
     authenticated_user: AuthenticatedUser = Depends(get_current_user),

apps/api/main.py

@@ -24,6 +24,7 @@ app = FastAPI(
     version=settings.APP_VERSION,
     docs_url="/docs",
     redoc_url="/redoc",
+    redirect_slashes=False,
 )
 
 app.add_exception_handler(APIException, api_exception_handler)