add admin user management: list and delete registered users

sentence_api/main.py

@@ -43,6 +43,7 @@ from .models import (
     UserDubShareSummary,
     UserPublic,
     UserResultSummary,
+    UserAdminListResponse,
     VideoDetailResponse,
     VideoListResponse,
     VideoSummary,
@@ -249,6 +250,26 @@ def create_app(
         # 后台页面本身不缓存，静态 JS 通过版本号刷新，避免发布后浏览器继续跑旧逻辑。
         return FileResponse(page, headers={"Cache-Control": "no-cache"})
 
+    @application.get(
+        "/api/v1/admin/users",
+        response_model=UserAdminListResponse,
+        dependencies=[Depends(require_admin)],
+    )
+    def list_registered_users() -> UserAdminListResponse:
+        return UserAdminListResponse(
+            users=video_repository.list_users()
+        )
+
+    @application.delete("/api/v1/admin/users/{user_id}", status_code=204)
+    def delete_registered_user(
+        user_id: str,
+        _: None = Depends(require_admin),
+    ) -> Response:
+        deleted = video_repository.delete_user(user_id)
+        if not deleted:
+            raise HTTPException(status_code=404, detail="User was not found.")
+        return Response(status_code=204)
+
     @application.get("/api/v1/videos", response_model=VideoListResponse)
     def list_videos() -> VideoListResponse:
         return VideoListResponse(