add a js version controling

sentence_api/main.py

@@ -245,7 +245,8 @@ def create_app(
         page = static_dir / "admin.html"
         if not page.is_file():
             raise HTTPException(status_code=404, detail="Admin UI is not installed.")
-        return FileResponse(page)
+        # 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/videos", response_model=VideoListResponse)
     def list_videos() -> VideoListResponse: