{"success":true,"url":"https://scckuvmyfa.55123a.app:39084","favicon":"https://scckuvmyfa.55123a.app:39084/favicon.ico","size":"32x32","source":"direct","cached":true,"cachedAt":"2026-09-17T21:17:01.247Z","cacheSource":"kv","error":"图片下载失败，已回退到JSON格式: Empty image response","imageDownloadFailed":true}