{"success":true,"url":"https://www.zhaodede.com","favicon":"https://www.zhaodede.com/favicon.ico","size":"32x32","source":"html","cached":true,"cachedAt":"2026-06-13T17:19:03.317Z","cacheSource":"kv","error":"图片下载失败，已回退到JSON格式: Empty image response","imageDownloadFailed":true}