{"success":true,"url":"https://localhost:5173","favicon":"https://www.google.com/s2/favicons?domain=localhost&sz=32","size":"32x32","source":"google","cached":true,"cachedAt":"2026-03-31T10:03:54.965Z","cacheSource":"kv","error":"图片下载失败，已回退到JSON格式: Failed to fetch image: 404","imageDownloadFailed":true}