ExportArticleResult

{
    "success": true,
    "id": "10001",
    "url": "https://pub-xxxxxx.r2.dev/articles/10001.html",
    "r2_url": "https://pub-xxxxxx.r2.dev/articles/10001.html",
    "r2_key": "articles/10001.html",
    "pointsCost": 1,
    "pointsBalance": 99
}