{
  "simulated": true,
  "providerRequests": 0,
  "locale": "zh",
  "notice": "使用保留域名编写的虚构示例。未连接供应商，也未验证当前链接。",
  "stages": [
    {
      "id": "discovery",
      "title": "发现",
      "input": "候选URL与已知引用。",
      "output": "待尝试访问的页面队列。",
      "limit": "未被发现的页面也可能存在真实链接。"
    },
    {
      "id": "access",
      "title": "访问",
      "input": "队列中的URL和抓取许可。",
      "output": "响应、重定向或失败请求。",
      "limit": "访问失败不能证明链接已删除。"
    },
    {
      "id": "extraction",
      "title": "提取",
      "input": "页面可访问的表示形式。",
      "output": "报告的来源与目标引用及属性。",
      "limit": "渲染支持和提取规则因供应商而异。"
    },
    {
      "id": "normalization",
      "title": "规范化",
      "input": "提取的URL及重复观察。",
      "output": "供应商自身的分组或去重结果。",
      "limit": "不要假定不同来源采用同一计数单位。"
    },
    {
      "id": "storage",
      "title": "存储与复查",
      "input": "带时间戳的观察。",
      "output": "历史记录及后续观察。",
      "limit": "最后一次成功观察可能已经过时。"
    },
    {
      "id": "reporting",
      "title": "报告与导出",
      "input": "存储记录、范围和筛选条件。",
      "output": "选定表格、样本或下载文件。",
      "limit": "导出不是整个互联网完整且实时的地图。"
    }
  ],
  "cases": [
    {
      "id": "unobserved",
      "observedAt": null,
      "attemptedAt": null,
      "fetchStatus": null,
      "currentPresence": null,
      "removed": null,
      "sourceUrl": "https://publisher.example/unobserved",
      "targetUrl": "https://target.example/resource",
      "title": "没有观察",
      "facts": "虚构索引没有这一来源的观察。这里没有检查真实页面。",
      "next": "先调查发现与覆盖范围，再判断链接是否不存在。"
    },
    {
      "id": "stale",
      "observedAt": "2026-01-10T09:00:00Z",
      "attemptedAt": null,
      "fetchStatus": null,
      "currentPresence": null,
      "removed": null,
      "sourceUrl": "https://publisher.example/stale",
      "targetUrl": "https://target.example/resource",
      "title": "旧观察",
      "facts": "示例在1月10日被观察，1月14日导出。没有记录新的成功检查。",
      "next": "保留观察日期；新导出的文件不能证明当前仍存在。"
    },
    {
      "id": "failed",
      "observedAt": "2026-01-10T09:00:00Z",
      "attemptedAt": "2026-01-14T09:00:00Z",
      "fetchStatus": 503,
      "currentPresence": null,
      "removed": null,
      "sourceUrl": "https://publisher.example/failed",
      "targetUrl": "https://target.example/resource",
      "title": "复查失败",
      "facts": "先前观察之后，示例复查返回HTTP 503。这个响应不能确认引用已被移除。",
      "next": "通过正常授权流程重新检查，并单独保留先前证据。"
    }
  ]
}