{
  "schema": 1,
  "updatedAt": "preview-fixture",
  "chapters": [
    {
      "id": "qi-4-6",
      "version": "0.1.0-preview",
      "title": "筑基前夜",
      "summary": "首章之后的 CDN 章节样例。这里验证清单、章节包、缓存和失败重试流程。",
      "pack": "chapters/qi-4-6/pack.json",
      "available": true
    }
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}