{
  "schema_version": "muse-fixture-chinese-prose-v1",
  "来源": "合成样例；无真实作品内容",
  "合同": "docs/系统架构/新版设计/接口契约/正文结构与中文选区.md",
  "位置语义": "start/end 按 Unicode 码点、左闭右开区间计数",
  "samples": [
    {
      "sample_id": "zh-combining-emoji",
      "保护点": "组合字符（e+U+0301）、肤色修饰 emoji、ZWJ 序列不被规范化",
      "paragraphs": [
        "他写下最后一个字， café́ 的灯光下，念作「卡非」。🧑‍🏽 点了点头。"
      ],
      "preserved_expectations": [
        "段内包含字符 e 与组合分音符 U+0301 分离存储，不得合并为 é",
        "emoji 家族/肤色序列按原码点序列保留",
        "全角引号「」与全角标点原样保留"
      ],
      "codepoint_lengths": [
        37
      ],
      "selections": [
        {
          "paragraph_index": 0,
          "start": 10,
          "end": 15,
          "expected_text": "café́"
        },
        {
          "paragraph_index": 0,
          "start": 28,
          "end": 31,
          "expected_text": "🧑‍🏽"
        }
      ]
    },
    {
      "sample_id": "zh-blank-lines",
      "保护点": "连续空行、段首全角空格、行尾空白在导入/保存/导出中保持",
      "paragraphs": [
        "第一段结束。",
        "",
        "",
        "　第二段有全角空格开头。",
        "第三段。"
      ],
      "preserved_expectations": [
        "空段落数量与位置不变（第 2、3 段为空段落）",
        "段首全角空格 U+3000 不被剥离"
      ],
      "codepoint_lengths": null
    },
    {
      "sample_id": "zh-duplicate-sentence",
      "保护点": "重复片段不能按任意首次命中替换",
      "paragraphs": [
        "他把剑收回鞘中。风停了。他把剑收回鞘中，转身离开。"
      ],
      "preserved_expectations": [
        "第二次出现的「他把剑收回鞘中」不因对第一次的替换而改变"
      ],
      "duplicate_spans": [
        {
          "paragraph_index": 0,
          "start": 0,
          "end": 7,
          "expected_text": "他把剑收回鞘中"
        },
        {
          "paragraph_index": 0,
          "start": 12,
          "end": 24,
          "expected_text": "他把剑收回鞘中，转身离开"
        }
      ],
      "selections": [
        {
          "paragraph_index": 0,
          "start": 8,
          "end": 11,
          "expected_text": "风停了"
        }
      ]
    },
    {
      "sample_id": "zh-cross-paragraph-selection",
      "保护点": "跨段选区显式表达受影响段落，不能折叠为整章偏移",
      "paragraphs": [
        "这句话结束于第一段末尾，",
        "第二段从这里开始。"
      ],
      "cross_selection": {
        "from": {
          "paragraph_index": 0,
          "start": 9,
          "end": 12
        },
        "to": {
          "paragraph_index": 1,
          "start": 0,
          "end": 4
        },
        "expected_from_text": "末尾，",
        "expected_to_text": "第二段从"
      }
    },
    {
      "sample_id": "zh-fullwidth-variants",
      "保护点": "全角标点、破折号、兼容异体字不被自动规范化",
      "paragraphs": [
        "『你确定？』她问——用的是「旧式」引号，和一个 炙 类兼容异体字。"
      ],
      "preserved_expectations": [
        "『』「」—— 及兼容异体字 U+F9FB 原样保留",
        "正文规范化必须是显式编辑操作，不是保存副作用"
      ],
      "selections": [
        {
          "paragraph_index": 0,
          "start": 0,
          "end": 6,
          "expected_text": "『你确定？』"
        }
      ]
    }
  ]
}