区分上传文件与创建项目设计系统的两阶段回执

{
  "inputRows": [
    {
      "kind": "colors",
      "primary": "#184A45",
      "surface": "#F7F4EC"
    },
    {
      "kind": "typography",
      "body": "16px/1.6 Arial"
    },
    {
      "kind": "component",
      "button": "primary background, white text"
    }
  ],
  "referenceRows": [
    {
      "stage": 1,
      "artifact": "uploaded sourceScreen + screenInstance"
    },
    {
      "stage": 2,
      "artifact": "design system assets/{assetId}"
    },
    {
      "stage": 3,
      "artifact": "screen consumes confirmed tokens"
    }
  ],
  "invalidRows": [
    {
      "claim": "uploaded file means system exists",
      "error": "second stage missing"
    },
    {
      "assetId": "sourceScreen ID",
      "error": "wrong resource kind"
    }
  ],
  "notes": [
    "全部输入为作者自制教学资料，不含真实客户或账号。",
    "referenceRows是校验基准，不是目标模型预测或识别结果；targetProduct=not_run。"
  ],
  "files": {
    "input.json": "[\n  {\n    \"kind\": \"colors\",\n    \"primary\": \"#184A45\",\n    \"surface\": \"#F7F4EC\"\n  },\n  {\n    \"kind\": \"typography\",\n    \"body\": \"16px/1.6 Arial\"\n  },\n  {\n    \"kind\": \"component\",\n    \"button\": \"primary background, white text\"\n  }\n]\n",
    "reference.json": "{\n  \"identity\": \"作者验收参考，非模型返回\",\n  \"rows\": [\n    {\n      \"stage\": 1,\n      \"artifact\": \"uploaded sourceScreen + screenInstance\"\n    },\n    {\n      \"stage\": 2,\n      \"artifact\": \"design system assets/{assetId}\"\n    },\n    {\n      \"stage\": 3,\n      \"artifact\": \"screen consumes confirmed tokens\"\n    }\n  ]\n}\n",
    "invalid.json": "{\n  \"identity\": \"作者构造负例，非实际错误回包\",\n  \"rows\": [\n    {\n      \"claim\": \"uploaded file means system exists\",\n      \"error\": \"second stage missing\"\n    },\n    {\n      \"assetId\": \"sourceScreen ID\",\n      \"error\": \"wrong resource kind\"\n    }\n  ]\n}\n",
    "case.md": "# Stitch导入DESIGN.md：区分上传文件与创建项目设计系统的两阶段回执\n\nStitch导入DESIGN.md先上传文件，再通过其screen instance创建设计系统。本课明确两步的不同产物，避免文件出现在画布后就误以为后续页面已经受规范控制。\n\n## 校验设计文件\n\n用官方alpha schema准备主色、排版和组件规范，记录摘要。\n\n先在本地lint，不把无效规范上传后交给云端猜测。\n\n## 核对目标项目\n\n查看projectId和项目现有设计系统清单。\n\n已有同用途系统时先确定更新对象，不连续创建同名资产。\n\n## 上传规范文件\n\n按官方upload-to-stitch流程上传DESIGN.md并保存返回。\n\n小文件可按当前工具schema使用upload_design_md，较大文件读取官方脚本流程。\n\n## 创建设计系统资产\n\n将上传返回的selectedScreenInstance交给create_design_system_from_design_md。\n\n上传成功不代替这一步，失败时保留文件与错误供重试判断。\n\n## 查回资产身份\n\n读取设计系统清单，记录assets/{assetId}中的实际assetId。\n\n文件screen身份和设计资产身份分开，不互相替代。\n\n## 检查新页面消费\n\n在隔离项目生成一张简单卡片或选择目标页面应用规范。\n\n比较实际色值和字体，规范存在并不保证每个像素都已遵守。\n\n## 保存两阶段证据\n\n交付本地规范、上传回执、设计系统回执和消费页面。\n\n尚未执行的云端步骤标not_run，避免只交作者预览当官方结果。\n\n身份：输入与参考为作者材料；localCli有实测记录时仅证明对应CLI运行，目标云端与模型推理未执行。\n",
    "DESIGN.md": "---\nversion: alpha\nname: Field Kit\ncolors:\n  primary: \"#184A45\"\n  surface: \"#F7F4EC\"\ntypography:\n  body-md:\n    fontFamily: Arial\n    fontSize: 16px\n    fontWeight: 400\n    lineHeight: 1.6\nrounded:\n  sm: 8px\nspacing:\n  sm: 8px\ncomponents:\n  button-primary:\n    backgroundColor: \"{colors.primary}\"\n    textColor: \"#FFFFFF\"\n    typography: \"{typography.body-md}\"\n    rounded: \"{rounded.sm}\"\n    padding: \"{spacing.sm}\"\n---\n## Overview\nField Kit的预约界面。\n## Colors\n主色用于主要操作。\n## Typography\n正文使用body-md。\n## Layout\n使用8px间距。\n## Shapes\n使用8px圆角。\n## Components\n主要按钮统一消费语义引用。\n"
  }
}