{
  "_doc": "P3 mock fixture · work graph 里的 wg-build 节点本体。被 wg-check 回退时会再跑一次（attempt+1），fixture 用 {attempt} 占位符跨轮复用同一份，不需要 sequence。",
  "chunks": [
    "[mock] sdd-planning 读 prd.md 与上一轮 remediation_note（若有）。\n",
    "产出设计与实现，写 sdd.md + contract.json。\n"
  ],
  "result": "mock-ok sdd-planning：已产出 sdd.md 与 contract.json。",
  "files": [
    {
      "path": "attempt-{attempt}.json",
      "content": "{\n  \"schema\": \"validator-triager/v1\",\n  \"verdict\": \"no_prior_failure\",\n  \"fail_reason\": null,\n  \"remediation_note\": null\n}\n"
    },
    {
      "path": "sdd.md",
      "content": "# SDD（mock）\n\n单模块实现，对外暴露一个函数，错误输入返回明确错误。\n"
    },
    {
      "path": "contract.json",
      "content": "{\n  \"exports\": {\n    \"fn\": [\n      { \"name\": \"handle\", \"input\": \"string\", \"output\": \"string\" }\n    ]\n  }\n}\n"
    }
  ]
}