{
  "layer": "offline/material checks, not proof of unrun product or model",
  "checks": [
    "three original chapters",
    "source/reference contain 背景声",
    "source/reference contain 脚步声",
    "source/reference contain 交通声",
    "missing branch rejected",
    "manual reference is not mislabeled as product output"
  ],
  "count": 6
}