{
 "note": "实测同一构建两轮：mean<=0.00174, 单像素最大差 12, 无像素差>8。阈值取约 10x 余量；超过即视为真实渲染回归。",
 "mean_max": 0.02,
 "pixel_max": 32,
 "views": {
  "harness_xray_internal": {
   "mean": 0.00087,
   "mx": 6
  },
  "harness_p07_xray": {
   "mean": 0.00097,
   "mx": 5
  },
  "harness_p04_p05_xray": {
   "mean": 0.00174,
   "mx": 12
  }
 }
}