{
  "phase": "A_synthetic",
  "epoch": 12,
  "summary": {
    "instance_iou": 0.9286325624295405,
    "ew_dice": 0.9922762596110503,
    "count_mae": 0.16166666666666665,
    "bg_leak": 0.03171080124814902,
    "score": 0.7271801101391581
  },
  "completed_utc": "2026-07-07T07:52:21.693864+00:00",
  "profile": "T4_L4_EXPERIMENT"
}