{
  "_notes": [
    "Phase 3.5 — confirmation and BCD tuning.",
    "All runs use best settings from phase 3: refugelike backbone, ratio IOP correction, drop raw IOP, exclude axial length.",
    "Baseline here is phase3/iop_ratio_drop_raw (0.8685 ± 0.011) — already complete, not re-run.",
    "common_args are prepended to every run's args list."
  ],

  "common_args": [
    "--eval-mode", "binary",
    "--hypertower-mode", "single",
    "--epochs", "30",
    "--in-memory-cache",
    "--augment",
    "--tune-binary-threshold",
    "--backbone", "refugelike",
    "--iop-corr-method", "ratio",
    "--iop-drop-raw",
    "--exclude-cols", "Axial_Length",
    "--output-root", "v3/results"
  ],

  "_common_args_implicit_defaults": {
    "--bridge-mode": "fused",
    "--warmup-cd-epochs": "40",
    "--single-warmup-tower-epochs": "3",
    "--single-warmup-fused-epochs": "3"
  },

  "baseline": {
    "run_name": "phase35/iop_bcd_p07",
    "description": "Best IOP preprocessing + best BCD prob from phase 3 combined.",
    "extra_args": ["--tower-loss-mode", "bcd", "--bcd-prob", "0.7"]
  },

  "groups": [
    {
      "name": "bcd_tuning",
      "description": "Extended BCD probability sweep with best IOP settings.",
      "runs": [
        {
          "run_name": "phase35/iop_bcd_p08",
          "description": "BCD p=0.8 with ratio IOP + drop raw.",
          "extra_args": ["--tower-loss-mode", "bcd", "--bcd-prob", "0.8"]
        },
        {
          "run_name": "phase35/iop_bcd_p09",
          "description": "BCD p=0.9 with ratio IOP + drop raw.",
          "extra_args": ["--tower-loss-mode", "bcd", "--bcd-prob", "0.9"]
        }
      ]
    }
  ]
}