{
  "_notes": [
    "Epoch length sensitivity experiments.",
    "All other settings match the phase3 baseline (fused bridge, BCD p=0.5, refugelike, etc.).",
    "common_args are prepended to every run's args list."
  ],

  "common_args": [
    "--eval-mode", "binary",
    "--hypertower-mode", "single",
    "--in-memory-cache",
    "--augment",
    "--tune-binary-threshold",
    "--backbone", "refugelike",
    "--output-root", "v3/results"
  ],

  "_common_args_implicit_defaults": {
    "--bridge-mode": "fused",
    "--tower-loss-mode": "bcd",
    "--bcd-prob": "0.5",
    "--warmup-cd-epochs": "40",
    "--single-warmup-tower-epochs": "3",
    "--single-warmup-fused-epochs": "3"
  },

  "baseline": {
    "run_name": "phase3/epochs_30",
    "description": "30-epoch run — same as phase3 baseline, included here for direct comparison.",
    "extra_args": ["--epochs", "30"]
  },

  "groups": [
    {
      "name": "epoch_length",
      "description": "Test sensitivity to total training epochs (warmup epochs unchanged).",
      "runs": [
        {
          "run_name": "phase3/epochs_1",
          "description": "1 epoch total — effectively pure warmup output with a single main-phase step.",
          "extra_args": ["--epochs", "1"]
        },
        {
          "run_name": "phase3/epochs_5",
          "description": "5 epochs total.",
          "extra_args": ["--epochs", "5"]
        },
        {
          "run_name": "phase3/epochs_10",
          "description": "10 epochs total.",
          "extra_args": ["--epochs", "10"]
        },
        {
          "run_name": "phase3/epochs_20",
          "description": "20 epochs total.",
          "extra_args": ["--epochs", "20"]
        },
        {
          "run_name": "phase3/epochs_50",
          "description": "50 epochs total.",
          "extra_args": ["--epochs", "50"]
        }
      ]
    }
  ]
}