{
  "architecture": "S1Model",
  "config": {
    "width": 128,
    "heads": 4,
    "enc_layers": 3,
    "dec_layers": 2,
    "ff": 384,
    "dropout": 0.1,
    "id_dropout": 0.1,
    "pos_mode": "rand",
    "pos_table": 48,
    "ordinal": true,
    "ord_table": 12,
    "progress_head": false,
    "invariant_numerics": true,
    "modular": true,
    "pointer": "done",
    "index_eval": "identity",
    "type_dropout": 0.15,
    "temperature": 2.661,
    "ui": true,
    "ui_recent_fields": true,
    "ui_pending_feature": true,
    "ui_param_match": true
  },
  "metadata": {
    "name": "mesa-s1",
    "version": "0.1.0",
    "trained_on": "synthetic FreeCAD PartDesign episodes driven through the FreeCAD GUI (Qt widget tree)",
    "base": "taiga-s1 architecture; SFT + DAgger on UI-level data (12k episodes, ~391k decisions + 3 DAgger rounds)",
    "calibration": {
      "states": 16434,
      "episodes": 264,
      "T": 2.661,
      "held_out_T1": {
        "n": 8349,
        "acc": 0.8849,
        "nll": 0.3749,
        "ece": 0.0922,
        "mean_conf": 0.9666,
        "mean_conf_when_wrong": 0.91,
        "n_wrong": 961
      },
      "held_out_T": {
        "n": 8349,
        "acc": 0.8849,
        "nll": 0.2498,
        "ece": 0.0457,
        "mean_conf": 0.8845,
        "mean_conf_when_wrong": 0.7312,
        "n_wrong": 961
      }
    }
  }
}