{
  "promote": true,
  "reasons": [
    "field_accuracy: 0.112 -> 1.0 (+0.888) meets min improvement 0.05",
    "json_validity: 0.92 -> 1.0 (no meaningful regression)",
    "exact_match: 0.0 -> 1.0 (no meaningful regression)"
  ],
  "gate": {
    "primary_metric": "field_accuracy",
    "min_improvement": 0.05,
    "no_regression": [
      "json_validity",
      "exact_match"
    ],
    "regression_tolerance": 0.02
  },
  "base_report": "runs/ratchet-loop-demo/eval_base.json",
  "tuned_report": "runs/ratchet-loop-demo/eval_tuned.json"
}