{
  "algorithm": "dash",
  "dataset": "arithmetic-smoke",
  "seed": 42,
  "steps": 120,
  "baseline": {
    "accuracy": 0.234375,
    "mean_reward": 0.3840961966
  },
  "final": {
    "accuracy": 0.578125,
    "mean_reward": 0.6791679298
  },
  "relative_accuracy": 1.4666666667,
  "diagnostics": {
    "adaptive_gate_mean": 0.4821666139,
    "backward_horizon_mean": 1.561664359,
    "local_clip_rate": 0.1666666667,
    "extra_teacher_forward_passes": 0.0
  },
  "schema_version": 2,
  "manifest_ref": "experiments:dash-arithmetic-seed42",
  "evaluation_protocol": {
    "tier": "l1_mechanism",
    "seeds": [
      42
    ],
    "formal_comparison": false,
    "claim_policy": "single/few-seed smoke result; do not claim a stable improvement"
  },
  "provenance": {
    "artifact_path": "docs/experiments/dash-arithmetic-seed42.json",
    "historical_migration": "historical-metrics-v2-2026-08-09",
    "original_code_commit": "not recorded",
    "dataset_fingerprint": "not recorded in historical artifact"
  }
}