{
  "algorithm": "rail",
  "seed": 42,
  "dataset": "arithmetic-smoke",
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    "train_examples": 256,
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    "data_source": "deterministic arithmetic smoke suite",
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    "teacher_prefill_calls": 0,
    "online_teacher_calls": 0,
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    "critic_updates": 0,
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    "last_diagnostics": {
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    "fidelity": "mechanism reproduction on a candidate-policy model"
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  "schema_version": 2,
  "manifest_ref": "post-training:arithmetic-smoke-seed42",
  "evaluation_protocol": {
    "tier": "l1_mechanism",
    "seeds": [
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    "formal_comparison": false,
    "claim_policy": "single/few-seed smoke result; do not claim a stable improvement"
  },
  "provenance": {
    "artifact_path": "docs/post-training/2608.05080-rail/metrics/arithmetic-smoke-seed42.json",
    "original_code_commit": "working tree",
    "dataset_fingerprint": "deterministic built-in mini-suite",
    "historical_migration": "historical-metrics-v2-2026-08-09"
  }
}