{
  "kind": "structural_zero",
  "lane": "provenance",
  "metrics": {
    "input_sensitivity": null,
    "overall_pass": false,
    "replay_determinism": 0.0,
    "source_attribution": 0.0,
    "source_validity": 0.0
  },
  "model_id": "frontier-structural-zero",
  "note": "Frontier LLMs do not emit the typed signals these sub-metrics score; see docs/frontier_baselines.md",
  "rationale": "Provenance scoring inspects CognitiveTurnResult.pack_mutation_proposal, intent.tag, and vault_hits and emits a typed Provenance.sources tuple. Frontier outputs do not include any of these typed fields.",
  "timestamp": "2026-05-16T19:44:44.245649+00:00",
  "version": "v1"
}
