{
  "evaluation_time": "2026-09-16T08:00:00Z",
  "cases": [
    {
      "case_id": "baseline_verified",
      "same_lens": true,
      "same_metric_regime": true,
      "same_query": true,
      "same_reporting_identity": true,
      "source_freshness": "CURRENT",
      "snapshot_reused_after_requery": false,
      "provenance_complete": true,
      "bridge_valid": false
    },
    {
      "case_id": "identity_changed",
      "same_lens": true,
      "same_metric_regime": true,
      "same_query": true,
      "same_reporting_identity": false,
      "source_freshness": "CURRENT",
      "snapshot_reused_after_requery": false,
      "provenance_complete": true,
      "bridge_valid": false
    },
    {
      "case_id": "prior_filter_missing",
      "same_lens": true,
      "same_metric_regime": true,
      "same_query": null,
      "same_reporting_identity": true,
      "source_freshness": "CURRENT",
      "snapshot_reused_after_requery": false,
      "provenance_complete": true,
      "bridge_valid": false
    },
    {
      "case_id": "stale_snapshot_reused",
      "same_lens": true,
      "same_metric_regime": true,
      "same_query": true,
      "same_reporting_identity": true,
      "source_freshness": "CURRENT",
      "snapshot_reused_after_requery": true,
      "provenance_complete": true,
      "bridge_valid": false
    },
    {
      "case_id": "derivation_deleted",
      "same_lens": true,
      "same_metric_regime": true,
      "same_query": true,
      "same_reporting_identity": true,
      "source_freshness": "CURRENT",
      "snapshot_reused_after_requery": false,
      "provenance_complete": false,
      "bridge_valid": false
    },
    {
      "case_id": "metric_regime_bridged",
      "same_lens": true,
      "same_metric_regime": false,
      "same_query": true,
      "same_reporting_identity": true,
      "source_freshness": "CURRENT",
      "snapshot_reused_after_requery": false,
      "provenance_complete": true,
      "bridge_valid": true
    },
    {
      "case_id": "unknown_provenance",
      "same_lens": true,
      "same_metric_regime": true,
      "same_query": true,
      "same_reporting_identity": true,
      "source_freshness": "CURRENT",
      "snapshot_reused_after_requery": false,
      "provenance_complete": null,
      "bridge_valid": false
    },
    {
      "case_id": "search_transfer_page_filter_changed",
      "same_lens": true,
      "same_metric_regime": true,
      "same_query": false,
      "same_reporting_identity": true,
      "source_freshness": "CURRENT",
      "snapshot_reused_after_requery": false,
      "provenance_complete": true,
      "bridge_valid": false
    }
  ]
}