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        {
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        {
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  },
  "promotionGate": {
    "policy": {
      "candidate": "bm25f_dense_rrf",
      "baseline": "bm25f",
      "evaluationOnly": true,
      "maximumNdcgRegression": 0.02,
      "maximumRecallRegression": 0.02,
      "minimumTopicNdcgImprovement": 0.03,
      "maximumExactOrFilterMrrRegression": 0.02,
      "requirePerfectProvenance": true
    },
    "observed": {
      "ndcgAt10Delta": -0.0155,
      "recallAt10Delta": -0.0156,
      "topicNdcgAt10Delta": -0.0482,
      "exactMrrDelta": 0,
      "filterMrrDelta": 0,
      "provenance": 1,
      "pairedNdcg": { "wins": 2, "ties": 21, "losses": 6 }
    },
    "passed": false
  },
  "limitation": "Neural candidate pools have not yet received a second independent relevance adjudication; use these scores as provisional diagnostics. Fusion timing records composition overhead only; dense and BM25F query time must be added for end-to-end latency."
}
