{
  "schemaVersion": "fidc-compact-adjusted-close-rejection/v1",
  "measuredAt": "2026-09-05T04:29:00+08:00",
  "host": "192.168.31.177",
  "candidateCommit": "ab87e18",
  "revertCommit": "0c2681e6996800eae5f3b881e75a01e7a078863f",
  "restoredRunnerBinarySha256": "3e69af42e41321d31c69b552cf22d7033ce1ea8d94305a32e32461148cdbfc60",
  "candidate": {
    "description": "replace two Vec<Option<f64>> adjusted-close arrays with f64 arrays using NaN as the internal missing sentinel",
    "theoreticalSteadyStateMemoryReductionBytesPerMarketRow": 16,
    "hotEngineSeconds": [5.119, 5.168, 5.516, 5.332, 4.69],
    "hotMedianEngineSeconds": 5.168
  },
  "acceptedBaseline": {
    "historicalMedianEngineSeconds": 3.896,
    "sameWindowRollbackEngineSeconds": [4.144, 4.169],
    "sameWindowRollbackMedianEngineSeconds": 4.169
  },
  "observed": {
    "regressionVersusHistoricalBaselinePercent": 32.64887063655031,
    "regressionVersusSameWindowRollbackPercent": 23.962580954665402
  },
  "businessContract": {
    "totalReturn": 0.9219861819172002,
    "tradeCount": 26088,
    "canonicalSha256": "b42fea66237d06eadb24f6b8c9e2760e7319fe3699f315b99e01f433ef2aa234",
    "resultStoreSha256": "92343fb369fea68b2544b654151c5c43a935940580b14afbe8eefb3844f72a54",
    "resultConsistent": true,
    "terminalAuditStatus": "clean"
  },
  "testGate": {
    "coreUnitTotal": 422,
    "corePassed": 416,
    "ignoredManualBenchmarks": 6,
    "failed": 0,
    "integrationSuitesPassed": true
  },
  "remoteArtifacts": [
    "/srv/fidc/canonical/run/fidc-private/evidence/compact-adjusted-close-primary-20260905.json",
    "/srv/fidc/canonical/run/fidc-private/evidence/compact-adjusted-close-rollback-primary-20260905.json"
  ],
  "acceptance": {
    "status": "rejected_and_removed",
    "reason": "the memory-dense NaN representation materially slowed the hottest moving-average path despite preserving exact business results"
  }
}