{
  "version": "ew-phase5-v1",
  "checkedAt": "2026-10-13",
  "status": "scientific_and_render_verification_passed",
  "scope": "Pre-publication scientific reproduction and server-rendered UI verification",
  "scientificTests": {
    "passed": 8,
    "nationalLSOAs": 35672,
    "nationalRows": 142688,
    "preservedPriorScientificFiles": 460,
    "primaryCandidates": 28,
    "baselineFormDiagnostics": 10,
    "modelRecords": 2128,
    "independentStatsmodelsParity": {
      "coefficientMaxAbsoluteDifference": 2.4993895841873837e-13,
      "predictionMaxRelativeDifference": 8.516520821899576e-13,
      "clusterCovarianceMaxAbsoluteDifference": 3.659832853442069e-15
    },
    "zeroCountRegionalHeatBandsWithheld": 2,
    "primaryDecisionsChangedBySupportAudit": false
  },
  "reproduction": {
    "outputFiles": 149,
    "byteIdentical": 149,
    "freshExtractedKit": true,
    "allModelRefitsExecuted": true,
    "networkRequired": false
  },
  "serverRenderTests": {
    "passed": 8,
    "phase5Tests": 4,
    "priorPhase3And4RegressionTests": 4,
    "all62CardsRendered": true,
    "labelledControls": true,
    "accessibleChart": true,
    "downloadTargetsExist": true,
    "effectSelectorDataCombinationsChecked": 684
  },
  "gzipAndZipIntegrity": "passed",
  "statisticalMethodReview": "No material defect or release blocker identified in independent read-only review",
  "browserInteractionQA": "unavailable; not performed",
  "productionBuildAndLiveFiles": "Separate publication gates; see delivery result. This prebuild record does not certify those later steps.",
  "scientificLimitations": [
    "Provisional LSOA mileage and residual regional calibration/spatial dependence",
    "Mixed source vintages; no certified historical forecast availability",
    "Fixed-prediction intervals do not refit model selection or exposure",
    "No untouched outcome confirmation or insurer claims validation",
    "Univariate shortlist does not establish joint incremental value"
  ]
}