{
  "schemaVersion": 1,
  "status": "provisional",
  "product": "YouTube",
  "scope": "Signed-out consumer web, public evidence",
  "updatedAt": "2026-09-19T02:40:43.476Z",
  "benchmarkScore": null,
  "readinessLevel": "provisional",
  "validationScores": {
    "productCoverage": null,
    "cssToComponentCoverage": 9.4,
    "referenceFidelity": null,
    "juniorExecution": 10,
    "expertUxUiQuality": null,
    "systemCoherenceAndAdoption": null,
    "operationalAndRiskReadiness": null,
    "assessmentConfidence": null
  },
  "gsitesCompletenessScore": null,
  "recipeUrls": 13,
  "distinctRouteCompositions": 9,
  "pageFamilies": 8,
  "components": 15,
  "staticSvgAssets": 84,
  "cssMapping": {
    "rows": 249,
    "complete": 221,
    "partial": 28,
    "missing": 0,
    "weightedEarned": 484,
    "weightedExpected": 517
  },
  "pending": [
    "Frozen-package benchmark panel and canonical preflight/closure validation"
  ],
  "evidenceBoundary": "Reconstructed local code and public captures. Private accounts, billing completion, Studio and native apps are excluded.",
  "verifiedHandoff": {
    "tasks": 4,
    "independentStages": 24,
    "assistedStages": 0,
    "blockedStages": 0,
    "boundary": "frozen local reference",
    "evidence": "reference-data/junior-handoff.json"
  },
  "brandAndIconAssets": 94,
  "independentAssetReview": {
    "passed": 94,
    "pending": 0
  },
  "publication": {
    "status": "published",
    "provider": "cloudflare-pages",
    "profile": "cloudflare-work",
    "project": "youtube-design-research",
    "visibility": "public",
    "url": "https://youtube-design-research.pages.dev/",
    "authorization": "User requested deployment with cloudflare-work to pages.dev on 2026-09-19."
  },
  "sharedValidatorRepair": {
    "status": "applied-and-regression-verified",
    "regressionCases": 9,
    "evidence": "evidence/validator-bootstrap-repair/application-status.json",
    "boundary": "Shared protocol verification, not a YouTube benchmark pass"
  },
  "localVerification": {
    "status": "passed",
    "boundary": "Retained September 18 local regression evidence. Current published bytes and behavior are bound separately by live verification.",
    "packageReport": "reference-data/local-verification-summary.json",
    "recipeUrls": 13,
    "pageUrls": 33,
    "htmlFiles": 32,
    "siteFiles": 498,
    "deepLinks": 506,
    "enabledControlDeclarations": 1142,
    "disabledControlDeclarations": 24,
    "accessibilityModes": 36,
    "axeCases": 66,
    "isolatedSpecimens": 34,
    "guideAccessibilityCases": 9,
    "operationalCases": 23
  },
  "preliminaryPremiumVisualReview": {
    "status": "passed",
    "notFinalBenchmarkPanel": true,
    "packageReport": "evidence/independent-premium-page-review-round8/review.json",
    "reportHash": "sha256:0a7ee54d34fe5fac5f7dc061fd80273e27f95373ce8b06a9a89dc0bf3dfdb03d",
    "scores": [
      {
        "area": "typography-and-color-fidelity",
        "score": 9.4
      },
      {
        "area": "visual-system-coherence",
        "score": 9.4
      },
      {
        "area": "hierarchy-and-readability",
        "score": 9.1
      },
      {
        "area": "responsive-composition",
        "score": 9.3
      },
      {
        "area": "interaction-clarity-and-craft",
        "score": 9.4
      },
      {
        "area": "guide-comparison-usability",
        "score": 9.6
      }
    ]
  },
  "liveVerification": {
    "status": "passed-for-rendered-guide",
    "verifiedAt": "2026-09-19T02:40:43.476Z",
    "packageReport": "reference-data/publication-verification.json",
    "pageUrls": 33,
    "htmlFiles": 32,
    "siteFiles": 498,
    "viewportWidths": [
      390,
      768,
      1440,
      1920
    ],
    "deepLinks": 506,
    "enabledControlDeclarations": 1142,
    "disabledControlDeclarations": 24,
    "controlReports": [
      "reference-data/control-audit-pages-live.json",
      "reference-data/guide-control-audit-pages-live.json",
      "reference-data/isolated-control-audit-pages-live.json"
    ],
    "boundary": "The published HTML, CSS, JavaScript, media and controls passed before this assessment metadata update. Final delivery and receipt verification for the metadata update are recorded separately in the package report. The final independent benchmark panel and canonical closure remain pending."
  }
}