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    "experimentalReason": "Root observed black PBR silhouettes and white floor in the in-app WebKit WebGPU runtime after entry. A separate normal Playwright WebKit WebGPU render showed coloured materials. The runtime-specific cause remains unresolved; creation/FPS alone do not qualify the rendering.",
    "readinessBoundary": "A scene-specific three-patch chromatic-pixel heuristic screens the actual framebuffer for the observed empty/black/white material failure. It is not a comprehensive perceptual score, hardware benchmark or production parity proof."
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      "author": "Eric Chadwick / Wayfair, LLC",
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      "changes": "Original GLB bytes; 31 cm horizontal scale, position and scene lighting applied at runtime. Attribution in product details and licenses.html."
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      "author": "Poly Haven",
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        "assets/wood-arm.jpg"
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      "name": "Devanture mark proposal",
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      "status": "Current task AI proposal; no final owner acceptance asserted"
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      "usedFor": "Exact-version constructor/initAsync/support getter and compiler dependency behaviour"
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      "usedFor": "CC0 licence and asset redistribution permission"
    },
    {
      "url": "https://creativecommons.org/licenses/by/4.0/",
      "usedFor": "Shoe attribution and adaptation notice"
    },
    {
      "url": "https://www.w3.org/WAI/ARIA/apg/patterns/dialog-modal/",
      "usedFor": "Native modal dialogs, Escape and focus restoration"
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      "url": "https://www.w3.org/TR/WCAG22/#keyboard",
      "usedFor": "Keyboard path, no pointer-lock requirement, non-walking product alternative"
    },
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      "checkedAt": "2026-10-24T11:21:36.713Z",
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