{
  "schemaVersion": 1,
  "candidate": "f68632324ed9fa0ef5d0175ddc5d6d1c1e1ffbd7",
  "checkpoint": "sceneseed-canvas",
  "viewports": [
    {
      "viewportClass": "mobile",
      "viewportWidth": 390,
      "viewportHeight": 844,
      "viewportUnit": "css_px",
      "contentWidth": 390,
      "contentHeight": 844,
      "contentUnit": "css_px",
      "windowWidth": null,
      "windowHeight": null,
      "windowUnit": null,
      "deviceScaleFactor": 3,
      "captureWidth": 1170,
      "captureHeight": 2532,
      "captureUnit": "device_px",
      "state": "populated + queued + failed + blank draft",
      "transitionWidths": [389, 390, 391],
      "cycles": 5,
      "elapsedMs": 5210,
      "beforeScreenshot": "qa/final-head-mobile-before.png",
      "afterScreenshot": "qa/final-head-mobile-after.png",
      "recording": "qa/final-head-reveal-timestamped-captures.json",
      "proof": "Prompt cards reflow into a bounded horizontal rail and the Three.js stage remains full-width with no document overflow. Five reveals completed without a blank frame or accumulated object drift.",
      "notes": "The after capture intentionally shows the accessible focus handoff scrolling the selected-object controls into view.",
      "result": "PASS"
    },
    {
      "viewportClass": "small/narrow",
      "viewportWidth": 768,
      "viewportHeight": 900,
      "viewportUnit": "css_px",
      "contentWidth": 768,
      "contentHeight": 900,
      "contentUnit": "css_px",
      "windowWidth": null,
      "windowHeight": null,
      "windowUnit": null,
      "deviceScaleFactor": 2,
      "captureWidth": 1536,
      "captureHeight": 1800,
      "captureUnit": "device_px",
      "state": "populated + queued + failed + blank draft",
      "transitionWidths": [767, 768, 769, 899, 900, 901, 1099, 1100, 1101],
      "cycles": 5,
      "elapsedMs": 4914,
      "beforeScreenshot": "qa/final-head-small-narrow-before.png",
      "afterScreenshot": "qa/final-head-small-narrow-after.png",
      "recording": "qa/final-head-reveal-timestamped-captures.json",
      "proof": "The 448 CSS-pixel plugin column preserves readable cards, the stage, and all selected-object actions without horizontal page overflow. The compact-to-grid transition is stable on both sides of 1100 CSS pixels.",
      "notes": "The host sidebar opens at 768 CSS pixels; the plugin correctly retains its compact column layout in the remaining width.",
      "result": "PASS"
    },
    {
      "viewportClass": "normal desktop",
      "viewportWidth": 1440,
      "viewportHeight": 900,
      "viewportUnit": "css_px",
      "contentWidth": 1440,
      "contentHeight": 900,
      "contentUnit": "css_px",
      "windowWidth": null,
      "windowHeight": null,
      "windowUnit": null,
      "deviceScaleFactor": 2,
      "captureWidth": 2880,
      "captureHeight": 1800,
      "captureUnit": "device_px",
      "state": "populated + queued + failed + blank draft",
      "transitionWidths": [1099, 1100, 1101, 1439, 1440, 1441],
      "cycles": 5,
      "elapsedMs": 4645,
      "beforeScreenshot": "qa/final-head-normal-desktop-before.png",
      "afterScreenshot": "qa/final-head-normal-desktop-after.png",
      "recording": "qa/final-head-reveal-timestamped-captures.json",
      "proof": "The card rail, stage, selected-object controls, and accessible object list remain aligned with no clipping or page overflow. The selected scene returns to the same geometry after five reveal cycles.",
      "notes": "Light, dark, system persistence, reduced motion, hard reload, drag placement, keyboard placement, and WebGL recovery were exercised on this exact branch build.",
      "result": "PASS"
    },
    {
      "viewportClass": "very large desktop",
      "viewportWidth": 3440,
      "viewportHeight": 1440,
      "viewportUnit": "css_px",
      "contentWidth": 3440,
      "contentHeight": 1440,
      "contentUnit": "css_px",
      "windowWidth": null,
      "windowHeight": null,
      "windowUnit": null,
      "deviceScaleFactor": 1,
      "captureWidth": 3440,
      "captureHeight": 1440,
      "captureUnit": "device_px",
      "state": "populated + queued + failed + blank draft",
      "transitionWidths": [3439, 3440, 3441],
      "cycles": 5,
      "elapsedMs": 4972,
      "beforeScreenshot": "qa/final-head-very-large-desktop-before.png",
      "afterScreenshot": "qa/final-head-very-large-desktop-after.png",
      "recording": "qa/final-head-reveal-timestamped-captures.json",
      "proof": "The ultrawide stage expands continuously while the card rail remains bounded and the 3D objects retain their camera framing. Five reveals introduce no gaps, resets, drift, or overflow.",
      "notes": "The canvas uses the available width by design; object scale and controls remain stable rather than stretching with the stage.",
      "result": "PASS"
    }
  ],
  "responsiveTransitions": "PASS",
  "sustainedMotion": "PASS",
  "result": "PASS"
}