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          ],
          "paused": true,
          "currentTime": 0.408,
          "error": null,
          "readyState": 4,
          "audioState": "running"
        },
        "scope": "Two actual published proxies with actual core5.4.0; native MP4 pixels/clock or explicitly unsupported Windows WebKit APIs. No candidate, HLS or AV-sync acceptance.",
        "frameClock": null
      },
      {
        "project": "firefox",
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          "webkitAudioContext": "undefined",
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        "outcome": "native-mp4-playback-observed",
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        "scope": "Two actual published proxies with actual core5.4.0; native MP4 pixels/clock or explicitly unsupported Windows WebKit APIs. No candidate, HLS or AV-sync acceptance.",
        "frameClock": null
      },
      {
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          },
          "readyState": 1
        },
        "scope": "Two actual published proxies with actual core5.4.0; native MP4 pixels/clock or explicitly unsupported Windows WebKit APIs. No candidate, HLS or AV-sync acceptance.",
        "frameClock": null
      },
      {
        "project": "webkit",
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        "implementation": "published-1.0.0",
        "sha256": "7331465d8c7a6575505b9d3fd45986c5d3d9cb3839b2620ad5a52c581199562b",
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          "AudioDecoder": "undefined",
          "AudioContext": "undefined",
          "webkitAudioContext": "undefined",
          "coreVersion": "5.4.0"
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        "outcome": "verified-unsupported-capability-control",
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          "error": {
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            "message": "undefined is not a constructor (evaluating 'new t')"
          },
          "readyState": 0
        },
        "scope": "Two actual published proxies with actual core5.4.0; native MP4 pixels/clock or explicitly unsupported Windows WebKit APIs. No candidate, HLS or AV-sync acceptance.",
        "frameClock": null
      }
    ]
  },
  "fixtureSha256LF": {
    "test/mediabunny.test.js": "cfde988178f6d358fca55bff21473a7f8855b3ceedc0b9507e5a2871fd7ac52e",
    "test/browser/mediabunny.spec.js": "0d9af2fc2c47a9a78953e8c1fd69148ba553dc3b5e3f5ff0c141f537597ae9fe",
    "test/browser/mediabunny-inputs.spec.js": "341ec06c3ec6e95ffce563eb47f423618a585b60a5057341e2d847e5004cbf0e",
    "test/helpers/mediabunny.js": "3e25bd5274d58be4d0bb85cd5fb2a825848cae1bfdbfaf5c91177a0c2b03a87a",
    "test/helpers/trackless-mp4.js": "41e56b43ba3d7a7dbc1ba0620109384afbf279c5283d8be4fa3e18d356e0d2f8"
  },
  "checks": [
    {
      "command": "yarn test:mediabunny",
      "result": "pass",
      "tests": 24,
      "scope": "Actual historical engines with controlled lifecycle interleavings and Range responses"
    },
    {
      "command": "focused eslint --no-fix",
      "result": "pass",
      "log": "refactor/.cache/mb02-lint-final.log"
    },
    {
      "command": "yarn test:browser test/browser/mediabunny-inputs.spec.js test/browser/mediabunny.spec.js",
      "result": "pass",
      "tests": 42,
      "log": "refactor/.cache/mb02-browser-final.log"
    },
    {
      "command": "yarn ci:check",
      "result": "pass",
      "tests": {
        "unit": 1030,
        "engineering": 14,
        "baseline": 141,
        "mainTotal": 1185,
        "repeatedContractExecutions": 44
      },
      "strictProductionTypeScriptFiles": 290,
      "log": "refactor/.cache/mb02-ci-integrated.log"
    },
    {
      "command": "production/demo/artifact hashes compared with frozen source",
      "result": "unchanged",
      "files": 17
    }
  ],
  "limitations": [
    "Historical baseline, not candidate fixes or release acceptance.",
    "36 native-input cases use a controlled ArtPlayer host; six MP4 cases use actual core5.4.0.",
    "Short frame/audio-clock observations are not acoustic latency, long-run drift or a device support claim; complete AV sync remains MB-06/09.",
    "Normal settled-playback AudioContext/RAF cleanup does not waive the reproduced pending-operation failures.",
    "HLS state transitions tested; actual control/setting DOM and concurrent topology updates remain MB-07/09.",
    "Canvas/Ambilight factory compatibility decision remains pending."
  ],
  "ciIntegration": "Added test/mediabunny.test.js to explicit test:unit list and added test:mediabunny; initial full CI passed without these cases, then integration was corrected and full CI rerun."
}