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test(auto-thumbnail): [PKG-AUTO-THUMB-03] distinguish render and data readiness

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Harvey Zhao committed 2026-09-14 04:48:39 +08:00
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commit 3e39fc745f
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refactor/risks.json
+4 -2
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@@ -4166,9 +4166,11 @@
"refactor/baselines/auto-thumbnail-hidden-renderer.json",
"refactor/baselines/auto-thumbnail-timeline-media.json",
"test/auto-thumbnail-frames.test.js",
"refactor/baselines/auto-thumbnail-frame-presentation.json"
"refactor/baselines/auto-thumbnail-frame-presentation.json",
"refactor/changes/2026-09-14-PKG-AUTO-THUMB-03-rendering-readiness.md",
"refactor/baselines/auto-thumbnail-rendering-readiness.json"
],
"compatibleResolution": "Establish actual decoded-frame readiness for the existing timeline/grid and preserve silent independent extraction; do not waive colored pixel checks as unsupported media.",
"compatibleResolution": "Establish actual decoded-frame readiness for the existing timeline/grid and preserve silent independent extraction; do not waive colored pixel checks as unsupported media. Intrinsic-size hidden/opacity/clip/visible rendering crossed with current/readyState/first-loadeddata-event strategies still misses the unique first frame in all 12 Windows WebKit profiles. Correct Firefox frames retain totalVideoFrames=0, so that counter cannot be a portable readiness gate. Do not reintroduce these unvalidated workarounds.",
"closureCriteria": "Candidate source and artifacts generate usable sampled pixels on native browser controls with lifecycle checks; supported Safari and core combinations remain explicit final gates.",
"workspaceState": "The frames module now waits for native presentation and seek completion on capable browsers. Chromium/Firefox source/main/legacy assert all five cells including first purple frame, second red cell, legitimate black and presentation times. Callback-less Windows WebKit first two cells remain diagnostic, later cells asserted; physical Safari/core combinations remain open. 84 native lifecycle/pixel cases passed with explicit held native-frame vs Blob-fallback paths; 19 new Node cases fail 17 ways on prior checkpoint and all 52 current cases pass per candidate. Risk and task03 remain open."
},