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Guard stale app execution against feature contract changes

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Jonathan Sykes
2026-10-08 09:18:51 +08:00
parent 3505dc3c0e
commit c4a512bea6
7 changed files with 143 additions and 8 deletions
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perf/README.md
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@@ -350,3 +350,7 @@ then use the page FCP to locate the rendering dependency.
Pass `--assert-cold` on new builds to require exactly one positive-byte app.js
response in every cold sample, including worker installation. Omit this assertion
when diagnosing historical regressions.
Phase 6 counts its fetch-owned app.js response in initial JS/CSS bytes. Since the
bootstrap consumes that response asynchronously, DOMContentLoaded no longer means
app execution is complete; compare the existing actual boot-done landmark.