Plan 04-08's core thesis (HTMLVideoElement.captureStream bypasses canvas
throttling per debug session-2 verdict) IS the correct path to close
ROADMAP SC #1. But two blocking issues prevent reliable delivery:
BLOCKER 1: Vite `?url` asset-emission analog mis-applied — mokosh-mark.svg
is 877 bytes (inlined as data:image/svg+xml URI) so the Plan 01-10 "?url
+ crxjs auto-WAR" precedent is NOT a direct analog for the 1.9 MB WebM
which will emit as a separate dist-test/assets/<hash>.webm file. WAR
auto-generation for extracted assets is unverified in this codebase.
Remediation: probe-then-decide OR Blob URL from ?raw ArrayBuffer.
BLOCKER 2: installFakeDisplayMedia()'s eager-install-at-module-load
contract is silently broken by the proposed async conversion. The race
window opens because recorder.ts:48 resolves before the async install
completes; recorder.startRecording → real getDisplayMedia → headless
hang. Remediation: keep sync monkey-patch; defer the canplay wait into
fakeGetDisplayMedia closure (lazy first-frame).
WARNINGS surface unverified headless autoplay reliability, displaySurface
monkey-patch portability to HTMLVideoElement tracks, spike probe-value
gates not surfaced as automated verify, and ROADMAP.md flip without grep
enforcement.
Architectural alignment confirmed (segments: Blob[] preserved; IDB
correctly rejected; D-P4-01 honored). iter-2 is a methodology-tightening
pass, not re-architecture. Estimated ~150-300 lines of plan edits.
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
