Researcher (gsd-phase-researcher) returned HIGH-confidence verdicts on the
12-area brief from .continue-here.md:
Ask 1 (install-time auto-start): INFEASIBLE in unmanaged Chrome.
W3C Screen Capture spec §5.1 mandates transient user activation;
chrome.runtime.onInstalled confers none. Floor: 2 clicks
(toolbar/welcome-page → Share button on picker). Enterprise policy
ScreenCaptureWithoutGestureAllowedForOrigins exists (Chrome+Edge ≥ 123)
but only applies to managed-Chrome contexts with extension URL
whitelisted — does NOT apply to Load-Unpacked deployment; deferred-idea.
Ask 2 (auto-select desktop / skip picker): INFEASIBLE in unmanaged Chrome.
W3C spec mandates user MUST choose every time. displaySurface:'monitor'
is a hint (already applied src/offscreen/recorder.ts:270).
chooseDesktopMedia doesn't auto-accept on single-monitor setups AND
streamId not usable in MV3 offscreen documents (Chrome DevRel position).
Primary recommendation: KEEP Plan 01-10's current informational CTA
charter (commit 3a530c2 unchanged). Both architectures hit the same
2-click floor; informational CTA has lower maintenance surface AND
teaches operator where the toolbar icon lives (critical for day-2+
sessions).
Enhancement candidate (NOT required for 01-10): add
monitorTypeSurfaces:'include' (Chrome ≥ 119) to offscreen getDisplayMedia
constraints — single line, zero risk, removes tab/window panes from
picker entirely. Suggest as Plan 01-09 amendment OR mini-plan.
Open questions for orchestrator (3):
1. Confirm informational CTA charter (this research recommends YES)
2. Ship monitorTypeSurfaces:'include' as Plan 01-09 amendment vs deferred?
3. Are Repremium operators on Wayland Linux? (affects welcome-page copy)
File: .planning/phases/01-stabilize-video-pipeline/01-10-RESEARCH.md
(1092 lines; full W3C citations, Chromium issue links, prior art for
Loom/Screencastify/Veed/Awesome-Screenshot, ASCII flow diagrams,
edge-case enumeration for macOS/Wayland/incognito/managed-Chrome)
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
Mark
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