[per Plan 01-14; closes B-01-14-01 via Step 1b lockstep]
- src/offscreen/recorder.ts: add monitorTypeSurfaces:'include' as top-level
DisplayMediaStreamOptions sibling of video: (W3C Screen Capture spec §6.1;
Chrome >= 119; removes tab/window panes from the operator's picker per
Plan 01-10 RESEARCH §5 + §Pitfall-5 recommendation). Typed widening cast
extended in lockstep to keep the explicit-typing contract (no `as any`).
D-15 post-grant validation block at recorder.ts:294 UNCHANGED — belt
(picker narrowing) + suspenders (post-grant tear-down) chain preserved.
- tests/offscreen/display-surface-constraint.test.ts: lockstep update of
the strict-deep-equality assertion at lines 223-226 with the same key
ordering as the source change (video -> monitorTypeSurfaces -> audio).
toHaveBeenCalledWith contract preserved (NO expect.objectContaining —
the test author's "catches future drops of ANY field" discipline is
honored). This edit + the source change land in the SAME commit so the
98/98 baseline never crosses a commit boundary in RED state.
- src/test-hooks/offscreen-hooks.ts: capture last constraints object in
module-scoped `lastGetDisplayMediaConstraints` cell (was `_constraints`
received-but-unused; renamed to `constraints`); add `get-last-getDisplayMedia-constraints`
bridge op to the __mokoshOffscreenQuery dispatcher between
get-display-surface and get-segment-count. Defensive try/catch mirrors
the existing dispatcher pattern; the cell is module-internal so the
MokoshTestSurface cross-cast in types.ts requires NO change (decision
documented inline in offscreen-hooks.ts).
- tests/uat/extension-page-harness.ts: add `assertA23` mirroring `assertA3`
(bridge query → 2-check AssertionResult: non-null constraints + value).
Extend the `Window.__mokoshHarness` declaration + runtime export + status
bar text + console.log to reference A23.
- tests/uat/lib/harness-page-driver.ts: export `driveA23(page)` mirroring
the `driveA14` page.evaluate wrapper shape. Standard read-only driver.
- tests/uat/harness.test.ts: extend FORBIDDEN_HOOK_STRINGS (line 85) with
`lastGetDisplayMediaConstraints` and `get-last-getDisplayMedia-constraints`.
Import driveA23. Append `{ name: 'A23', drive: driveA23 }` to the drivers
array after the A14 entry. Update header comment + orchestrator stdout
to reflect A14 + A23 chain. The `Total = drivers.length + 1` arithmetic
adapts automatically: 14 + 1 = 15 → 15 + 1 = 16.
- tests/background/no-test-hooks-in-prod-bundle.test.ts: lockstep
extension of FORBIDDEN_HOOK_STRINGS (line 105) with the same 2 strings.
Header comment updated to "Total: 12 surface strings." (was 10).
Confirms production `dist/` has ZERO occurrences after `npm run build`
via the `__MOKOSH_UAT__` dead-branch tree-shake (T-01-14-04 mitigation).
D-01 (whole-desktop only via getDisplayMedia; reject window/tab surfaces) is
the design intent that monitorTypeSurfaces:'include' realizes at the picker-
UI level. D-15 post-grant validation (recorder.ts:294-307) remains the
actual enforcement against managed-policy/DevTools/older-Chrome overrides.
Verification chain (per Plan 01-14 §verify; clean post-commit):
- `npx tsc --noEmit` exit 0
- `npm run build` exit 0; dist/ produced, monitorTypeSurfaces ships in
the offscreen chunk as the operator-facing picker hint
- `npm run build:test` exit 0; dist-test/ produced with the harness
hooks intact (gated)
- `npm test` 100/100 GREEN (was 98/98; +2 via the 2 new FORBIDDEN_HOOK_STRINGS
parametrized tests — both PASS, production bundle hook-free)
- `npm run test:uat` 16/16 GREEN (15 → 16 via A23). A23 reads constraints
`{video: {...}, monitorTypeSurfaces: 'include', audio: false}` from the
fakeGetDisplayMedia capture cell — round-trips through the full call site.
- Production bundle spot-check:
`grep -rc 'lastGetDisplayMediaConstraints\|get-last-getDisplayMedia-constraints' dist/ | grep -v ':0$'`
→ empty (all `:0` filtered) → ZERO leakage.
References:
- W3C Screen Capture §6.1 DisplayMediaStreamOptions:
https://www.w3.org/TR/screen-capture/#dom-displaymediastreamoptions-monitortypesurfaces
- Chrome screen-sharing-controls (Chrome 119+):
https://developer.chrome.com/docs/web-platform/screen-sharing-controls
- Plan 01-10 RESEARCH §5 + §Pitfall-5 (recommendation provenance):
.planning/phases/01-stabilize-video-pipeline/01-10-RESEARCH.md
- Architectural-note (replaces retired AMENDMENT-A.md improvisation per
01-11-SUMMARY): canonical GSD ceremony — plan → checker (B-01-14-01)
→ executor → SUMMARY (this commit).
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
