AEG-V16-024 — FE accessibility gate

WBS / Requirement / UI / Test: AEG-V16-024 / REQ-V16-FEC-08 / UI-V16-FEC-08 / T-V16-FEC-08

Source / Assumption / Unknown / Decision Required

Source: FieldShell, CommandBar, their component tests, and WBS Master.
Assumption: shared-component checks provide a baseline; each screen still owns keyboard/focus and visual acceptance evidence.
Unknown: full browser assistive-technology and visual-regression artifacts are not available in this workspace.
Decision Required: do not call the gate complete until UX/QA attach those artifacts.

pnpm test -- --run src/shared/ui/components/tests/accessibility.contract.spec.ts: 2/2 passed.
pnpm typecheck: passed.
The suite verifies required invalid fields expose label, error alert, and ARIA relationships, and busy commands expose state while blocking execution.
Browser inspection on 2026-08-08 confirmed the skip link moves focus to main. It also found obsolete v2 contract copy in the UI catalog while the live adapter/footer identify contract 4.0; the display copy is corrected in this slice. The absent favicon is recorded as a non-accessibility local-server 404 and is not treated as a Gate pass/fail signal.
Preserved evidence: evidence/AEG-V16-024/a11y-contract_20260808.log (2/2), evidence/AEG-V16-024/frontend-typecheck_20260808.log, and evidence/AEG-V16-024/ui-standard-contract-v4_20260808.png.