debont80
4aec32e3c2
UI33 — render titles as real headings so Narrator heading-navigation works: the shared ScreenHeader title is now <Subtitle2 as="h1"> (one h1 per screen in one place — Downloads/History/Library/Settings/Terminal); DownloadsView "Queue (N)" and all 11 settings cards are <Subtitle2 as="h2"> sections; Onboarding "Welcome" is <Title2 as="h1">. A minimal h1–h6 margin reset in base.css zeroes the UA heading margin (Fluent's typography classes out-specify the element selector, so the visual ramp is unchanged) so layout matches the former spans. UI27 — give the command palette proper combobox/listbox semantics: the input is role="combobox" with aria-controls/aria-activedescendant/aria-autocomplete, the list is role="listbox", and each row is role="option" with aria-selected, so the active row is announced to screen readers via active-descendant. Focus stays on the input (standard combobox pattern), so the rows became non-focusable divs; onMouseEnter is kept to unify pointer + keyboard highlight on one sel state. Also corrected UI30's checkbox in the audit (already implemented via the shared SegmentedControl radiogroup; only the marker lagged). typecheck + 253 tests + eslint + prettier + production build all green. Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>