- modal/_validateField: set aria-invalid on invalid inputs so screen readers
announce field errors; login.js mirrors this for username/password fields
- color pickers (notes, calendar): wrap swatches in role="radiogroup" with
aria-labelledby, add aria-checked per swatch, localized aria-labels instead
of hex values, roving tabindex with Arrow/Enter/Space keyboard navigation
- nav badges: badge spans get aria-hidden="true"; nav link aria-label updated
to include overdue count (tasks) or pending reminder count (reminders)
- router: remove aria-live from <main> (caused full page re-reads on nav);
add dedicated #route-announcer sr-only region with aria-live=polite +
aria-atomic, announces page label 50ms after render completes
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>