feat(a11y): focus return, typing announcement, shortcuts help (P3-4)

- Focus returns to the trigger when closing 4 genuine dialogs (room-topic
  viewer, reaction viewer, header topic, Search) — 20 inline popouts/menus
  correctly left as-is (returning focus to a hover target would be wrong).
- Typing indicator announced via a visually-hidden role="status" region;
  the visual text is aria-hidden to avoid double announcement.
- New keyboard-shortcuts help dialog (press ?, ignored while typing),
  mounted in ClientNonUIFeatures.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>

This commit is contained in:

Jared Vititoe

2026-07-02 11:45:22 -04:00

parent 4380041014

commit 21dda93d1b

9 changed files with 297 additions and 7 deletions

									
										src/app/features/shortcuts/index.ts
									
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				export * from './KeyboardShortcutsDialog';

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				`export * from './KeyboardShortcutsDialog';`