- Scaffold shared UI fragments and styles in src/shared/ui/
- Implement full Auth vertical slice in src/features/auth/ with WebAuthn ceremonies and recovery endpoints
- Implement full Admin vertical slice in src/features/admin/ with responsive tables and mobile decks
- Add public client-side JS utilities and pure JS BIP-39 module
- Mount routes in src/main.ts and keep legacy server/ and ui/ quarantined
- Add pure JSX and API tests for Auth and Admin slices
