Implement OnboardingBanner component that prompts new users to complete
setup with contextual banners for:
- Garmin connection (links to /settings/garmin)
- Period date (button with callback for date picker)
- Notification time (links to /settings)
Banners display at the top of the dashboard when setup is incomplete,
with icons and styled action buttons. Each banner uses role="alert"
for accessibility.
- Add OnboardingBanner component (16 tests)
- Integrate into dashboard page (5 new tests, 28 total)
- Update UserData interface to include garminConnected, notificationTime
- Test count: 770 tests across 43 files
Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>
