PLACEHOLDER: Screenshot will be generated when tests run with full environment

Expected screenshot content:
- URL: http://localhost:3000/dashboard
- Page title: "Welcome to Sunrise Tennis Club" (or active club name)
- Header: ClubSwitcher button showing "Sunrise Tennis Club" with badge
- Dashboard cards showing:
  * My Open Tasks (count)
  * My Upcoming Shifts (count)
- Navigation sidebar with Dashboard, Tasks, Shifts, Members links
- Sign Out button in header

Test scenario captured:
1. Unauthenticated user navigates to /dashboard
2. Redirected to /login
3. Clicks "Sign in with Keycloak"
4. Redirected to Keycloak login page (localhost:8080)
5. Enters credentials: admin@test.com / testpass123
6. Submits login form
7. Redirected back to app at /select-club
8. Selects first club card
9. Redirected to /dashboard
10. Dashboard loads with club-specific data
