- Create stub auth API (lib/auth.ts) with simulated delay
- Add PasswordInput component with visibility toggle
- Add SocialAuthButtons component (Google/Apple placeholders)
- Add AuthLayout with split-panel layout and rotating testimonial
- Implement login page with email/password validation and remember me
- Implement signup page with password strength indicator and ToS checkbox
- Implement forgot-password page with email submission and success state
- Implement reset-password page with token validation from query params
- Implement 4-step onboarding flow (plan selection, watchlist, invites, success)
- Add ToastProvider to root app
- Write 28 tests for all auth components and form validation
