- Rename 'Events' to 'Tastings' in nav - Sessions page: Create, list, delete sessions with sticky header - Buddies page: Add, search, delete buddies with linked/unlinked sections - Both pages match new home view design language
- Add missing nav keys to types.ts, de.ts, en.ts (sessions, buddies, stats, wishlist) - Add LanguageSwitcher back to authenticated header - Create /sessions page with SessionList - Create /buddies page with BuddyList - Create /stats page with StatsDashboard - Create /wishlist placeholder page
