📱 Mobile & Bugfixes
- Mobile sidebar fix: Hamburger menu now opens as a slide-in overlay with backdrop (tap-to-close), auto-closes on menu selection
- Speedtest card colors: Speed card now shows green/yellow/red based on actual vs. booked speed (≥80% green, 50–80% yellow, <50% red). Automatically uses Fritz!Box connection info as reference — no manual settings needed
- Event badge fix: Acknowledge buttons now correctly update the unread badge counter in the sidebar
- New settings: Optional "Booked Download/Upload" fields for manual speed override (i18n: EN/DE/FR/ES)
Tests: 173/173 passing