- Wrap /connection/qr route in ProtectedRoute with Layout
- Remove fullscreen overlay and custom close button
- Add AdminBackButton with replace prop to avoid history cycles
- Use replace navigation from Connection to QR page
- Add replace prop support to AdminBackButton component
Major changes:
- Redesign cabinet with Linear-style components and top navigation
- Replace detail modals with dedicated pages (users, broadcasts, email templates)
- Add email channel support for broadcasts
- Remove pull-to-refresh, improve drag-and-drop on touch devices
- Fix Telegram Mini App: fullscreen, back button, scroll restoration
- Unify admin pages color scheme to design system
- Mobile-first improvements: horizontal tabs for settings, better touch targets