feat: add email verification, profile pictures, deposits, and calendar

export
Backend:
- Add email verification code generation and verification endpoints
- Add profile picture upload with S3 storage and image processing
- Add deposit_required field to users with 48h advance booking
  requirement
- Add loyalty stamps that accumulate on completed bookings
- Auto-transition bookings: confirmed → in_progress → completed
- Add booking cancellation handler with no-show detection
- Add ICS calendar file download endpoint for bookings
- Sync bookings to CalDAV on confirmation
  Frontend:
- Add schedule page route
- Add avatar and image-cropper UI components
- Update shadcn-svelte components (button, dialog)
- Add "Add to Calendar" button in booking modal
  Database:
- Add verification_codes table
- Add profile_pic_url, loyalty_stamps, deposits_required to users
- Various schema updates

frontend/src/lib/components/layout/NavBar.svelte

@@ -8,12 +8,13 @@
 	const links = [
 		{ href: '/', label: 'Home', showWhen: 'always', width: 'w-12' },
 		{ href: '/prices', label: 'Price List', showWhen: 'guest', width: 'w-20' },
-		{ href: '/book', label: 'Book your appointment', showWhen: 'auth', width: 'w-36' },
+		{ href: '/schedule', label: 'My Schedule', showWhen: 'auth', width: 'w-24' },
+		{ href: '/book', label: 'Book an appointment', showWhen: 'auth', width: 'w-36' },
 		{ href: '/portfolio', label: 'Portfolio', showWhen: 'always', width: 'w-20' },
-		{ href: '/contact', label: 'Contact', showWhen: 'always', width: 'w-16' },
-		{ href: '/account', label: 'My Account', showWhen: 'auth', width: 'w-24' },
 		{ href: '/admin', label: 'Admin Dashboard', showWhen: 'admin', width: 'w-28' },
-		{ href: '/today', label: 'Today', showWhen: 'admin', width: 'w-28' }
+		{ href: '/today', label: 'Today', showWhen: 'admin', width: 'w-28' },
+		{ href: '/contact', label: 'Contact', showWhen: 'always', width: 'w-16' },
+		{ href: '/account', label: 'My Account', showWhen: 'auth', width: 'w-24' }
 	];
 
 	let mobileMenuOpen = $state(false);