Backend:
- Fix GetAllAdminBookingsHandler and SearchAdminBookingsHandler to
return totalPages in response
- Auto-record patch tests when booking status progresses to "completed"
- Add GET/POST /api/admin/users/{id}/patch-tests endpoints
Frontend:
- BookingsCard: proper pagination with 4 per page, prev/next buttons
- UsersCard, BookingCreateModal, WalkInCreateModal: per_page=4 for user
search
- Add PatchTestModal for manual patch test entry in UserModal
- Hide patch test section when user has no eligible services
Database:
- Add UNIQUE constraint on user_service_patch_tests(user_id, service_id)