fix: block 'Заселить' button for future bookings (checkIn > today)

Future bookings can only be checked in via the early check-in flow.

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

src/components/bookings/BookingDetailPanel.tsx

@@ -1272,7 +1272,7 @@ export function BookingDetailPanel({ booking, room, rooms, allBookings, slug, on
             </div>
           )}
 
-          {booking.status === 'confirmed' && (
+          {booking.status === 'confirmed' && booking.checkIn <= today && (
             <button onClick={() => setStatus('checked_in')} className="w-full btn-primary justify-center">
               <CheckCircle size={15} /> Заселить
             </button>