Backend and frontend updates: auth, email, payments, events, tickets; carrousel images; mobile event detail layout; i18n

frontend/src/app/admin/events/[id]/page.tsx

@@ -678,6 +678,11 @@ export default function AdminEventDetailPage() {
                         <td className="px-6 py-4">
                           <p className="font-medium">{ticket.attendeeFirstName} {ticket.attendeeLastName || ''}</p>
                           <p className="text-sm text-gray-500">ID: {ticket.id.slice(0, 8)}...</p>
+                          {ticket.bookingId && (
+                            <p className="text-xs text-purple-600 mt-1" title={`Booking: ${ticket.bookingId}`}>
+                              📦 {locale === 'es' ? 'Reserva grupal' : 'Group booking'}
+                            </p>
+                          )}
                         </td>
                         <td className="px-6 py-4">
                           <p className="text-sm">{ticket.attendeeEmail}</p>