fix(tickets): use integer 1 for isGuest in admin guest invite

Postgres is_guest column is integer; passing JS boolean true caused
"invalid input syntax for type integer" 500 on POST /api/tickets/admin/guest.

Made-with: Cursor

backend/src/routes/tickets.ts

@@ -1476,7 +1476,7 @@ ticketsRouter.post('/admin/guest', requireAuth(['admin', 'organizer', 'staff']),
     attendeePhone: data.phone && data.phone.trim() ? data.phone.trim() : null,
     preferredLanguage: data.preferredLanguage || null,
     status: 'confirmed',
-    isGuest: true,
+    isGuest: 1,
     qrCode,
     checkinAt: null,
     adminNote: data.adminNote || null,

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

@@ -1024,7 +1024,7 @@ export default function AdminEventDetailPage() {
                             <td className="px-4 py-2.5">
                               <div className="flex items-center gap-1 flex-wrap">
                                 {getStatusBadge(ticket.status, true)}
-                                {ticket.isGuest && (
+                                {!!ticket.isGuest && (
                                   <span className="px-1.5 py-0.5 text-[10px] rounded-full bg-amber-100 text-amber-700 font-medium">Guest</span>
                                 )}
                               </div>
@@ -1089,7 +1089,7 @@ export default function AdminEventDetailPage() {
                         </div>
                         <div className="flex items-center gap-1.5 flex-shrink-0 flex-wrap justify-end">
                           {getStatusBadge(ticket.status, true)}
-                          {ticket.isGuest && (
+                          {!!ticket.isGuest && (
                             <span className="px-1.5 py-0.5 text-[10px] rounded-full bg-amber-100 text-amber-700 font-medium">Guest</span>
                           )}
                         </div>