fix(service-desk): add try-catch + fix JSON serialization of entry object

The issueTicket response was passing the raw Model object to json(),
which could fail serialization. Now returns entry_id instead, and
wraps recordEntry in try-catch for proper error reporting.
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

app/Modules/SportsActivity/Controllers/ServiceDeskController.php

@@ -97,6 +97,7 @@ class ServiceDeskController extends Controller
             }
         }
 
+        try {
             $entry = GuestEntryService::recordEntry([
                 'carnet_id'         => $carnetId,
                 'member_id'         => $memberId,
@@ -113,10 +114,13 @@ class ServiceDeskController extends Controller
                 'recorded_by'       => $employee ? (int) $employee->id : null,
                 'status'            => 'active',
             ]);
+        } catch (\Throwable $e) {
+            return $this->json(['success' => false, 'error' => 'فشل الإصدار: ' . $e->getMessage()]);
+        }
 
         return $this->json([
             'success' => true,
-            'entry'   => $entry,
+            'entry_id' => (int) $entry->id,
             'message' => 'تم إصدار التذكرة بنجاح',
         ]);
     }