feat(api): add portal_events to auth/me endpoint

Add persons() relationship to User model and include portal_events
array in MeResource response, mapping each person record to its
event and organisation data for the portal frontend.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

api/app/Http/Controllers/Api/V1/MeController.php

@@ -13,7 +13,12 @@ final class MeController extends Controller
 {
     public function __invoke(Request $request): JsonResponse
     {
-        $user = $request->user()->load(['organisations', 'roles', 'permissions']);
+        $user = $request->user()->load([
+            'organisations',
+            'roles',
+            'permissions',
+            'persons' => fn ($q) => $q->with(['event:id,name,slug,start_date,end_date,organisation_id', 'event.organisation:id,name']),
+        ]);
 
         return $this->success(new MeResource($user));
     }