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/Models/User.php

@@ -80,6 +80,11 @@ final class User extends Authenticatable
         return $this->hasMany(PersonIdentityMatch::class, 'matched_user_id');
     }
 
+    public function persons(): HasMany
+    {
+        return $this->hasMany(Person::class, 'user_id');
+    }
+
     public function organisationTags(): HasMany
     {
         return $this->hasMany(UserOrganisationTag::class);