Update Kirby and add password guard

private/kirby/config/areas/account/buttons.php

@@ -0,0 +1,13 @@
+<?php
+
+use Kirby\Cms\App;
+use Kirby\Cms\User;
+use Kirby\Panel\Ui\Buttons\ViewButton;
+
+return [
+	'user.theme' => function (App $kirby, User $user) {
+		if ($kirby->user()->is($user) === true) {
+			return new ViewButton(component: 'k-theme-view-button');
+		}
+	}
+];