Header-Navigation: Logo links, Nav-Punkte zentriert (3-Spalten-Grid), CTAs rechts (Kontakt outline + Mitglied werden), responsiv: Burger + Overlay-CTAs unter 600px

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>

app/components/header.php

@@ -6,6 +6,7 @@ declare(strict_types=1);
  * Seitenkopf mit Logo und Navigation. Props: $current (Slug).
  */
 $club = json_load('club');
+$nav = json_load('navigation');
 ?>
     <header class="site-header">
         <div class="container site-header__inner">
@@ -13,5 +14,12 @@ $club = json_load('club');
                 <img class="site-header__logo" src="<?= e(asset('img/logo.svg')) ?>" alt="" width="75" height="97">
             </a>
 <?php component('nav', ['current' => $current]); ?>
+<?php if (!empty($nav['ctas'])): ?>
+            <div class="site-header__actions">
+<?php foreach ($nav['ctas'] as $cta): ?>
+<?php component('cta', ['cta' => $cta]); ?>
+<?php endforeach; ?>
+            </div>
+<?php endif; ?>
         </div>
     </header>