Neubau Fundament + Startseite: Designsystem, PHP-Komponenten, Brevo-Formular, Instagram-Sync

- Ordnerstruktur mit public/-Docroot, Deny-.htaccess für app/bin/config/data/storage
- CLAUDE.md mit Leitplanken (self-hosted only, Single Source of Truth, Component-first)
- Design-Tokens aus alter Seite extrahiert (Akzent #e20612, Coolvetica/Abel als woff2)
- Front Controller mit Routen-Register, Sitemap, Canonical, JSON-LD (SportsClub)
- Startseite: Hero, Instagram-Feed (lokaler Cache), Historie/Sportheim, Stats, Partner, Kontakt
- Kontaktformular via PHPMailer/Brevo mit Honeypot + HMAC-Time-Trap (kein reCAPTCHA)
- bin/instagram-sync.php: Scraper mit Strategie-Kette, flock, atomarem Cache, lokalen Bildern

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

app/components/footer.php

@@ -0,0 +1,46 @@
+<?php
+
+declare(strict_types=1);
+
+/**
+ * Footer: Vereinsdaten (NAP aus club.json), Social-Links, Rechtliches.
+ */
+$club = json_load('club');
+$nav = json_load('navigation');
+
+$socialLabels = ['instagram' => 'Instagram', 'facebook' => 'Facebook', 'youtube' => 'YouTube'];
+?>
+    <footer class="site-footer">
+        <div class="container site-footer__grid">
+            <div>
+                <h2 class="site-footer__heading"><?= e($club['legal_name']) ?></h2>
+                <address class="site-footer__address">
+                    <?= e($club['address']['venue']) ?><br>
+                    <?= e($club['address']['street']) ?><br>
+                    <?= e($club['address']['zip']) ?> <?= e($club['address']['city']) ?><br>
+                    <a href="mailto:<?= e($club['email']) ?>"><?= e($club['email']) ?></a>
+                </address>
+            </div>
+            <div>
+                <h2 class="site-footer__heading">Folge uns</h2>
+                <ul class="site-footer__list">
+<?php foreach ($club['social'] as $key => $socialUrl): ?>
+<?php if ($socialUrl): ?>
+                    <li><a href="<?= e($socialUrl) ?>" rel="noopener"><?= e($socialLabels[$key] ?? ucfirst($key)) ?></a></li>
+<?php endif; ?>
+<?php endforeach; ?>
+                </ul>
+            </div>
+            <div>
+                <h2 class="site-footer__heading">Rechtliches</h2>
+                <ul class="site-footer__list">
+<?php foreach ($nav['legal'] as $item): ?>
+                    <li><a href="<?= e(url($item['slug'])) ?>"><?= e($item['label']) ?></a></li>
+<?php endforeach; ?>
+                </ul>
+            </div>
+        </div>
+        <div class="container site-footer__copyright">
+            <p>&copy; <?= e(date('Y')) ?> <?= e($club['legal_name']) ?></p>
+        </div>
+    </footer>