feat: initial Funktechnik Schubert website

components/Header.tsx

@@ -0,0 +1,27 @@
+import Link from "next/link";
+
+const navigation = [
+  ["Leistungen", "/leistungen"],
+  ["Funkgeräte-Service", "/funkgeraete-service"],
+  ["Reparatur", "/reparatur"],
+  ["Über uns", "/ueber-uns"],
+  ["Kontakt", "/kontakt"],
+] as const;
+
+export default function Header() {
+  return (
+    <header className="site-header">
+      <div className="container header-inner">
+        <Link href="/" className="brand" aria-label="Funktechnik Schubert Startseite">
+          <span className="brand-mark" aria-hidden="true" />
+          <span>Funktechnik Schubert</span>
+        </Link>
+        <nav className="nav" aria-label="Hauptnavigation">
+          {navigation.map(([label, href]) => (
+            <Link key={href} href={href}>{label}</Link>
+          ))}
+        </nav>
+      </div>
+    </header>
+  );
+}