fix: lang switch

app/[locale]/contact/page.tsx

@@ -59,6 +59,21 @@ export default async function ContactPage({ params }: ContactPageProps) {
   const { locale } = await params;
   setRequestLocale(locale);
   const t = await getTranslations({ locale, namespace: 'Contact' });
+
+  // Get translated slug to redirect if user used incorrect static slug
+  const { headers } = await import('next/headers');
+  const headersList = await headers();
+  const urlPath = headersList.get('x-invoke-path') || '';
+  const currentSlug = urlPath.split('/').pop();
+
+  if (currentSlug) {
+    const contactSlugDe = locale === 'de' ? 'kontakt' : 'contact';
+    if (currentSlug !== contactSlugDe && (currentSlug === 'kontakt' || currentSlug === 'contact')) {
+      const { redirect } = await import('next/navigation');
+      redirect(`/${locale}/${contactSlugDe}`);
+    }
+  }
+
   return (
     <div className="flex flex-col min-h-screen bg-neutral-light">
       <JsonLd