feat(seo): add imprint and German URLs to sitemap

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

scripts/static-site.config.cjs

@@ -1,13 +1,13 @@
+const lastModified = '2026-10-15';
+
 module.exports = {
   siteUrl: 'https://fraujulian.xyz',
   sitemap: {
     routes: [
-      {
-        path: '/',
-        lastModified: '2026-04-17',
-        changeFrequency: 'monthly',
-        priority: '1.0',
-      },
+      { path: '/', lastModified, changeFrequency: 'monthly', priority: '1.0' },
+      { path: '/?lang=de', lastModified, changeFrequency: 'monthly', priority: '1.0' },
+      { path: '/imprint', lastModified, changeFrequency: 'yearly', priority: '0.3' },
+      { path: '/imprint?lang=de', lastModified, changeFrequency: 'yearly', priority: '0.3' },
     ],
   },
   robots: {