T01: Frontend Foundation – Nuxt 3 + Tailwind + Design Tokens + Layout + Meta

- Nuxt 3 project with @nuxtjs/tailwindcss module
- Tailwind CSS config with A0 Dark Theme design tokens (CSS custom properties)
- AppHeader: sticky, logo, nav, phone, social icons, mobile burger menu
- AppFooter: 4-column grid (Navigation, Kontakt, Rechtliches, Social)
- HmsLogo: SVG with orange #EC6925 border
- error.vue: 404 page with Seite nicht gefunden
- robots.txt server route: Disallow: /
- Meta: noindex, nofollow, noarchive, nosnippet
- JSON-LD: LocalBusiness schema
- OpenGraph tags
- routeRules: SSR/CSR per route
- Shared components: LoadingSkeleton, EmptyState, ErrorState, LegalContentPage, SpeakerIcon
- 42 vitest tests passing
- Build: 0 errors

frontend/server/routes/robots.txt.ts

@@ -0,0 +1,8 @@
+export default defineEventHandler((event) => {
+  setHeader(event, "Content-Type", "text/plain; charset=utf-8");
+  return [
+    "User-agent: *",
+    "Disallow: /",
+    "",
+  ].join("\n");
+});