Initial commit: Portfolio Website

Vollständige Next.js 15 Portfolio-Website mit:
- Blog-System mit 100+ Artikeln
- Supabase-Integration
- Responsive Design mit Tailwind CSS
- TypeScript-Konfiguration
- Testing-Setup mit Vitest und Playwright

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

src/lib/supabase/client.ts

@@ -0,0 +1,17 @@
+/**
+ * Supabase Browser Client
+ * Client-side Supabase client for authentication and database access
+ */
+
+import { createBrowserClient } from '@supabase/ssr';
+
+/**
+ * Creates a Supabase browser client instance
+ * @returns Supabase client configured with environment variables
+ */
+export function createClient() {
+  return createBrowserClient(
+    process.env.NEXT_PUBLIC_SUPABASE_URL!,
+    process.env.NEXT_PUBLIC_SUPABASE_ANON_KEY!
+  );
+}