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>

vitest.setup.ts

@@ -0,0 +1,20 @@
+// Vitest setup file
+// This file runs before each test file
+
+// Mock next-intl for testing
+vi.mock('next-intl', () => ({
+  useTranslations: () => (key: string) => {
+    if (key === 'title') return 'Test Title';
+    if (key === 'raw') return () => [];
+    return key;
+  },
+  useLocale: () => 'en',
+}));
+
+// Mock framer-motion to avoid animation issues in tests
+vi.mock('framer-motion', () => ({
+  motion: {
+    div: ({ children, ...props }: any) => <div {...props}>{children}</div>,
+  },
+  AnimatePresence: ({ children }: any) => <>{children}</>,
+}));