Migrate from Vite to Next.js 15 with SSR

- Replace Vite + React Router with Next.js 15 App Router
- Implement i18n with next-intl (URL-based: /de, /en, /sr)
- Add SSR/SSG for all pages (48 static pages generated)
- Setup Supabase SSR client for auth
- Migrate all pages: Home, About, Portfolio, Blog, Contact, Login, Dashboard, Imprint, Privacy, Terms
- Add Docker support with standalone output
- Replace i18next with next-intl JSON translations
- Use next/image for optimized images

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

src/i18n/locales-old/en/pages/home/expertise.ts

@@ -0,0 +1,27 @@
+// src/i18n/locales/en/pages/home/expertise.ts
+export const expertise = {
+    title: 'Areas of Expertise',
+    areas: [
+        {
+            title: 'ERP Integration',
+            description: 'Expert in JTL-Wawi implementation, configuration, and optimization. Specialized in inventory management systems and POS integration.',
+            skills: ['JTL-Wawi', 'JTL-WMS', 'JTL-POS', 'Apparel Magic']
+        },
+        {
+            title: 'Development',
+            description: 'Full-stack development with focus on Python automation, React frontends, and database design.',
+            skills: ['Python', 'React/Next.js', 'MariaDB', 'Docker']
+        },
+        {
+            title: 'E-Commerce',
+            description: 'Extensive experience with various e-commerce platforms and marketplace integrations.',
+            skills: ['Shopify', 'Shopware', 'WooCommerce', 'API Integration']
+        },
+        {
+            title: 'Digital Marketing',
+            description: 'Strategic approach to digital marketing with focus on automation and analytics.',
+            skills: ['Google Ads', 'Meta Ads', 'SEO', 'Analytics']
+        }
+    ]
+} as const;
+export type ExpertiseTranslations = typeof expertise;