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/about/schema.ts

@@ -0,0 +1,31 @@
+export const schema = {
+    page: {
+        name: 'About Damjan Savić',
+        description: 'Learn more about Damjan Savić, a certified JTL expert with extensive experience in e-commerce and warehouse management solutions.'
+    },
+    person: {
+        jobTitle: 'JTL Integration Expert',
+        description: 'With extensive experience in integrating and optimizing e-commerce systems, I help companies with the digital transformation of their business processes.',
+        languages: {
+            english: 'English',
+            serbian: 'Serbian',
+            german: 'German',
+            french: 'French',
+            spanish: 'Spanish',
+            russian: 'Russian'
+        },
+        skills: {
+            python: 'Python',
+            googleAds: 'Google Ads',
+            metaAds: 'Meta Ads',
+            shopware: 'Shopware',
+            shopify: 'Shopify',
+            wooCommerce: 'WooCommerce',
+            jtlWawi: 'JTL WAWI',
+            serverAdmin: 'Server Administration',
+            airflow: 'AirFlow'
+        }
+    }
+} as const;
+// Type for type safety
+export type SchemaTranslations = typeof schema;