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/sr/pages/about/schema.ts

@@ -0,0 +1,31 @@
+export const schema = {
+    page: {
+        name: 'O Damjanu Saviću',
+        description: 'Saznajte više o Damjanu Saviću, sertifikovanom JTL ekspertu sa velikim iskustvom u e-trgovini i sistemima za upravljanje robom.'
+    },
+    person: {
+        jobTitle: 'JTL integracioni ekspert',
+        description: 'Sa bogatim iskustvom u integraciji i optimizaciji e-commerce sistema, pomažem kompanijama u digitalnoj transformaciji njihovih poslovnih procesa.',
+        languages: {
+            english: 'Engleski',
+            serbian: 'Srpski',
+            german: 'Nemački',
+            french: 'Francuski',
+            spanish: 'Španski',
+            russian: 'Ruski'
+        },
+        skills: {
+            python: 'Python',
+            googleAds: 'Google Ads',
+            metaAds: 'Meta Ads',
+            shopware: 'Shopware',
+            shopify: 'Shopify',
+            wooCommerce: 'WooCommerce',
+            jtlWawi: 'JTL WAWI',
+            serverAdmin: 'Administracija servera',
+            airflow: 'AirFlow'
+        }
+    }
+} as const;
+// Tip za tipsku sigurnost
+export type SchemaTranslations = typeof schema;