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/de/pages/about/index.ts

@@ -0,0 +1,28 @@
+import { hero } from './hero';
+import { journey } from './journey';
+import { schema } from './schema';
+import { skillbar } from './skillbar';
+import { skillgroup } from './skillgroup';
+import { skills } from './skills';
+import { workflow } from './workflow';
+export const about = {
+    seo: {
+        title: 'Über Mich - Damjan Savić | Fullstack Entwickler & KI-Spezialist',
+        description: 'Erfahren Sie mehr über Damjan Savić - AI & Automation Specialist mit Fokus auf Voice AI, autonome Agenten und Prozessautomatisierung aus Köln.'
+    },
+    hero,
+    journey,
+    schema,
+    skillbar,
+    skillgroup,
+    skills,
+    workflow
+} as const;
+// Typen exportieren
+export type { HeroTranslations } from './hero';
+export type { JourneyTranslations } from './journey';
+export type { SchemaTranslations } from './schema';
+export type { SkillBarTranslations } from './skillbar';
+export type { SkillGroupTranslations } from './skillgroup';
+export type { SkillsTranslations } from './skills';
+export type { WorkflowTranslations } from './workflow';