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/about.ts

@@ -0,0 +1,13 @@
+// src/i18n/locales/en/pages/home/about.ts
+export const about = {
+    title: 'About Damjan Savić - Senior Fullstack Developer & Digital Solutions Consultant',
+    content: 'Damjan Savić is a Senior Fullstack Developer and Digital Solutions Consultant with over 10 years of experience in Enterprise Software Development. Based in Cologne, Germany, Damjan Savić specializes in developing scalable cloud-native solutions, AI integration with OLLAMA and Large Language Models, and digital transformation. Damjan Savić combines deep expertise in Python, React, TypeScript, and Microservices Architecture with a holistic consulting approach. From strategic IT consulting to implementing SAP/ERP integrations and developing custom e-commerce platforms - Damjan Savić delivers innovative solutions for complex business requirements. As a DevOps Engineer, Damjan Savić implements modern CI/CD pipelines and container orchestration with Docker and Kubernetes to ensure highest quality and efficiency. Damjan Savić transforms businesses through intelligent automation, cloud architecture, and cutting-edge technology solutions.',
+    image: {
+        alt: 'Damjan Savić - Senior Fullstack Developer & Digital Solutions Consultant | Software Architect | Cloud Expert | AI Specialist'
+    },
+    buttons: {
+        learnMore: 'Learn more',
+        downloadCV: 'Download CV'
+    }
+} as const;
+export type AboutTranslations = typeof about;