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/components-vite/FloatingPaths.tsx

@@ -0,0 +1,46 @@
+import { motion } from "framer-motion"
+
+export function FloatingPaths({ position }: { position: number }) {
+    const paths = Array.from({ length: 36 }, (_, i) => ({
+        id: i,
+        d: `M-${380 - i * 5 * position} -${189 + i * 6}C-${
+            380 - i * 5 * position
+        } -${189 + i * 6} -${312 - i * 5 * position} ${216 - i * 6} ${
+            152 - i * 5 * position
+        } ${343 - i * 6}C${616 - i * 5 * position} ${470 - i * 6} ${
+            684 - i * 5 * position
+        } ${875 - i * 6} ${684 - i * 5 * position} ${875 - i * 6}`,
+        color: `rgba(var(--accent),${0.1 + i * 0.01})`,
+        width: 0.5 + i * 0.03,
+    }))
+
+    return (
+        <div className="absolute inset-0 pointer-events-none floating-paths">
+            <svg className="w-full h-full text-accent" viewBox="0 0 696 316" fill="none" style={{ transform: 'translateZ(0)' }}>
+                <title>Background Paths</title>
+                {paths.map((path) => (
+                    <motion.path
+                        key={path.id}
+                        d={path.d}
+                        stroke="currentColor"
+                        strokeWidth={path.width}
+                        strokeOpacity={0.1 + path.id * 0.01}
+                        initial={{ pathLength: 0.3, opacity: 0.6 }}
+                        animate={{
+                            pathLength: 1,
+                            opacity: [0.3, 0.6, 0.3],
+                            pathOffset: [0, 1, 0],
+                        }}
+                        transition={{
+                            duration: 20 + Math.random() * 10,
+                            repeat: Number.POSITIVE_INFINITY,
+                            ease: "linear",
+                        }}
+                        style={{ willChange: 'auto' }}
+                    />
+                ))}
+            </svg>
+        </div>
+    )
+}
+