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/Badge.tsx

@@ -0,0 +1,41 @@
+import * as React from "react"
+import { cva, type VariantProps } from "class-variance-authority"
+import { type ClassValue, clsx } from "clsx"
+import { twMerge } from "tailwind-merge"
+
+// Fügen Sie diese Funktion direkt in die Datei ein
+function cn(...inputs: ClassValue[]) {
+    return twMerge(clsx(inputs))
+}
+
+const badgeVariants = cva(
+    "inline-flex items-center rounded-full border px-2.5 py-0.5 text-xs font-semibold transition-colors focus:outline-none focus:ring-2 focus:ring-ring focus:ring-offset-2",
+    {
+        variants: {
+            variant: {
+                default:
+                    "border-transparent bg-primary text-primary-foreground hover:bg-primary/80",
+                secondary:
+                    "border-transparent bg-secondary text-secondary-foreground hover:bg-secondary/80",
+                destructive:
+                    "border-transparent bg-destructive text-destructive-foreground hover:bg-destructive/80",
+                outline: "text-foreground",
+            },
+        },
+        defaultVariants: {
+            variant: "default",
+        },
+    }
+)
+
+export interface BadgeProps
+    extends React.HTMLAttributes<HTMLDivElement>,
+        VariantProps<typeof badgeVariants> {}
+
+function Badge({ className, variant, ...props }: BadgeProps) {
+    return (
+        <div className={cn(badgeVariants({ variant }), className)} {...props} />
+    )
+}
+
+export { Badge, badgeVariants }