feat: Add LEVIS Holzbau — Kinder-Holzwerk-Website (Port 3013)

Neue statische Website fuer Kinder (6-12 Jahre) mit 8 Holzprojekten,
SVG-Illustrationen, Sicherheitshinweisen und kindgerechtem Design.
Next.js 15 + Tailwind + Framer Motion.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

levis-holzbau/components/DifficultyBadge.tsx

@@ -0,0 +1,15 @@
+import { Hammer } from 'lucide-react'
+
+export function DifficultyBadge({ level }: { level: 1 | 2 | 3 }) {
+  const labels = ['Anfaenger', 'Fortgeschritten', 'Profi']
+  return (
+    <div className="flex items-center gap-1" title={labels[level - 1]}>
+      {Array.from({ length: 3 }).map((_, i) => (
+        <Hammer
+          key={i}
+          className={`w-4 h-4 ${i < level ? 'text-primary' : 'text-gray-300'}`}
+        />
+      ))}
+    </div>
+  )
+}