perf: optimize portfolio runtime delivery

Replace the blocking asset loader with progressive rendering, defer expensive media and Three.js work, and reduce hydration and animation costs. Move deployment from a static Nginx export to the standalone Next.js runtime with optimized dynamic images.

next.config.mjs

@@ -1,8 +1,15 @@
 /** @type {import('next').NextConfig} */
 const nextConfig = {
-  output: 'export',
+  output: 'standalone',
+  turbopack: {
+    root: process.cwd(),
+  },
   images: {
-    unoptimized: true,
+    formats: ['image/webp'],
+    qualities: [60, 75, 85],
+    deviceSizes: [360, 390, 640, 768, 1024, 1280, 1440],
+    imageSizes: [32, 48, 64, 72, 96, 128, 192, 256, 320],
+    minimumCacheTTL: 86_400,
   },
 };