fix(website): remove output: export — not needed for Vercel deployment

Static export was added for GitHub Pages but breaks Vercel features
(headers, redirects, sitemap route). Vercel handles SSR natively.

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

Author: 2 people

website/next.config.ts

@@ -6,10 +6,6 @@ const withAnalyzer = withBundleAnalyzer({
 });
 
 const nextConfig: NextConfig = {
-  output: 'export',
-  images: {
-    unoptimized: true,
-  },
   async headers() {
     return [
       {