fix: remove assetPrefix to resolve CSS loading issues in production

- Remove assetPrefix from next.config.ts to fix static asset loading
- Keep basePath for proper routing on GitHub Pages
- Ensure CSS files are served correctly in production build
- Fix production deployment showing only HTML without styles

Author: mmaxence

next.config.ts

@@ -2,8 +2,7 @@ import type { NextConfig } from "next";
 
 const nextConfig: NextConfig = {
   output: 'export',
-  // basePath: '/design',
-  // assetPrefix: '/design',
+  basePath: '/design',
   images: {
     unoptimized: true,
   },