Complete Next.js conversion - removed sql.js, updated routing, fixed Tailwind

Co-authored-by: johndoe6345789 <224850594+johndoe6345789@users.noreply.github.com>

next.config.js

@@ -0,0 +1,14 @@
+/** @type {import('next').NextConfig} */
+const nextConfig = {
+  output: process.env.BUILD_STATIC ? 'export' : 'standalone',
+  basePath: process.env.NEXT_PUBLIC_BASE_PATH || '',
+  turbopack: {},
+  images: {
+    unoptimized: true,
+  },
+  experimental: {
+    optimizePackageImports: ['@radix-ui/react-icons', '@phosphor-icons/react'],
+  },
+};
+
+export default nextConfig;