Fix base path and restore wasm engine

next.config.ts

@@ -1,7 +1,11 @@
 import type { NextConfig } from "next";
 
+const basePath = process.env.NEXT_PUBLIC_BASE_PATH || "";
+
 const nextConfig: NextConfig = {
   output: "export",
+  basePath,
+  assetPrefix: basePath || undefined,
 };
 
 export default nextConfig;