fix

next.config.ts

@@ -1,6 +1,9 @@
 import type { NextConfig } from "next";
 
 const nextConfig: NextConfig = {
-   output: 'export', 
+   output: 'export',
+   // Emit each route as a folder with index.html (e.g. admin/login/index.html)
+   // so static hosts (nginx) can serve clean URLs without custom rewrite rules.
+   trailingSlash: true,
 };
 export default nextConfig;