remove unused files

next.config.mjs

@@ -1,6 +1,22 @@
 /** @type {import('next').NextConfig} */
 const nextConfig = {
   reactStrictMode: true,
+  async headers() {
+    return [
+      {
+        source: '/:path*',
+        headers: [
+          { key: 'X-Content-Type-Options', value: 'nosniff' },
+          { key: 'X-Frame-Options', value: 'SAMEORIGIN' },
+          { key: 'Referrer-Policy', value: 'strict-origin-when-cross-origin' },
+          {
+            key: 'Permissions-Policy',
+            value: 'camera=(), microphone=(), geolocation=()',
+          },
+        ],
+      },
+    ]
+  },
 };
 
 export default nextConfig;