nextjs assets fix

nextjs/next.config.mjs

@@ -3,8 +3,10 @@ const uploadMaxBytes = Number.parseInt(process.env.UPLOAD_MAX_BYTES || '0', 10);
 const actionBodySizeLimit = Number.isFinite(uploadMaxBytes) && uploadMaxBytes > 0
   ? `${uploadMaxBytes}`
   : '1gb';
+const managementPath = '/manage';
 
 const nextConfig = {
+  assetPrefix: managementPath,
   poweredByHeader: false,
   experimental: {
     serverActions: {