fix and update

apps/frontend/app/downloads/windows/route.ts

@@ -1,15 +1,8 @@
-import { NextRequest, NextResponse } from 'next/server';
+import type { NextRequest } from 'next/server';
+import { proxyReleaseDownload } from '@/lib/proxy-release-download';
 
 export const runtime = 'nodejs';
 
-function resolveApiBase(request: NextRequest) {
-  const internal = process.env.INTERNAL_API_URL?.replace(/\/$/, '');
-  if (internal) return internal;
-  const origin = request.nextUrl.origin;
-  return `${origin}/idp-api`;
-}
-
 export async function GET(request: NextRequest) {
-  const target = `${resolveApiBase(request)}/releases/download/windows`;
-  return NextResponse.redirect(target, 302);
+  return proxyReleaseDownload(request, 'windows');
 }