Update authentication redirect to use environment variable for site URL, ensuring proper redirection based on configuration. This change enhances flexibility for different deployment environments.

app/auth/callback/route.ts

@@ -13,5 +13,6 @@ export async function GET(request: NextRequest) {
   }
 
   // URL to redirect to after sign in process completes
-  return NextResponse.redirect(new URL('/analytics', request.url));
+  const siteUrl = process.env.NEXT_PUBLIC_SITE_URL || 'https://main.upj.to';
+  return NextResponse.redirect(new URL('/analytics', siteUrl));
 }