a bit more cleanup

app/feed.atom/route.ts

@@ -3,7 +3,7 @@ import { buildFeed } from "../../lib/helpers/build-feed";
 export const dynamic = "force-static";
 
 export const GET = async () => {
-  return new Response(await buildFeed({ type: "atom" }), {
+  return new Response((await buildFeed()).atom1(), {
     headers: {
       "content-type": "application/atom+xml; charset=utf-8",
     },