Feed: strict newest-first sort; promos are badges only

src/app/api/public/posts/route.ts

@@ -33,8 +33,7 @@ export async function GET(request: Request) {
     source: "imported" as const,
   }));
 
-  // Decorate + reorder so premium and current-advertiser stories surface
-  // at the top of the feed.
+  // Decorate with promotion badges; preserve wp_published_at order.
   const decorated = await decorateHomepageFeed("avbeat", base);
   const payload = decorated.map((d) => ({
     ...d.article,