fix(feed): pin client highlights atop Industry News for 48h

src/app/home-page/components/ArticleFeed.tsx

@@ -171,14 +171,18 @@ export default function ArticleFeed({ initialPosts = [] }: ArticleFeedProps) {
     return matchCat && matchSource && matchSearch && matchDate;
   });
 
-  // Recent: strict publish-date order (newest first). Promoted badges stay
+  // Sort filtered articles based on sortOrder. For every order we honor
-  // on cards but never reorder the feed. Trending/commented keep promo tier.
+  // the promoted-tier hierarchy first (premium > advertiser > general) so
+  // client highlights stay atop Industry News for 48h, then sink by date.
   function promotedTier(a: ArticleItem): number {
     if (a.promoted_kind === "premium") return 0;
     if (a.promoted_kind === "client") return 1;
     return 2;
   }
   const sortedFiltered = [...filtered].sort((a, b) => {
+    const ta = promotedTier(a);
+    const tb = promotedTier(b);
+    if (ta !== tb) return ta - tb;
     if (sortOrder === "recent") {
       const da = parseArticleDate(a.date);
       const db = parseArticleDate(b.date);
@@ -187,9 +191,6 @@ export default function ArticleFeed({ initialPosts = [] }: ArticleFeedProps) {
       if (!db) return -1;
       return db.getTime() - da.getTime();
     }
-    const ta = promotedTier(a);
-    const tb = promotedTier(b);
-    if (ta !== tb) return ta - tb;
     if (sortOrder === "trending") {
       // Trending: FEATURED category gets a boost, then by recency
       const featuredBoost = (art: ArticleItem) => (art.category === "FEATURED" ? 2 : 0);

src/lib/promoted-articles.ts

@@ -260,7 +260,23 @@ export async function decorateHomepageFeed<T extends PromotableArticle>(
     return { article: a, promoted_kind: null, promoted_until: null };
   });
 
-  // Preserve caller order (wp_published_at desc). Promotion flags are visual
+  // Sort: premium first (by position asc), then client (by date desc), then general (by date desc)
-  // badges only — the Industry News feed stays newest-to-oldest.
+  function tier(d: DecoratedArticle<T>): number {
+    if (d.promoted_kind === "premium") return 0;
+    if (d.promoted_kind === "client") return 1;
+    return 2;
+  }
+  function dateTs(d: DecoratedArticle<T>): number {
+    const t = new Date(d.article.date).getTime();
+    return isNaN(t) ? 0 : t;
+  }
+  decorated.sort((a, b) => {
+    const ta = tier(a);
+    const tb = tier(b);
+    if (ta !== tb) return ta - tb;
+    if (ta === 0) return (a.promoted_position ?? 999) - (b.promoted_position ?? 999);
+    return dateTs(b) - dateTs(a); // newest first
+  });
+
   return decorated;
 }