fix(articles): moveSortOrder 排序方向与 getFeatured 对齐（published_at DESC）

cfc-backend/src/main/java/com/etotem/cfc/service/ArticleService.java

@@ -588,7 +588,7 @@ public class ArticleService {
                 .eq(Article::getStatus, "published")
                 .eq(Article::getIsFeatured, 1)
                 .orderByAsc(Article::getSortOrder)
-                .orderByAsc(Article::getPublishedAt);
+                .orderByDesc(Article::getPublishedAt);
         List<Article> featured = articleMapper.selectList(listWrapper);
 
         int idx = -1;
@@ -625,7 +625,7 @@ public class ArticleService {
                 .eq(Article::getStatus, "published")
                 .eq(Article::getIsFeatured, 1)
                 .orderByAsc(Article::getSortOrder)
-                .orderByAsc(Article::getPublishedAt);
+                .orderByDesc(Article::getPublishedAt);
         List<Article> sorted = articleMapper.selectList(renumWrapper);
         Date now = new Date();
         for (int i = 0; i < sorted.size(); i++) {