refactor(category): 移除分类下最新内容查询逻辑

- 删除了CategorySubContent模型的查询操作
- 移除了子内容模型的相关数据获取代码
- 清理了分类关联文章列表的数据处理流程
- 简化了siblingCates方法的业务逻辑
- 优化了代码结构，提升了执行效率

app/common.php

@@ -1496,35 +1496,6 @@ if (!function_exists('getOtherCategoryCategoryId')) {
             if (empty($siblingCates)) {
                 return [];
             }
-
-            // 4. 查询每个分类下最新一条内容
-            $cateSubModel = new \app\model\CategorySubContent();
-            $subContentModel = new \app\model\SubContent();
-
-            foreach ($siblingCates as &$cate) {
-                $cateSubIds = $cateSubModel->where('category_id', $cate['id'])
-                    ->where('seller_id', $sellerId)
-                    ->column('sub_content_id');
-
-                if (!empty($cateSubIds)) {
-                    $content = $subContentModel->whereIn('id', $cateSubIds)
-                        ->where('seller_id', $sellerId)
-                        ->where('is_del', 1)
-                        ->with(['thumbnail' => function ($query) {
-                            $query->field('id,name,url,type');
-                        }])
-                        ->field('id,title,description')
-                        ->order('publish_time desc')
-                        ->limit($limit)
-                        ->select()
-                        ->toArray();
-
-                    $cate['articles'] = $content;
-                } else {
-                    $cate['articles'] = [];
-                }
-            }
-
             return $siblingCates;
         } catch (\Exception $e) {
             return [];