feat: 按发布时间倒序排列AI推荐结果

frontend/src/components/Dashboard-AI.vue

@@ -224,10 +224,18 @@ const fetchAIRecommendations = async () => {
         title: rec.title,
         url: bid?.url || '',
         source: bid?.source || '',
-        confidence: rec.confidence
+        confidence: rec.confidence,
+        publishDate: bid?.publishDate
       }
     })
 
+    // 按发布时间倒序排列
+    recommendations.sort((a: AIRecommendation, b: AIRecommendation) => {
+      if (!a.publishDate) return 1
+      if (!b.publishDate) return -1
+      return new Date(b.publishDate).getTime() - new Date(a.publishDate).getTime()
+    })
+
     aiRecommendations.value = recommendations
 
     // 保存推荐结果到数据库