优化查询条件：移除coze_tag非空检查以避免索引失效，仅保留状态过滤

article_auto_image_matching.py

@@ -97,9 +97,7 @@ class ArticleImageMatcher:
                         a.coze_tag,
                         a.department
                     FROM ai_articles a
-                    WHERE a.coze_tag IS NOT NULL 
-                    AND a.coze_tag != ''
-                    AND NOT EXISTS (
+                    WHERE NOT EXISTS (
                         SELECT 1 FROM ai_article_images ai 
                         WHERE ai.article_id = a.id
                     )
@@ -748,6 +746,10 @@ class ArticleImageMatcher:
         
         try:
             # 解析文章标签
+            if not coze_tag:
+                logger.warning(f"文章 {article_id} 没有标签信息，跳过")
+                return False
+            
             article_tags = self.parse_article_tags(coze_tag)
             if not article_tags:
                 logger.warning(f"文章 {article_id} 没有有效标签，跳过")