chore: 集成 LLM 增强 — config/main/articles schema/workers + .env.example 加 Agnes 配置

backend/app/api/articles.py

@@ -169,14 +169,20 @@ async def get_article(
         title_zh=article.title_zh,
         body_zh_html=article.body_zh_html,
         body_zh_text=article.body_zh_text,
+        body_zh_formatted=article.body_zh_formatted,
         summary_zh=article.summary_zh,
         lang_src=article.lang_src,
         author=article.author,
         image_url=article.image_url,
+        image_ai_url=article.image_ai_url,
         translation_status=article.translation_status,
         translation_engine=article.translation_engine,
         translated_at=article.translated_at,
         category=article.category,
+        format_status=article.format_status,
+        classify_status=article.classify_status,
+        image_ai_status=article.image_ai_status,
+        commentary_status=article.commentary_status,
         commentary=article.commentary,
         entities=article.entities,
         sentiment=article.sentiment,