fix(orm): Article 模型加 body_zh_formatted/image_ai_url/4 个 *_status 字段(同步 0002 migration)

backend/app/models/article.py

@@ -48,6 +48,7 @@ class Article(Base):
     title_zh: Mapped[str | None] = mapped_column(Text)
     body_zh_html: Mapped[str | None] = mapped_column(Text)
     body_zh_text: Mapped[str | None] = mapped_column(Text)
+    body_zh_formatted: Mapped[str | None] = mapped_column(Text)  # LLM 排版后
     summary_zh: Mapped[str | None] = mapped_column(Text)
 
     # === 翻译状态 ===
@@ -60,6 +61,23 @@ class Article(Base):
     translation_chars: Mapped[int] = mapped_column(Integer, default=0, nullable=False)
     translated_at: Mapped[datetime | None] = mapped_column(DateTime(timezone=True))
 
+    # === LLM 增强状态(每个独立状态)===
+    format_status: Mapped[str] = mapped_column(
+        String(16), default="n/a", nullable=False
+    )  # pending/ok/failed/n/a
+    classify_status: Mapped[str] = mapped_column(
+        String(16), default="n/a", nullable=False
+    )
+    image_ai_status: Mapped[str] = mapped_column(
+        String(16), default="n/a", nullable=False
+    )
+    commentary_status: Mapped[str] = mapped_column(
+        String(16), default="n/a", nullable=False
+    )
+
+    # === LLM 增强内容 ===
+    image_ai_url: Mapped[str | None] = mapped_column(Text)  # AI 生成的插图
+
     # === ML 字段(预留,MVP 全 null)===
     category: Mapped[str | None] = mapped_column(String(32), index=True)
     commentary: Mapped[str | None] = mapped_column(Text)