fix:文明

server/app/db/models/content_risk_flag.py

@@ -0,0 +1,51 @@
+from __future__ import annotations
+
+from datetime import datetime
+
+from sqlalchemy import DateTime, ForeignKey, Index, UniqueConstraint, func
+from sqlalchemy.orm import Mapped, mapped_column
+
+from app.db.base import Base
+
+
+class ContentRiskFlag(Base):
+    """
+    内容风险标记（risk_flags）关联表。
+
+    命名约束（语义来源：句子文案打分规则）：
+    - 仅允许 `unsafe_for_*` / `block_*` / `soft_*` 前缀
+    - 旧 flag（如 `block_stage_unknown`）需在写入/读取层做映射
+    """
+
+    __tablename__ = "content_risk_flags"
+
+    __table_args__ = (
+        UniqueConstraint("content_id", "flag", name="uniq_content_flag"),
+        Index("idx_flag", "flag"),
+        Index("idx_content_id", "content_id"),
+    )
+
+    id: Mapped[int] = mapped_column(
+        primary_key=True,
+        autoincrement=True,
+        comment="主键",
+    )
+
+    content_id: Mapped[int] = mapped_column(
+        ForeignKey("contents.content_id", ondelete="CASCADE"),
+        nullable=False,
+        comment="FK -> contents.content_id",
+    )
+
+    flag: Mapped[str] = mapped_column(
+        nullable=False,
+        comment="风险标记（unsafe_for_* / block_* / soft_*）",
+    )
+
+    created_at: Mapped[datetime] = mapped_column(
+        DateTime,
+        nullable=False,
+        server_default=func.now(),
+        comment="创建时间",
+    )
+