fix:每日推荐修复

server/app/db/models/push_send_log.py

@@ -2,7 +2,7 @@ from __future__ import annotations
 
 from datetime import date, datetime
 
-from sqlalchemy import Date, DateTime, Index, SmallInteger, String, Text, UniqueConstraint, func
+from sqlalchemy import Date, DateTime, Index, Integer, SmallInteger, String, Text, UniqueConstraint, func
 from sqlalchemy.orm import Mapped, mapped_column
 
 from app.db.base import Base
@@ -33,5 +33,10 @@ class PushSendLog(Base):
     status: Mapped[str] = mapped_column(String(length=16), nullable=False, server_default="scheduled", comment="scheduled/sent/failed")
     error: Mapped[str | None] = mapped_column(Text, nullable=True, comment="失败原因（可选）")
 
+    # 发送内容快照（用于观测 + 去重）
+    content_id: Mapped[int | None] = mapped_column(Integer, nullable=True, comment="推送文案内容 ID（可选）")
+    title: Mapped[str | None] = mapped_column(String(length=128), nullable=True, comment="推送标题（可选）")
+    body: Mapped[str | None] = mapped_column(Text, nullable=True, comment="推送正文（可选）")
+
     created_at: Mapped[datetime] = mapped_column(DateTime, nullable=False, server_default=func.now(), comment="创建时间")