feat(welfare): inactivity_reset_log + inactivity_notification_log 模型

app/models/__init__.py

@@ -27,6 +27,10 @@ from app.models.coupon_state import (  # noqa: F401
     CouponSession,
 )
 from app.models.feedback import Feedback  # noqa: F401
+from app.models.inactivity import (  # noqa: F401
+    InactivityNotificationLog,
+    InactivityResetLog,
+)
 from app.models.invite import InviteRelation  # noqa: F401
 from app.models.invite_fingerprint import InviteFingerprint  # noqa: F401
 from app.models.launch_confirm_sample import LaunchConfirmSample  # noqa: F401

app/models/inactivity.py

@@ -0,0 +1,56 @@
+"""15 天不活跃清零相关表。
+
+- inactivity_reset_log:每次清零一行,记清零前三桶余额 + 原因 + 判定时活跃时间/不活跃天数,
+  供纠纷排查(需求①)。清零同时另写 3 条钱包流水(biz_type=inactivity_reset),资金流可逐笔回溯。
+- inactivity_notification_log:每次预警一行,记推送时余额快照 + 档位 + 通道 + 状态,
+  兼作"预警去重"依据(created_at > last_active)与"待推送"占位 outbox(v1 通道=log)。
+
+append-only,不更新。user_id 只索引、不设外键(同 analytics_event,避免删用户级联/历史留痕)。
+"""
+from __future__ import annotations
+
+from datetime import datetime
+
+from sqlalchemy import DateTime, Integer, String, func
+from sqlalchemy.orm import Mapped, mapped_column
+
+from app.db.base import Base
+
+
+class InactivityResetLog(Base):
+    __tablename__ = "inactivity_reset_log"
+
+    id: Mapped[int] = mapped_column(Integer, primary_key=True, autoincrement=True)
+    user_id: Mapped[int] = mapped_column(Integer, index=True, nullable=False)
+    coin_balance_before: Mapped[int] = mapped_column(Integer, nullable=False)
+    cash_balance_cents_before: Mapped[int] = mapped_column(Integer, nullable=False)
+    invite_cash_balance_cents_before: Mapped[int] = mapped_column(Integer, nullable=False)
+    last_active_at: Mapped[datetime | None] = mapped_column(DateTime(timezone=True), nullable=True)
+    inactive_days: Mapped[int] = mapped_column(Integer, nullable=False)
+    reason: Mapped[str] = mapped_column(String(32), nullable=False)
+    reset_at: Mapped[datetime] = mapped_column(
+        DateTime(timezone=True), server_default=func.now(), index=True, nullable=False
+    )
+
+    def __repr__(self) -> str:  # pragma: no cover
+        return f"<InactivityResetLog id={self.id} user_id={self.user_id} coin={self.coin_balance_before}>"
+
+
+class InactivityNotificationLog(Base):
+    __tablename__ = "inactivity_notification_log"
+
+    id: Mapped[int] = mapped_column(Integer, primary_key=True, autoincrement=True)
+    user_id: Mapped[int] = mapped_column(Integer, index=True, nullable=False)
+    stage: Mapped[int] = mapped_column(Integer, nullable=False)      # 提前天数档(如 7 / 2)
+    inactive_days: Mapped[int] = mapped_column(Integer, nullable=False)
+    coin_balance: Mapped[int] = mapped_column(Integer, nullable=False)
+    cash_balance_cents: Mapped[int] = mapped_column(Integer, nullable=False)
+    invite_cash_balance_cents: Mapped[int] = mapped_column(Integer, nullable=False)
+    channel: Mapped[str] = mapped_column(String(16), nullable=False)   # log / jpush / sms
+    status: Mapped[str] = mapped_column(String(16), nullable=False)    # placeholder / sent / failed
+    created_at: Mapped[datetime] = mapped_column(
+        DateTime(timezone=True), server_default=func.now(), index=True, nullable=False
+    )
+
+    def __repr__(self) -> str:  # pragma: no cover
+        return f"<InactivityNotificationLog id={self.id} user_id={self.user_id} stage={self.stage}>"

tests/test_inactivity_reset.py

@@ -0,0 +1,33 @@
+"""15 天不活跃清零:模型 / 活跃口径 / 清零 / 预警 / 配置 / worker。"""
+from __future__ import annotations
+
+from datetime import date, datetime, timedelta, timezone
+
+from sqlalchemy import select
+
+from app.db.session import SessionLocal
+from app.models.inactivity import InactivityNotificationLog, InactivityResetLog
+
+
+def test_reset_and_notification_models_persist() -> None:
+    db = SessionLocal()
+    try:
+        db.add(InactivityResetLog(
+            user_id=1, coin_balance_before=10, cash_balance_cents_before=20,
+            invite_cash_balance_cents_before=30,
+            last_active_at=datetime(2026, 1, 1, tzinfo=timezone.utc),
+            inactive_days=15, reason="inactive_15d",
+        ))
+        db.add(InactivityNotificationLog(
+            user_id=1, stage=7, inactive_days=8, coin_balance=10,
+            cash_balance_cents=20, invite_cash_balance_cents=30,
+            channel="log", status="placeholder",
+        ))
+        db.commit()
+        r = db.execute(select(InactivityResetLog).where(InactivityResetLog.user_id == 1)).scalar_one()
+        assert r.reason == "inactive_15d" and r.reset_at is not None
+        n = db.execute(select(InactivityNotificationLog).where(InactivityNotificationLog.user_id == 1)).scalar_one()
+        assert n.stage == 7 and n.created_at is not None
+    finally:
+        db.rollback()
+        db.close()