style(backend): apply ruff format

apps/backend/models/user.py

@@ -10,21 +10,41 @@ class User(Base):
     __tablename__ = "users"
 
     id = Column(Integer, primary_key=True, index=True, autoincrement=True)
-    jwt_sub = Column(String(200), unique=True, nullable=True, index=True, comment="QQ 扫码登录的唯一用户标识（注册时为空）")
-    alias = Column(String(50), unique=True, nullable=False, index=True, comment="用户别名（用于登录）")
+    jwt_sub = Column(
+        String(200),
+        unique=True,
+        nullable=True,
+        index=True,
+        comment="QQ 扫码登录的唯一用户标识（注册时为空）",
+    )
+    alias = Column(
+        String(50), unique=True, nullable=False, index=True, comment="用户别名（用于登录）"
+    )
     email = Column(String(100), nullable=True, comment="用户邮箱（用于接收通知）")
     password_hash = Column(String(200), nullable=True, comment="密码哈希（bcrypt加密）")
     authorization = Column(Text, nullable=True, comment="当前有效的 QQ Token")
     jwt_exp = Column(String(20), default="0", comment="Token 过期时间戳")
-    token_expiring_notified = Column(Boolean, default=False, nullable=False, comment="Token 即将过期提醒是否已发送（过期前30分钟）")
-    token_expired_notified = Column(Boolean, default=False, nullable=False, comment="Token 已过期提醒是否已发送（过期后30分钟内）")
+    token_expiring_notified = Column(
+        Boolean,
+        default=False,
+        nullable=False,
+        comment="Token 即将过期提醒是否已发送（过期前30分钟）",
+    )
+    token_expired_notified = Column(
+        Boolean,
+        default=False,
+        nullable=False,
+        comment="Token 已过期提醒是否已发送（过期后30分钟内）",
+    )
     role = Column(String(20), default="user", index=True, comment="角色: user/admin")
     is_approved = Column(Boolean, default=False, index=True, comment="是否已通过管理员审批")
 
     # 账户锁定相关字段
     failed_login_attempts = Column(Integer, default=0, nullable=False, comment="连续登录失败次数")
     locked_until = Column(DateTime(timezone=True), nullable=True, comment="账户锁定到期时间")
-    last_failed_login = Column(DateTime(timezone=True), nullable=True, comment="最后一次登录失败时间")
+    last_failed_login = Column(
+        DateTime(timezone=True), nullable=True, comment="最后一次登录失败时间"
+    )
 
     created_at = Column(DateTime(timezone=True), server_default=func.now(), comment="创建时间")
     updated_at = Column(DateTime(timezone=True), onupdate=func.now(), comment="更新时间")
@@ -34,7 +54,7 @@ class User(Base):
 
     # 添加复合索引：加速审批管理查询
     __table_args__ = (
-        Index('ix_user_role_approved', 'role', 'is_approved'),  # 管理员查询待审批用户
+        Index("ix_user_role_approved", "role", "is_approved"),  # 管理员查询待审批用户
     )
 
     def __repr__(self):