修复cookie失效后的一些问题

backend/shared/models/account.py

@@ -24,7 +24,7 @@ class Account(Base):
 
     user = relationship("User", back_populates="accounts")
     tasks = relationship("Task", back_populates="account", cascade="all, delete-orphan")
-    signin_logs = relationship("SigninLog", back_populates="account")
+    signin_logs = relationship("SigninLog", back_populates="account", cascade="all, delete-orphan", passive_deletes=True)
 
     def __repr__(self):
         return f"<Account(id={self.id}, weibo_user_id='{self.weibo_user_id}')>"

backend/shared/models/signin_log.py

@@ -10,7 +10,7 @@ from .base import Base
 class SigninLog(Base):
     __tablename__ = "signin_logs"
     id = Column(Integer, primary_key=True, autoincrement=True)
-    account_id = Column(String(36), ForeignKey("accounts.id"), nullable=False)
+    account_id = Column(String(36), ForeignKey("accounts.id", ondelete="CASCADE"), nullable=False)
     topic_title = Column(String(100))
     status = Column(String(50), nullable=False)
     reward_info = Column(JSON, nullable=True)