casacade delete tasks

src/models/tasks.py

@@ -16,7 +16,7 @@ priority_enum = Enum("low", "medium", "high", "critical", name="priority_enum")
 class TasksORM(Base):
     __tablename__ = "tasks"
     id: Mapped[int] = mapped_column(primary_key=True, autoincrement=True)
-    user_id: Mapped[int] = mapped_column(ForeignKey("users.id"))
+    user_id: Mapped[int] = mapped_column(ForeignKey("users.id", ondelete="CASCADE"))
     title: Mapped[str] = mapped_column(String(100))
     description: Mapped[Optional[str]] = mapped_column(Text, nullable=True)
     due_date: Mapped[Optional[date]] = mapped_column(Date, nullable=True)