feat: 为多个模型的外键字段添加级联删除和其他约束

models/storage_pack.py

@@ -20,7 +20,12 @@ class StoragePack(SQLModelBase, TableBaseMixin):
     size: int = Field(description="容量包大小（字节）")
     
     # 外键
-    user_id: UUID = Field(foreign_key="user.id", index=True, description="所属用户UUID")
+    user_id: UUID = Field(
+        foreign_key="user.id",
+        index=True,
+        ondelete="CASCADE"
+    )
+    """所属用户UUID"""
     
     # 关系
     user: "User" = Relationship(back_populates="storage_packs")