1.9+

backend/app/services/user_service.py

@@ -61,6 +61,16 @@ class UserService:
         user.password_hash = hash_password(new_password)
         user.updated_at = datetime.utcnow()
 
+    async def delete_account(self, user_id: str, password: str):
+        """注销账号：验证密码后删除用户（FK CASCADE 级联清理相关数据）"""
+        from sqlalchemy import delete
+        user = await self.get_by_id(user_id)
+        if not user:
+            raise ValueError("用户不存在")
+        if not verify_password(password, user.password_hash):
+            raise ValueError("密码错误，无法注销")
+        await self.db.execute(delete(User).where(User.id == user_id))
+
     async def change_email(self, user_id: str, new_email: str, password: str):
         """更换绑定邮箱"""
         user = await self.get_by_id(user_id)