class CursorRegisterException(Exception):
    """基础异常类"""
    pass


class TokenGenerationError(CursorRegisterException):
    """Token生成失败"""
    pass


class ProxyFetchError(CursorRegisterException):
    """代理获取失败"""
    pass


class RegisterError(CursorRegisterException):
    """注册失败"""
    pass


class EmailError(CursorRegisterException):
    """邮件处理错误"""
    pass