个人自用的定时报告邮件工具，用于给自己的邮箱发送日报并读取特定回复。
A personal, self-hosted scheduled report mailer. It sends daily reports to the owner's own mailbox and reads specific replies.
本工具仅由所有者本人使用，不对外提供注册或服务。它通过 Google OAuth 获得授权后，按计划发送报告邮件，并仅读取来自指定发件人、指定主题的回复。
This tool is used only by its owner; there is no public sign-up or service. After authorization via Google OAuth, it sends scheduled report emails and reads only replies from a designated sender with a designated subject.