Some suggestions

[yangrq1018]

• Can we make BaseBotException inherited from Exception? With BaseException, nonebot won't catch and display exceptions like raise ThesaurusError(f"添加词库(tal)数据失败 目标词id: {_id}"). They simply swallow it, that's quite confusing.
• Can we move database startup to plugins/__init__.py. Sometimes I just load one plugin to test it, if it needs database access, it fails because plugins/essential.py is not imported
• I took care of plain-text message recall (will send it to superadmin), if this is the intended behavior?

[Kyomotoi]

感谢建议&修改. 烦请下次pr时, 对于文件内 import 包顺序，请保持同项目风格一致.