Rebuilds fail for anyone with discourse-narrative-bot in app.yml

Aha! When I checked /admin/upgrade today and saw that the latest change in the bot plugin was that it has been deleted and moved to core I did not dare to upgrade. Looks like my fears were not totally unwarranted. (Though I’m not sure what you mean by

Can you install a plugin non-deliberately?)

Could someone explain what people who have the bot installed need to watch out for? More precisely: in what order to I do things when removing the bot from app.yml? Or do I just remove it and that’s it?