This is not for code bases, that’s pointless. This is for durable facts like “this is the prod server” or “this is the skill for managing GitHub Actions cleanup policies”.

In short, this is for my agents to have a shared skill library, a shared fact library and durable information such as which projects run where.

The rest should be in your repo.

Well, do you see the value of writing notes for yourself occasionally, even though they might soon become stale in your constantly changing environment? Yes, right?

Same principle. It's a good idea to have a schedule to clean them up periodically - an idea you can also put into a note.