OP here.

I don't expect the model to be trained on the latest features of the harness, but I think the harness should ship with its own docs so that the model can quickly search local docs rather than search online page by page for docs that don't necessarily match the local harness.

I think definitionally the model can't know about the harness, since the model is at least a few months out of date. So every model must be behind it's harness or something really weird is going on.

Makes me wonder about doing some archaeology and trying out really old harnesses on modern models...

So include the docs like what Pi already has been doing since the beginning.