Great to hear others are thinking along similar lines!

Context pollution is a serious problem - I love that you use that term as well.

Have you had good feedback for your fork-off implementation?

Feel to "borrow" the term "context pollution" :)

Yes it has proven quite a useful feature. Primarily for the reason stated above, allowing users to get a full log of what's going on in the same session that the core task is taking place.

We also use it extensively to facilitate back-and-forth conversation with the agents, for instance a lot of our human-in-loop capabilities rely on the forking functionality...the scope of its utility has been frankly surprising :)