Here’s one discussion here: Calling branches "branches" is misleading
And on Zulip:
pijul channels vs. git branches
Getting all the changes in a channel?
branching
branches and channels and unrecord
Your draft is okay for the manual, but it’s the help text that I think is more important. Of course, Git and Bazaar both have extensive help text, so Pijul could also. No need for a manual then.