All, As it is, I've added interactive mode psql_error notifications about the resulting branching state of any branching commands, and any attempt to send non-branching commands or queries while in an inactive branch will generate a psql_error saying that the command was ignored. Waiting til I get what should or shouldn't be done about prompts before issuing the next patch revision.
So far, interactive branching information will look like this (it prints on every branching command and on every ignored command):