Function forged_ending 

fn forged_ending(ending: &TaskEnding) -> Message

The notice as a frame of its own, for the turn that holds the call it ends.

Forged rather than read off the wire, like the turn a delivery draws as: the CLI wrote this ending into a row of its own, and this is that ending delivered where a per-turn fold can see it. It carries no uuid, because the CLI mints the transcript’s id for its own row and nothing here may invent one that disagrees with it.