Asking to be notified about your own session now returns a clear error instead of quietly doing nothing.
What's wrong with this entry?
notify_when_idle no longer accepts the current session as a target. It returns an error naming the session you passed and explaining that nothing was subscribed.
- The session identifier is interpolated into the message.
- This replaced a message that previously advertised ultraplan progress monitoring on the same path.
- Unconditional; there is no flag or setting involved.
nothing was subscribed; you already know when your own turn ends.
Strings lifted out of the shipped bundle, so the claim above can be checked against them.