`4` promises a caller that the node answered and a retry is worth
trying. An unknown admin node, an unknown courier contact and an `--at`
that is not a clock time are all decided before a word goes over the
air, so a caller retrying on `4` would retransmit nothing, forever.
`tx-optimize` had already answered the identical question the identical
way for a missing password; these had not caught up.
A refused admin login stays `4`. The node was reached and answered no,
the password may simply have changed, and that is exactly the case a
retry exists for — the line is whether anything was transmitted, not
whether the command worked.
The manual documented the old behaviour and called the inconsistency
out; it now documents the rule instead.
Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
Jean-Pierre MartineauandClaude Opus 5
b76a93808f