coord-send.sh ran coord-done under `>/dev/null 2>&1` and then printed the
handled claim unconditionally. Measured with a stub coord-done exiting 1:
the original stayed in the inbox, no archive/ was created, and coord-send
still exited 0 saying "marked handled" - a false success in the message
transport itself, which is why every reply had to be verified by hand.
The predicate is deliberately wider than the exit code: coord-done exits 0
when it archives nothing (an unknown name is idempotently fine by its own
contract), so an exit-code-only fix still certifies a message that never
moved. The check is exit 0 AND the original no longer being at
$COORD/$FROM/inbox/$REPLYTO - recomputed rather than reusing $REPLY_ORIG,
which resolves to the inbox OR the archive, so replying to an already
archived original moves nothing and must not warn.
Failure is exit 1, a new status: the reply WAS delivered and re-sending it
would duplicate it, so 2 stays the nothing-was-written status.
Selftest section 34 (14 checks, red first) pins all four cases: coord-done
fails outright, coord-done exits 0 without moving, the real happy path, and
an archive-path reply. coord-selftest 206 -> 220.
Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01Ett8uHMDLir6trFaMzrYRu
Kjell Tore Guttormsen
21e2873e21