The published spec says the Android client *"cannot yet apply one, because
its transcript does not record a `mid` for each line"*, and that the same
gap blocks replies and reactions.
The transcript DOES record a mid, and `MessageReactionTest` already folds
a reaction onto a message by id — so the stated reason is false and the
consequence for §6.9 is false with it.
⚠️ But relay#46's rule is the point of this commit: **do not flip a claim
because the code looks present; flip it because a run proved it, and say
which run.** `applyEdit` was implemented and wired with nothing exercising
it — `InboundControlTest` covers the codec and says in its own header that
the app-side application needs a Vault and is out of scope there. This is
that run, written so the correction has something behind it.
Five tests, and the two that matter most are refusals: an edit from
somebody who did not write the message, and an edit of our own message
claiming another author. Without the author check a contact could rewrite
another person's words in a transcript, which reads to the reader as the
sender having said something they never said. Both proved by removing that
check and watching exactly those two go red.
Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
