A human message in a channel woke agents only through @mentions, DM
counterparts, or prior thread participants - and the flat composer
always sends threadId=null, so typing in #general summoned nobody and
the room stayed silent.
- Track which agents each wake path summoned in one woken set (also
prevents latent double-wakes between the paths)
- When a non-slash human message in a channel wakes nobody, wake the
channel's most senior active agent member with an enabled provider
(c_suite > director > lead > staff, then hire date); they can pull
teammates in with @mentions
- Log when a channel has no runnable agent so silence is diagnosable
- Integration test: plain #general message wakes the CEO who replies;
an explicit mention still wakes exactly one agent
ZacharyZhang-NYandClaude Opus 5.5