A sub-agent's reply to send_message lands in the caller's own pane
tagged [sub-agent:<name>], not in the sub-agent's output. The
descriptions for wait_for_pattern, send_message, both
timer_fire_when_idle_*, and the server-instructions preamble now
spell this out, along with the canonical send_message →
timer_fire_when_idle_any → read-own-pane pattern. help('readiness')
and help('coordination') updated to match. Previously agents reached
for wait_for_pattern on the sub-agent and deadlocked until timeout
because the reply had already been delivered to their own pane.
Harry Bayliss
0c960fa859