The previous fix routed (MSG,HOOK:...) lines through state.messages
and then immediately ack'd them to suppress the user-visible popup.
But state changes are debounced 0.25s before listeners fire, so the
HOOK message was already ack'd (removed from the list) by the time
Hooks._on_state_change saw the update - and the hook never ran.
Add Hooks.dispatch_hook_message() as a direct entry point and call
it from Planner._add_message. HOOK lines are dispatched synchronously
from the planner thread; the user message list is left untouched, so
no popup leaks and no debounce race.
Henrik Muehe
1a6f926181