Background review notifications ("💾 Skill created", "💾 Memory updated")
could race ahead of the main assistant reply in chat, making it look like
the agent stopped after creating a skill.
Gate bg-review notifications behind a threading.Event + pending queue.
Register a release callback on the adapter's _post_delivery_callbacks dict
so base.py's finally block fires it after the main response is delivered.
The queued-message path in _run_agent pops and calls the callback directly
to prevent double-fire.
Co-authored-by: Hermes Agent <hermes@nousresearch.com>
Closes#10541
33ff29dfae