The background daemon thread that pushes chat turns to Graphiti was using
default-buffered print(), so the success/failure lines never reached the
systemd journal — buffer never flushed because the thread keeps the
interpreter alive. The push itself worked (verified by Episodic nodes
appearing in the graph), just the log was silent.
Surgical fix: pass flush=True on the four print() calls inside _push_chat_turn_
to_graphiti's background worker. Now every push result lands in the journal
as it happens, giving real-time visibility into whether pushes are
succeeding, failing on non-200, hitting a network error, or raising
unexpectedly.
If we add more background-thread logging later, PYTHONUNBUFFERED=1 in the
service environment would solve it globally — but that's overkill for this
one site.
aaron
9d09d3fa14