Two issues causing "no transition condition matched":
1. emitToolArtifacts only emitted ArtifactCreatedEvent; the artifact_validated
transition condition requires VALIDATED phase, which needs the full lifecycle
(Created → Validating → Validated). Tool success is sufficient grounds for
auto-validation, so emit all three events.
2. DefaultSessionOrchestrator was building stageArtifacts from LiveArtifactRepository
which uses a hot async subscription — cache was always empty at lookup time.
Now reads ArtifactValidatedEvents directly from the synchronous EventStore.read().
kami
bc755572bd