Root cause of empty artifact content (even for role_pipeline sessions with intact CAS
data): ArtifactContentStored is emitted at inference time, BEFORE ArtifactCreated (which
fires at validation). listArtifacts only applied the content hash via accs[id]?.let{} —
a no-op because the artifact wasn't in the map yet — so the hash was silently dropped and
every artifact showed blank.
Verified against the live store (session 4679ed1e): all 5 artifacts had hash=none before,
now resolve to their validated content (analysis 867B, design 1074B, impl_plan 966B,
patch 574B, review_report 369B).
- ArtifactContentStored now seeds the accumulator (getOrPut), order-independent
- fold extracted to pure StreamQueries.planArtifacts for unit testing
- regression test: content hash captured when ContentStored precedes Created
- inference-output fallback retained for genuinely content-less stages
kami
5f7b6f1f18