Frames the root cause of the live-Coldeve 4/6-missing-hotbar-icons (acdream's
enrich-existing-only item model drops CreateObjects without a pre-seeded stub) and
the retail ClientObjMaintSystem model to port. CRUX to settle first: unify the
WorldEntity + ItemRepository tracks, or keep separate with shared ingestion.
Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
