Entities rewritten since the sweep last examined them.
When backlog was sampled (epoch millis) — the start or end of a sweep.
OptionalduplicateEntities sharing another entity's significant-name-token signature; absent until a sweep sampled it.
OptionalduplicateWhen duplicateNames was sampled (epoch millis).
OptionallastThe most recent sweep: the bounds it ran under and what it got through; absent until one has run.
Readings the incremental entity-resolution sweep persists on a knowledge base: the dirty backlog it drains across sweeps and the duplicate-name fragmentation it exists to merge.