Kernel state at capture time.
OptionalparentRun-id the snapshot was captured from, when available. Threaded
into RunArtifact.metadata.forkedFrom.parentRunId on the child
run so fork chains reconstruct from stored artifacts.
Format discriminator; bumped when the shape changes.
Serializable bundle that captures everything needed to reconstruct an equivalent WorldModel at a specific turn. Round-trips through
JSON.stringify+JSON.parsewithout data loss.Produced by WorldModel.snapshot (live run) or implicitly via WorldModel.forkFromArtifact (disk-persisted run that was created with
captureSnapshots: true).