stampedLogArtifactLines

The stamped NDJSON lines for stamped: each element is one StampedLogRecord — the log record plus its ordering stamp (producer us.tractat.kuilt.crdt.ReplicaId and cross-device total-order key) — serialized to a single line of JSON, in order.

This is the merge-oriented artifact form. Where logArtifactLines writes the plain, OTLP-shaped record for a single device, this variant additionally carries the StampedLogRecord.rgaId each line needs to be interleaved with lines from other devices into one timeline. A collector concatenates every device's stamped artifact and sorts the union on StampedLogRecord.rgaId. No trailing newline is added.