The origin_file disambiguation field (#1462) is internal — it's consumed by the
colliding-id pass and must not be persisted. In 0.9.0 it shipped into graph.json
as an absolute, machine-specific path (the same portability bug class as #555,
#932), breaking on clone/move. It's now popped at the single extract() output
chokepoint, AFTER _disambiguate_colliding_node_ids has consumed it, so all persist
paths (clustered, --no-cluster, cluster-only) emit clean output. _origin is kept
(the incremental watcher relies on it, #1116).
Ported from PR #1516 by @TPAteeq. Verified: fresh extract (clustered and
--no-cluster) produces graph.json with zero origin_file fields; the #1462 same-
label disambiguation still works (it runs before the strip).
Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
