Each change of an artifact's series the checked head makes is {module, artifact, from, to} under series; the
fixture carries one and the regenerated round trip reads it back (seatgen -check clean).
Claude-Session: https://claude.ai/code/session_01JG73KJNrH5EgFXMKKYSrig
One @novox/mesh-contracts would rebuild every TypeScript user at any seat's change, since the indexer
counts the npm package a lock resolves. Generated by seatgen c1fdd7c; ts/ keeps the seat list alone.
Claude-Session: https://claude.ai/code/session_01JG73KJNrH5EgFXMKKYSrig