ManifestQuery.Core → consumer application
0.3.0: find_by_status(status)
0.4.0: add find_by_lifecycle(state); deprecate old entry point
0.4.x: consumers migrate; old API remains
1.0.0: remove find_by_status; record migration

Interface note: public surface, stability, version policy, extension contracts, known consumers.
Consumer validation: required before real removal.