Load the artifact, failing HARD on anything: an absent/incompatible build throws from the import, a stale one throws by name from the staleness check.
For callers with no fallback path, where a silent skip would report success having measured or compared nothing.
Load the artifact, failing HARD on anything: an absent/incompatible build throws from the import, a stale one throws by name from the staleness check.
For callers with no fallback path, where a silent skip would report success having measured or compared nothing.