registry__get_related_artifacts when you already know
an artifact handle and need to see what it depends on, what follows it, its
alternatives, and the artifacts that point back to it.
- Inputs: required
artifact_id; optionalsession_id; plusrationalewhen Gateway enables it. - Handle format:
<kind>_<identifier>, such asskill_.... - Returns: the artifact’s visible typed relationships in both directions.
- Effect: read only.
registry__search_artifacts first when you need to find the artifact.