Delete Harbor Saved Query

Archives one Harbor saved query and removes it from active reads. Archiving removes the saved query and any draft from active reads while retaining its immutable revisions for provenance. The operation does not run the saved SQL or modify the Harbor backing Connection. Archiving does not cancel in-flight execution requests or queued executions. This REST operation archives the saved query; it does not merely unpublish it. Unpublish is available only through the GraphQL `unpublishHarborSavedQuery` mutation. There is no REST unpublish endpoint.