Optional ReadonlybuildOptional ReadonlycapabilitiesExplainability-only labels; must not become semantic switches.
ReadonlykernelRequested kernel family id (not a version number). Actual activation / fallback must be interpreted via RuntimeServicesEvidence.
ReadonlypackageThe npm package that provides the kernel implementation.
Optional ReadonlypackageOptional semver for explainability (not used as a semantic anchor).
Optional build hash/id for evidence diff explainability.