StaticExportOptionalprovider: IMetadataProviderStaticImportImports a SKILL.md document, resolving Action/sub-agent names against the current instance's catalog (unresolvable names are dropped and reported as warnings, not fatal errors — a skill authored against a different MJ instance may reference actions that don't exist here yet).
Optionaloptions: ImportSkillOptionsOptionalprovider: IMetadataProvider
Exports a skill to a portable SKILL.md string: Action/sub-agent IDs are resolved to their current Names (not IDs, for cross-instance portability) via the AI/Action engine caches.