ADR-0087 exemption (no-migration-prescription): No metadata moves: no spec key, authorable spelling, exported declaration or stored shape is removed, renamed or re-shaped, so there is nothing for `objectstack migrate meta` to rewrite. What changes is the runtime answer of one field map, `buildFieldMetaMap`, for a `user` field written without `reference`: the import resolves its cell against `sys_user`, which refuses the id of a user the caller cannot see, and the export expands its column into the user's name. Both answers are the ones a `Field.user` field already gets; the author's metadata stays as written. The other categories are closed on facts: the package publishes (not unpublished); no ADR-0087 id is named or touched (not registered or already-registered); no exported declaration is removed or narrowed, `ExportFieldMeta` and `buildFieldMetaMap` keep their signatures (not runtime-interface-only or type-surface-only).