ADR-0087 exemption (no-migration-prescription): No metadata moves: no spec key, authorable spelling, export or stored shape is removed, renamed or re-shaped, so there is nothing for `objectstack migrate meta` to rewrite. What narrows is a runtime read door — the generic data door stops EVALUATING a field whose existing `internal: true` declaration already withholds it from every row, and the remedy is the declaration the author already wrote, never a rewrite of anyone's code or metadata. No exported declaration is removed or narrowed (not runtime-interface-only or type-surface-only); both packages publish (not unpublished); no ADR-0087 id is named or touched (not registered or already-registered).