ADR-0087 exemption (no-migration-prescription): No metadata moves: no spec key, authorable spelling or stored shape is added, removed, renamed or re-shaped, and no exported declaration is removed or narrowed. `@objectstack/rest` gains two exports (`metaItemQueryRefusal`, `metaMemberSelector`), and the module constants that moved beside them are still exported, unchanged, from `rest-server.ts`. No stored row or package source changes, so there is nothing for `objectstack migrate meta` to rewrite. What narrows is four runtime doors' query accept sets on the runtime dispatcher (`GET` and `PUT /meta/:type/:name`, `/layers`, `/published`): a query parameter those doors dropped now answers a located `400 VALIDATION_ERROR`, and the remedy is in the request a caller sends to that door, never a rewrite of a package source or a stored row. The other categories are closed on facts: both packages publish (not unpublished); no ADR-0087 id is named or touched (not registered or already-registered); and nothing exported is removed or narrowed (not runtime-interface-only, type-surface-only or runtime-export-retired).