"The ubuntu-latest label will migrate to Ubuntu 26 beginning October 19, 2026. For more information, see https://github.com/actions/runner-images/issues/14748"

"The ubuntu-latest label will migrate to Ubuntu 26 beginning October 19, 2026. For more information, see https://github.com/actions/runner-images/issues/14748"

ADR-0087 exemption (no-migration-prescription): No metadata moves: no spec key, authorable spelling, object definition or stored shape is added, removed, renamed or re-shaped, and no exported declaration is added, removed or narrowed, so there is nothing for `objectstack migrate meta` to rewrite. What narrows is the accept set of the metadata save door for one shape: an `object` save naming a package other than the one whose runtime-authored row already owns the object is now refused where it was written and then discarded by the registry. The remedy is in the request a caller sends (bind it to the owner's package, or name no package), never a rewrite of a package source or a stored row; a row of that shape stored before this change is not rewritten (the registry never held it) and leaves by an ordinary delete naming its package. The other categories are closed on facts: the package publishes (not unpublished); no ADR-0087 id is named or touched (not registered or already-registered); and nothing exported is removed or narrowed (not runtime-interface-only, type-surface-only or runtime-export-retired).