"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, no stored row is rewritten, converted or deleted by this change, 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 object save door for one shape: a draft save naming no package of an object whose registry owner is its package-less definition (the `sys_metadata` sentinel), when the draft address that save writes is a package's draft, is refused, where it wrote a draft no publish could serve. The remedy is in the requests a caller sends (a delete and draft discards through the same door, then the same save), never a rewrite of a package source or a stored row. The other categories are closed on facts: the package publishes (not unpublished); no ADR-0087 id is named or touched (not registered or already-registered); and nothing exported is removed or narrowed (not runtime-interface-only,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).