"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): A validity narrowing at one runtime write door over existing keys, the consequence of where the read doors now place a stored copy's views: no key of `ViewSchema` or of any other metadata schema is removed, renamed or re-shaped, so there is no tombstone and nothing mechanical for `objectstack migrate meta` to rewrite. Whether a refused copy meant its added member as a view of its own, as an override of the other package's view, or under a key of its own is authoring intent no conversion entry can decide. New saves are refused with the remedy; a row stored before this change keeps its bytes, and no stored row is re-saved. No census of the writers that save such copies (a package's stored copy of a container it ships on another package's object) was taken: Studio, package duplication, `migrate meta --stored`, the example apps, hosted tenants and the cloud AI author were not measured. The other categories are closed on facts: the package publishes (not unpublished); no ADR-0087 id covers this rule and this diff adds none (not registered / already-registered); and the change narrows what a runtime write door accepts, not a runtime interface or a type surface alone (not runtime-interface-only / type-surface-only).