"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 key is added, removed or renamed, and no value a legitimate producer writes is refused: the registration is the only writer of `_packageId` (`os build` writes none, the package export strips every underscore key, the artifact loader stamps with the very id the registration keys on), so a foreign stamp on an object or app exists only in a body somebody wrote by hand to claim another owner. A D2 conversion could not tell such a stamp from an agreeing one without the registration that judges it, and the refusal names the item, both ids and the remedy.