"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 refusal of a written VALUE at the record validator's date / datetime arm: no authorable key, spelling or stored shape of metadata moves, `packages/spec` is untouched, and a stored row keeps whatever it holds. What is refused is a temporal string naming a day that does not exist, or a datetime string outside the ISO spellings, and which instant such a string meant (a host zone, a locale's day order) is not something a ledger entry can decide. The other categories are closed on facts: the package publishes (not `unpublished`); no ADR-0087 id covers a write-door value check (not `registered` / `already-registered`); and the change is runtime behaviour, not a TypeScript declaration (not `runtime-interface-only` / `type-surface-only`).