"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 authorable key, spelling, export, config field or stored shape is removed or renamed, and no stored row is read or rewritten: the change narrows which physical columns the engine's read verbs return, to the field map the metadata already declares. A retired column's values stay in the table; what an app does with them is an operator action stated above (convert before upgrading, or the operator-only os migrate read), not a FROM to TO mapping that objectstack migrate meta could apply. The other categories are closed on facts: the package publishes (not unpublished); no ADR-0087 id covers a read projection (not registered / already-registered); and the change is runtime behaviour, not a declaration (not runtime-interface-only / type-surface-only).