"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, stored shape or exported declaration is added, removed, renamed or narrowed, and no stored row is read, rewritten or converted, so there is nothing for `objectstack migrate meta` to rewrite. What changes is the answer the engine gives an in-process caller that opts into `strictReadonlyWrites` and sends a value a stored expression then replaces: that write is refused where it completed and was reported. The remedy is the caller's own payload (leave the field out, or send the computed value), which no ledger entry can derive. The other categories are closed on facts: the package publishes (not unpublished); no ADR-0087 id is named or touched (not registered or already-registered); and nothing exported is removed or narrowed (not runtime-interface-only,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).