"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): Nothing authored moves: `packages/spec` is untouched and no metadata key is added, removed or reshaped, so `objectstack migrate meta` has nothing to rewrite and the ledger has no row to gain. What narrows is the set of caller-written string VALUES a number-typed field accepts at the write door, judged by the spec's existing numeric grammar; stored rows are never re-read, and a caller that sends a number, a blank or a grammar-admitted string is unaffected. The other categories are closed on facts: the package publishes (not `unpublished`); no ADR-0087 id covers a write-door value check (not `registered` / `already-registered`); and the change is runtime behaviour, not a TypeScript declaration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`).