"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 non-Ed25519 signing and verifying keys by the plugin artifact signature functions in @objectstack/core. No authorable key, spelling, export or stored metadata shape moves: the change is which cryptographic keys signPayload and verifyPayload accept, and a key is an operational secret that no ledger entry or os migrate meta run can rewrite. The other categories are closed on facts: the package publishes (not unpublished); no ADR-0087 id covers the signature contract (not already-registered); and the changed exports are functions whose behaviour narrows, not an interface or type declaration (not runtime-interface-only or type-surface-only).