"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 row or stored shape is added, removed, renamed or re-shaped, so there is nothing for `objectstack migrate meta` to rewrite. What narrows is `validateTree`, a function of this library, for a manifest that carries the new `slots` key: nodes held in those positions are now judged. No manifest the save gate reads carries that key (the tracked `sdui.manifest.json`: 0 of 106 entries), so no stored or authored page changes verdict there. A caller who builds a slotted manifest gets diagnostics on slot-held nodes, and the repair is the page author's per diagnostic, 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 The other categories are closed on facts: the package publishes (not unpublished); no ADR-0087 id is named or touched (not registered or already-registered); and nothing exported is removed or narrowed, since the two renamed types stay exported as deprecated aliases (not runtime-interface-only, type-surface-only or runtime-export-retired).