"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 runtime narrowing on the inbox mark-read path, not a metadata change: no spec key, export, option, response field or stored shape is removed, renamed or re-shaped, so there is no tombstone and nothing for `objectstack migrate meta` to rewrite. What narrows is which ids produce a receipt row: an id never delivered to the caller now writes none and is not counted, while every delivered id behaves as before. The other categories are closed on facts: the package publishes (not unpublished); no ADR-0087 id covers this path and this diff adds none (not registered / already-registered); and no published interface or type changes (not runtime-interface-only).