"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 validity narrowing over two existing keys: `options` and `picklist` are not removed, renamed or re-shaped, so there is no tombstone and nothing mechanical for `objectstack migrate meta` to rewrite. Which choices a `select` / `radio` with no option source was meant to offer is authoring intent that no conversion entry can invent. Stored rows follow the ruling's arm for rows that exist (production `sys_metadata` is not measurable from this repository, so the disposition assumes some do): new writes are refused at the parse site with the remedy, and a stored row keeps its bytes, is still served with `_diagnostics.valid: false`, is listed by `/meta/diagnostics`, and is counted invalid and named by the `field/choice-without-options` boot line until an option or a picklist is added (pinned in `@objectstack/metadata-protocol`). The in-tree authored population is zero (examples and platform objects); the fixture census is on the PR. The other categories are closed on facts: the package publishes (not unpublished); no ADR-0087 id covers the choice-source rule and this diff adds none (not registered / already-registered); and the change narrows a metadata schema's accept set, not a runtime interface or a type surface alone (not runtime-interface-only / type-surface-only).