This PR adds no changeset. If it releases nothing, apply the 'skip-changeset' label (preferred); otherwise run 'pnpm changeset' and name the packages. An empty-frontmatter changeset also passes this gate, but it is NOT equivalent to the label -- it is a real input to changesets/action, and an all-empty set stalls the release silently and greenly (#4898). Full comparison in this step's log.