skills(objectstack-upgrade, catalog READMEs): the upgrade preflight re-installs the catalog from @objectstack/skills on a 17.x to 18 move; both READMEs give the scaffolder's pinned --copy sync

skills(objectstack-upgrade, catalog READMEs): the upgrade preflight re-installs the catalog from @objectstack/skills on a 17.x to 18 move; both READMEs give the scaffolder's pinned --copy sync #14430