- locale-install.test.js: verify locale:uk-ua resolves to docs-uk-ua,
the uk alias dry-run resolves the same plan, and a real (non-dry-run)
--locale uk-UA install lands files under docs/uk-UA
- install-manifests.test.js: assert every SUPPORTED_LOCALES alias
resolves to a real component whose modules exist on disk, guarding
against orphaned locale:<id> entries like the one this PR fixes