Universal aren't included in Additional agents

Problem

At stage "Which agents do you want to install to?" universal harnesses are not shown under "Additional agents".

It would seem preferable to keep both lists searchable, as it seemed to be a regression as previously supported.

Also, the universal list states "…and 8 more" which I can't access, so I don't know which harnesses aren't shown.

Reproduce

npx skills@1.7.1 add mattpocock/skills

npx skills@1.7.0 or earlier supported searching all harnesses.

If this is intended, how would I view the full list of supported agent harnesses?

See below: