Skillhound: A live index of every SKILL.md

Built this internally for our coding agents but have been loving it so much that we decided to make it public.

The web UI is free to use and does not require sign up, and has every public SKILL.md on GitHub indexed, with the index refreshing every 48 hours.

Programmatic use is $20 a month for unlimited searches, and I can vouch for the fact that it's made my agents feel so much smarter and more knowledgeable. Only issue is right now you have to nudge it to use skillhound ("use skillhound first") otherwise it tends to try to figure out best practices on its own.

Hope it can be as useful to the community as it is to us, and would appreciate any feedback you have.