How is the Junk Yard different from Tuhi?
Short answer: Tuhi is Storage Studio's on-device storage assistant you ask questions; the Junk Yard is a board for your copies and quick notes. Both keep their smart features on your Mac.
Tuhi is Storage Studio's on-device assistant: you ask it questions about your Mac's storage and it answers or takes you to the right place. The Junk Yard is a board for the things you copy and the quick notes you jot.
They share a design principle — the clever parts run on your Mac — and on Macs with Apple Intelligence, the Junk Yard's Smart find uses it to search by meaning. See the Tuhi questions.