Muse Spark 1.3 is available in Cursor! You could try it there.

(Disclaimer: I work at Cursor/SpaceX)

As an aside: I tested out the $20 Cursor CLI subscription, and it created an excellent little graphical app for my kids to play with. The design it came up with was excellent (compared to the crap I got out of Codex for a parallel implementation). I'm going to try to figure out how to get Cursor into my work rotation, at least around design-related artifacts.