It looks impressive but it duplicates a tonne of existing functionality from TWIN, which has been around for about 25 years or more.
https://github.com/cosmos72/twin
https://en.wikipedia.org/wiki/Twin_(windowing_system)
And both of them seem to re-implement their own, inferior, versions of the TurboVision text-mode "widget toolkit":
https://tvision.sourceforge.net/
https://github.com/magiblot/tvision
A merger could result in something greater than the sum of its parts.