So, I was planning to focus on packaging, documentation, and getting this thing published this weekend, but, I think I'm actually going to use the time to rebuild the UI in something else. Slint has a kinda cranky license, but seems to have a tiny runtime and looks great. Dear Imgui is not really accessible (not super relevant for a drawing program maybe, but if I'm learning a new thing, I want to be able to make accessible software with it, it's the minimal bar for a GUI toolkit, IMHO).