Oh you're right. I was thinking Tauri was a cross-platform native UI kit. Imgui seems interesting but given it requires C++ knowledge that introduces all sorts of lifecycle issues regarding memory safety, etc, which makes it even more intimidating to newer SWEs.
ImGui does have a bunch of wrappers in different languages. [1]
That said, native-ish interface would feel better IMO. I always appreciate applications that “feel native”. Qt and Python's Toga [2] are a couple libraries that pop up in my mind.