Should have programmed it in .NET
Core - then it would have run on all platforms.

.NET Core is a scam. .NET Cash is the real .NET

If it's built on Electron it should work cross-platform. Windows version just probably hasn't been finely tested/actually built yet.
Looks awesome, although, I do have to admit, I did expect a bit more orange
(I'm just kidding the design looks great)That's exactly right. Making the Windows and Linux versions available is only a matter of figuring out the CI/CD and setting up the virtual machines on my Mac to test them.
Thanks for complimenting the design. I spent a lot of time on it because I'm not a designer or a user experience expert. Hopefully I'll find an open-source volunteer to help in that area in the future.