I think it would be a good idea to update the "Comment" field in the desktop file here since it's identical to the one in WSJT-X:

https://github.com/JS8Call-improved/JS8Call-improved/blob/master/.github/workflows/misc/JS8Call.desktop

Do we have a good tagline to put there? The original JS8Call page says "Weak signal keyboard-to-keyboard messaging for ham radio" which sounds pretty good.