Try and have a look at the readme, this adds a bit more functionality. Maybe some if it you'll find useful :)
Started with the same, but found my self wanting a bit more, so just built it
Can it do things that existing tools build into my distro cannot?
It looks to me like a convenience tool. Which is fine, but i see no need for it myself
Probably not, that's what makes it so lean (it doesn't really pull in anything).
Although i have a feature branch with a tray app (for macos) that let's you monitor and track any process (will send notifications when one goes up or down). But it's just gimmicks i felt i needed to make life a bit easier when working with compose and across worktrees
That monitor sounds interesting; I manually set something up in Keyboard Maestro to notify me that something quit and potentially re-launch it.
Have a look at this issue, and the picture i posted. Their is an explanation on how to test it out locally if you wish too