When I started trying to write a Mac app for the first time, I started out knowing what I wanted to achieve but not knowing how to go about it. I spent a lot of time googling for Mac development help and found very little of it. What i did find was mostly related to Objective-C and not Swift/SwiftUI.
So, I spent a lot of time going round in circles, extracting the bits that I thought relevant and heading down a lot of blind alleys.
This project is part of a series of development notes I want to write to document some of the stuff I learnt along the way. The article that goes with it can be found on my web site.