Back in August, I started trying to learn Mac programming with the Xcode 12 from the App Store as Xcode 13 was still in beta. Apparently, once 13 was out of beta, Apple automatically upgraded me. It really throws a curve in your learning process when the tools change out from under you, but I have survived.
Xcode 12 had a feature where an image popped up to indicate success or failure of the build. See above.
I can't reproduce this in Xcode 13. I can set up a system notification, but that's not the same.