Having gotten that frankly embarrassing belly-aching out of the way....
My head's trying very hard to turn on itself in a number of ways. Talking out my frustrations was supposed to help with this, but now I just feel like some kind of spoiled brat who shouldn't be trusted to work any form of computing more modern than a pocket calculator.
I think it's time for a break from the keyboard and a mental reset, so maybe I can do the design work I actually wanted to do today.