Every now and then, there will be the type of problem to solve where I know it will require an extra cup of coffee, a long block of dedicated time, and a lot of careful reading, debugging, note taking, and going for walks to think. This is often “subtle bugs that are hard to repro but we need to fix” territory; it’s not fun greenfield development with a lot of brand new code (which, of course, would be a problem-free fresh start…), but instead, probably a small PR with only a few lin...