Following instructions. I've got a modest sized CLAUDE.md containing some simple rules to follow. Things to always do, things to never do. Not a day goes by where Claude Opus violates one or several of the instructions. He keeps making Django multi line template comment bugs. He keeps using -r with ripgrep thinking that means recursive, when actually that's a replacement instruction, he hits that problem several times each day. He sometimes just goes ahead and does a git commit without my approval. All of this is spelled out in CLAUDE.md but he forgets. He apologizes profusely when it happens. Tiring.