Restore the system prompt: Opus follows instructions much worse now

restore the system prompt you deleted. opus is not usable anymore, it codes very well but it behave like a fucking brain rotted lobotomised guinea pig. it doesnt understand instrucitons, do random stuff. at this point we have to spend our day putting edge cases and limits in claude.md its not sustainable. maybe you didnt get any lowering in the code benchmark because he is very good at it. but whats the point of having a good coder that doenst understand instrucitons and do random shit instead. restore the system prompt this model is just not usable like this.