why coding instructions are usually not helpful:
>line 500 of claude. md: please use functionX for Y
>new model/harness says "yeah never use functionX anymore"
>model has completely contradictory instructions and will silently fail all the time, eventually forcing a debug session
I ~never use special coding prompts or setups. Any hardcoded hacks that work now will be outdated/actively harmful within a few months. I just explain my rationale and recommended preferences, maybe point it to official system prompts, and let it work.