I have full control of my codebase. I'm not afraid to make changes to it because I know what I'm doing.

You would edit Claude.md to say things like what tech the project is using, because that's the entire point of claude.md. It's literally the solution to the exact problem you're complaining about. Any information you want it to know, you put in there and then it knows it. And you can tell Claude to make or update the file for you.

I'm not one of the people telling you how smart LLMs are. I'm telling you how to use it efficiently, by not expecting it to know everything but rather provide the information that it needs in order to be a more useful tool.