Still don't understand the point of the markdown files.
Isn't it literally all just more text you're adding to the prompt. How can you even be sure it isn't just clouding context with nonsense for whatever you're asking for?
You know it because you write the content of AGENTS.md. And if you are smart, you keep it brief and cover only the important things that anyone (human OR LLM) would want to know if working in this directory.
For skills, it only reads the summary telling it when to read the rest. So yes if you have too many skills, it can get confused and start reading all them and cloud the context. But if you have a few and they're used tactically, it's better than having to manually paste in prompts that you reuse a lot.
Similar reasoning with claude.md except it always reads the entire thing(?)