Making CLAUDE.md too long is like carrying unused dumbbells in your bag

I’ve been thinking about how to structure CLAUDE.md / AGENTS.md for long AI coding sessions. Making these files too long feels like carrying unused dumbbells in your bag every time you leave the house. They are useful in the right situation. But you probably don’t need to carry them everywhere. If every instruction goes into one huge CLAUDE.md , the assistant has to keep reading context that may not matter for the current task. That can create a few problems: more context cost every session important rules