How i give my coding agent a map of the repo with Empryo

i built Empryo solo because i was tired of explaining the same repo to my coding agent. where things live, what calls what, which files usually need to change together. then a new session starts and i'm doing it again. Token usage bothered me too. A few prompts can involve a lot of reading, retries, and tool results. The prompt you type is only a...