I handle the context problem by splitting the details to dozens of small md files. Agents.md acts as a router that directs the llm to correct documentation file/folder according to the task at hand.
replyThis documentation is its own git repo, and the agents.md file has an explicit instruction to update the docs when it has learned something general that can be useful in future sessions. I then occasionally review and prune those docs.
That's exactly what skills do.
replyThe description in the front-matter (at the top of the skill markdown file) is the only thing in the context and used by the agent to determine when to read in the rest of the skill file.