One command to add structured markup to your AI agent

I've been keeping a personal knowledge base for years. Notes, specs, decisions, journal entries - all in plain text files. When AI agents became part of my workflow, I started using them to write structured documents: RFC drafts, revision histories, typed notes with metadata. It worked well. Until I closed the session. The next agent would open the same file and start from scratch - not because it forgot, but because the file gave no structure to hold onto. That's when I started looking at the format, not the model. The problem I kept running into My knowledge base has hundreds of files.