init
Bootstrap a new mnemo knowledge base with taxonomy directory structure and a starter SCHEMA.md. Use when starting a new wiki, setting up a second brain, initializing a personal knowledge base, or when the user says "set up my wiki", "create a knowledge base", "initialize mnemo", or "start my second brain". Run once per project before the first ingest. After init, optionally wires the wiki into CLAUDE.md for future session memory.