Persistent filesystem memory across sessions — maintains memory/ with decisions.md, context.md, glossary.md and sessions/YYYY-MM-DD.md, loads and summarizes state at session start, appends decisions and open threads at session end, compacts monthly, and refuses secrets and transient noise. Use when the user says "remember this", "what did we decide about X", "pick up where we left off", or when starting or closing a session on a long-running project.
