Mines every Claude Code session into a local SQLite database and provides a /mine skill with 18+ natural language query intents. Track costs, tokens, tools, projects, errors, cache efficiency, and full-text search across all your past conversations. Features automatic session ingestion via hooks, error memory that warns when you repeat mistakes, cost anomaly detection, project/global scope detection, and API value tracking with subscription ROI comparisons. Zero external dependencies (stdlib Python only)