Features: - Add admin command group for database operations - admin list-users: List all users from SQLite/PostgreSQL/MySQL - admin user-notes: List notes for specific user - Add CodiMDDatabase class for direct DB access
Features: - Note operations (list, get, create, update, delete) - User authentication (login, logout, status) - Export operations (markdown, PDF, HTML, slide) - Revision history - JSON output mode - REPL interactive mode - 46 tests passing (100%) - Python 3.7+ support