Use when the user wants to UNDERSTAND an unfamiliar codebase rather than change it. Triggers on phrases like "help me understand this codebase", "onboard me to this repo", "walk me through this project", "I'm lost in this codebase", "I joined a new team and need to ramp up", "quiz me on this code", "build me a map of this repo", "what does this code do", "I'm overwhelmed by this codebase". Designed for active-recall learning (visual map + Socratic quizzing) and explicitly NOT for refactoring, bug-fixing, or feature work. Do NOT trigger when the user wants code changes, fixes, or new features — those belong to other workflows.
