Query code architecture using README_AI.md index files. Use when user asks about project structure, where features are implemented, how modules work, or wants to understand codebase architecture. Triggered by questions like "what does this do", "where is X implemented", "how does module Y work".
Generate AI-friendly code index using codeindex tool. Use when user wants to index a project, generate README_AI.md files, create code documentation, or make codebase searchable. Triggered by "index this project", "generate code index", "create documentation", "scan codebase".