Impact analysis and refactoring planning with Cartographing Kittens' dependency graph. Use when the user asks "what depends on X", "what breaks if I change Y", "blast radius", "impact analysis", "who imports this", "who calls this", "what does X depend on", "dependency tree", or is planning a refactor, rename, or deletion. Use find_dependents for blast radius and find_dependencies for understanding what a symbol needs. Requires the Cartographing Kittens MCP server (`uvx cartographing-kittens`).