Safe code elimination with two modes: (A) Surgical removal of active features, (B) Dead code cleanup with 11-level verification. Use when: user says "remove feature", "delete functionality", "clean dead code", "unused code", "eliminate", "get rid of", "we don't need this anymore", or any code removal task. NOT for: refactoring (changing code structure without removing functionality). ALWAYS identify mode (active vs dead) BEFORE proceeding.
