omh-refactor-plan

[omh] Hermes refactor planning workflow: turn a decided boundary-changing refactor into a phased plan — reconnaissance, contracts-first phase order, per-phase verification and rollback, a files table, and an explicit approval gate before any edit. Use when the user says: refactor-plan, refactor plan, plan this refactor, plan the refactor, refactor planning, refactor phases, phased refactor, refactor in phases.