spec-author-greenfield

Author a feature spec design-first, for something not yet built, including a user-flow contract when a journey warrants one. Use when the user says "let's spec this before we build it", "capture the design for this feature", "think through the edge cases first", or is planning a new feature and wants intent, paths, and open questions recorded before code. Pairs with spec-author-from-impl for features that already exist.