What problem does it solve? When requirements shift or a phase reveals unexpected complexity mid-implementation, rewriting a plan from scratch wastes prior work and loses context. This Skill updates only the affected parts of an existing plan file while preserving completed phases and document structure. ## Core Features & Use Cases - Minimal Surgical Edits: Adds, removes, or reorders phases without rewriting unaffected sections, and preserves phases already marked complete. - Change Classification: Distinguishes scope changes, technical changes, approach changes, and discoveries before proposing edits. - Consistency Verification: Checks phase dependencies, success criteria, and the "What We're NOT Doing" section after every edit. - Use Case: During implementation of a multi-phase feature plan, an automated check fails and forces a different approach for Phase 3. Use this Skill to update only Phase 3 and its dependencies, then resume implementation from the corrected phase. ## Quick Start Ask the AI to iterate on your existing plan file at a given path, explaining what changed and why, then confirm the proposed edits before they are written.
