What problem does it solve? Implementation plans become outdated as requirements change, and rewriting them from scratch wastes prior research. This Skill updates an existing plan file in flow/plans/ with surgical edits grounded in actual codebase reality, preserving what still works. ## Core Features & Use Cases - Feedback-Driven Plan Revision: Parses a plan file path plus requested changes, then makes precise edits while maintaining the plan's existing structure and file:line references. - Conditional Codebase Research: Spawns parallel research sub-tasks (codebase-locator, codebase-analyzer, codebase-pattern-finder) only when changes require new technical understanding. - Confirmation Before Editing: Presents an understanding summary and planned modifications for user approval before touching the plan file. - Use Case: After a plan review, a teammate asks to split Phase 2 into backend and frontend phases and add performance success criteria. Invoke the Skill with the plan path and feedback, and it updates phases, scope, and success criteria consistently. ## Quick Start Ask the AI to iterate on the plan at flow/plans/2025-10-16-feature.md by adding a phase for error handling and updating the success criteria.
