What problem does it solve? Large implementation tasks planned as a single monolithic document overflow context windows and cause coding agents to miss details, invent file paths, or skip error handling. This Skill decomposes requirements into a concise master plan plus self-contained phase files that any model can execute accurately. ## Core Features & Use Cases - Master Plan + Phase Files: Produces an overview plan under 80 lines plus detailed phase files under 200 lines each, with mandatory sections for data flow, code contracts, failure scenarios, and rejection criteria. - Wave-Based Task Grouping: Organizes tasks into parallel-safe waves with explicit dependency metadata, file-overlap detection, and cycle checks before execution. - Multiple Planning Modes: Supports implementation planning, feature specification (PRD-style specs), and roadmap planning with ICE scoring. - Use Case: Given a requirements document for a new authentication feature, the Skill scans the codebase, produces a 3-phase master plan, and writes phase files with exact file paths, test tasks, and acceptance criteria that a coding agent executes one phase per session. ## Quick Start Ask the agent to plan the implementation of your feature, for example: create a phased implementation plan for adding user authentication with email verification.
