What problem does it solve? Large or vaguely scoped work causes agents and developers to start coding without a plan, producing tangled implementations and missed requirements. This Skill turns a spec or clear requirements into an ordered set of small, verifiable tasks with explicit acceptance criteria, dependencies, and checkpoints. ## Core Features & Use Cases - Structured Planning Process: Read-only plan mode, dependency graph mapping, and vertical slicing so each task delivers working, testable functionality. - Task Templates and Sizing Rules: A standard task format (description, acceptance criteria, verification, dependencies, files touched) plus sizing guidelines that force oversized tasks to be broken down. - Plan and Task Outputs: Writes a plan document to tasks/plan.md and a task list to tasks/todo.md or an external tracker, with safeguards against overwriting incomplete plans. - Use Case: Given an approved PRD for a user registration feature, produce phased tasks (schema, API, UI) with checkpoints so each slice can be implemented and verified independently. ## Quick Start Ask the agent to break the current spec into an ordered task list with acceptance criteria and save the plan to tasks/plan.md.