What problem does it solve? A PRD states what to build but not in what order, what can run in parallel, or how to prove each piece is done. This Skill turns an approved PRD into a tracked set of executable task files, preventing heroic single-pass changes and arbitrary build orders that break halfway. ## Core Features & Use Cases - Dependency-First Decomposition: Maps a producer-to-consumer dependency graph, slices work vertically into demoable tracer bullets, and handles wide refactors via expand-migrate-contract sequencing. - Fully Specified Task Files: Writes one file per task under tasks/<name>/ with acceptance criteria, five-way verification, blocking edges, size estimates, and rollback procedures, plus a plan.md index with risks and parallelization classification. - Use Case: You have an approved PRD at docs/prd/billing.md for a new billing module. Run this Skill to produce tasks/billing/task-01.md through task-NN.md in dependency order, with checkpoints and a plan document, ready to hand off to incremental implementation. ## Quick Start Break down the approved PRD at docs/prd/billing.md into executable task files with acceptance criteria and a plan document.