What problem does it solve? It bridges the gap between a high-level OpenSpec change proposal and implementation by producing a deep technical Design Doc with traceable, script-generated context instead of ad-hoc agent summaries. ## Core Features & Use Cases - Script-Generated Handoff Packages: Runs comet handoff to create hash-traceable design-context or spec-context packages from proposal.md, design.md, tasks.md, and delta specs. - Guided Brainstorming with Blocking Confirmation: Loads the Superpowers brainstorming skill, iterates on technical approach, risks, and test strategy, and blocks until the user explicitly confirms the design proposal. - State and Guard Enforcement: Records the Design Doc path in .comet.yaml, regenerates handoff hashes when delta specs change, and runs comet guard design --apply to auto-transition to the build phase. - Use Case: After drafting an OpenSpec change for a new API capability, invoke this phase to produce a confirmed, frontmatter-compliant Design Doc under docs/superpowers/specs/ before any build work begins. ## Quick Start Invoke /comet-design for the active change and follow the brainstorming flow to confirm and persist the technical Design Doc.