What problem does it solve? The upstream brainstorming workflow commits a design document and jumps directly into implementation planning, skipping any structured review. This Skill closes that gap by inserting a mandatory design review gate so architectural, security, and requirements issues are caught before expensive implementation begins. ## Core Features & Use Cases - Mandatory Review Gate: Routes every committed design document through five parallel review agents (Product Manager, Architect, Designer, Security Design, CTO) that must all approve before planning proceeds. - Redundant Enforcement: Uses three mechanisms — CLAUDE.md workflow rules, the /start-task command handoff block, and this skill document — so the gate cannot be silently bypassed. - Iteration and Escalation: Supports up to three revision cycles when reviewers request changes, then escalates to a human decision (Override, Defer, or Cancel). - Use Case: After brainstorming a new feature design, the Skill automatically spawns the five-agent review panel, reports a verdict table, and only then allows writing-plans and orchestrated execution to proceed. ## Quick Start After brainstorming finishes and the design document is committed, run the design review gate on it and wait for all five reviewers to approve before starting implementation planning.