What problem does it solve? Design risk often closes after the PRD instead of alongside it, so teams discover usability problems late when rework is expensive. This Skill runs structured 30/60/90% Design Signal checkpoints that declare design confidence based on evidence, keeping the design lane synchronized with PRD Forming, Storming, and Norming stages. ## Core Features & Use Cases - Three staged checkpoints: 30% (conceptual flows plus named UX risks), 60% (testable prototype with usability findings and risk closure plans), and 90% (dev-ready design with state coverage, edge cases, and accepted residual risks). - Evidence-based signal declaration: a standard report template with evidence tables, risk registers, and go/hold recommendations, where the declared percentage must come from evidence rather than the calendar. - Use Case: Before PI Planning, run the 90% checkpoint to sweep every screen for empty/error/loading states, have an engineer walk the handoff for unanswered questions, and produce a dev-ready design report that gates delivery commitment. ## Quick Start Run a 60% design signal checkpoint for the checkout redesign feature and produce the report with evidence and go/hold recommendation.
