A reusable Agent Skill for designing, reviewing, and implementing UI/UX with Google Material Design 3, Material You, M3 Expressive, accessibility, adaptive layouts, and semantic design tokens.

🖼️ AI agent skill for Claude Code & Codex — turns raw app screenshots into store-ready App Store & Google Play marketing images: device frames (iPhone·iPad·Galaxy·Fold·Flip), app-matched backgrounds, marketing copy, exact store sizes. 앱스토어·플레이스토어 마케팅 스크린샷 자동 생성