What problem does it solve? Building frontend UIs requires both product planning and visual design judgment, and mixing the two in one agent produces generic, constrained results. This Skill lets the main agent hand off all visual decisions to a specialized DESIGN subagent by writing a well-scoped creative brief. ## Core Features & Use Cases - Subagent Delegation: Launch a DESIGN-specialized subagent via startAsyncSubagent or subagent with the required specialization parameter. - Three Task Modes: Supports fullstack apps (react-vite with backend hooks), mockup sandboxes (prototypes and variant exploration), and presentation-heavy pages (landing pages, portfolios, brand sites). - Brief Writing Guidance: Provides rules for product identity, vibe direction, emotional tone by app type, color mandates, and micro-interaction expectations. - Use Case: After planning a CRM app's pages, data types, and API hooks, delegate the entire UI build to the DESIGN subagent with a brief describing the product identity and routes, letting it own all layout, color, and typography decisions. ## Quick Start Delegate the frontend build of my app to a DESIGN subagent with a creative brief covering the product identity, pages, data types, and API hooks.