Design system and anti-patterns for professional UI. Ensures apps don't look "AI generated". Defines color palettes, typography, spacing, animations, and common anti-patterns to avoid. Used by Design Reviewer sub-agent to polish UI. Triggers: design review, polish UI, improve aesthetics, looks like AI made it, design system, style guide, make it beautiful.
Design apps that feel human-crafted, not AI-generated. Avoid obvious patterns and generic templates.
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