design-systems: add 74 brand DESIGN.md files (VoltAgent/awesome-design-md)

- 74 brands: airbnb, stripe, apple, figma, linear, vercel, etc.
- 147 files: DESIGN.md + README.md per brand (~2.1 MB)
- Each DESIGN.md contains structured brand analysis (colors, typography, components)
- Updated 00-overview.md with new design-systems directory

prompts/system/00-system-prompts.md

@@ -0,0 +1,50 @@
+---
+name: system-prompts
+title: System Pattern LLM Prompts
+description: Ready-to-use prompts for system patterns with wiki patterns.
+---
+
+# System Pattern Prompts
+
+## 1. Design Tokens
+
+```
+Create complete design tokens:
+- Color palette: bg, surface, border, text (primary, secondary, muted), accent
+- Spacing: 4,8,12,16,20,24,32,40,48,64,80,96,128
+- Typography: xs(12), sm(14), base(16), lg(18), xl(20), 2xl(24), 3xl(30), 4xl(36)
+- Motion: ease-out, duration-normal(300ms), duration-slow(500ms)
+- Border-radius: sm(4), md(8), lg(16), xl(24), full(9999)
+- All as CSS custom properties
+```
+
+## 2. Component Patterns
+
+```
+Create reusable component patterns:
+- Buttons: primary, secondary, ghost (3 variants)
+- Inputs: default, focus, error (3 states)
+- Cards: default, featured (2 variants)
+- Badges: default, accent (2 variants)
+- All with consistent padding, border-radius, transitions
+```
+
+## 3. CSS Architecture
+
+```
+Create CSS architecture:
+- File structure: tokens/, base/, components/, layouts/, pages/
+- Naming: BEM methodology
+- No !important
+- No hardcoded values
+- Mobile-first media queries
+- Custom properties for theming
+```
+
+## Anti-Patterns
+
+1. Never use inline styles
+2. Never use !important
+3. Never hardcode values
+4. Never mix design systems
+5. Never skip accessibility