Add sub-skills from ui-ux-pro-max-skill repo

Added:
- banner-design (new)
- brand (new)
- design-system (new)
- slides (new)
- ui-ux-pro-max data/scripts (from GitHub clone)
- ui-styling data/scripts (from GitHub clone)

skills/website-creator/brand/references/visual-identity.md

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+# Visual Identity Basics
+
+## Core Visual Elements
+
+### Logo
+- **Primary:** Full logo (horizontal/stacked)
+- **Secondary:** Abbreviated version
+- **Icon/Mark:** Symbol only
+- **Clear space:** Minimum padding around logo
+- **Minimum size:** Smallest readable size
+
+### Color Palette
+```
+Primary Colors (1-2)
+├── Main brand color
+└── Supporting primary
+
+Secondary Colors (2-3)
+├── Accent colors
+└── Supporting visuals
+
+Neutrals (3-4)
+├── Text colors
+├── Background colors
+└── UI elements
+```
+
+### Typography
+| Usage | Font | Weight | Size |
+|-------|------|--------|------|
+| H1 | [Font] | Bold | 32-48px |
+| H2 | [Font] | Semibold | 24-32px |
+| Body | [Font] | Regular | 16-18px |
+| Caption | [Font] | Regular | 12-14px |
+
+## Visual Guidelines Template
+
+```markdown
+## Logo Usage
+
+### Correct Usage
+- [Guidelines for proper logo use]
+
+### Incorrect Usage
+- Don't stretch or distort
+- Don't change colors (unless approved)
+- Don't add effects
+- Don't place on busy backgrounds
+
+## Color Specifications
+
+### Primary Palette
+| Color | Hex | RGB | Usage |
+|-------|-----|-----|-------|
+| [Name] | #XXXXXX | r,g,b | [Where to use] |
+
+### Accessibility
+- Text contrast ratio: 4.5:1 minimum
+- Button contrast: WCAG AA compliant
+
+## Imagery Style
+
+### Photography
+- [Lighting preferences]
+- [Subject guidelines]
+- [Composition rules]
+- [Editing style]
+
+### Illustrations
+- [Style description]
+- [Color usage]
+- [Complexity level]
+
+### Icons
+- [Style: outlined/filled/duotone]
+- [Stroke weight]
+- [Corner radius]
+```
+
+## Quick Checks
+
+### Logo
+- [ ] Correct version for context
+- [ ] Sufficient clear space
+- [ ] Legible at size used
+- [ ] Correct color for background
+
+### Colors
+- [ ] From approved palette
+- [ ] Accessible contrast
+- [ ] Consistent across materials
+
+### Typography
+- [ ] Correct fonts
+- [ ] Appropriate hierarchy
+- [ ] Readable size