refactor: move nested skills to root + add ui-ux-pro-max + ConsentOS

- Extract 9 nested skills from website-creator/ to root skills/
- Remove duplicate seo-analyzers, seo-geo, seo-multi-channel from website-creator
- Add new ui-ux-pro-max skill with full UI/UX data
- Update install-skills.sh to sync properly
- Remove .DS_Store artifacts

Moved skills:
- api-and-interface-design
- banner-design
- brand
- design-system
- design
- frontend-ui-engineering
- slides
- spec-driven-development
- ui-styling

skills/slides/SKILL.md

@@ -0,0 +1,42 @@
+---
+name: ckm:slides
+description: Create strategic HTML presentations with Chart.js, design tokens, responsive layouts, copywriting formulas, and contextual slide strategies.
+argument-hint: "[topic] [slide-count]"
+metadata:
+  author: claudekit
+  version: "1.0.0"
+---
+
+# Slides
+
+Strategic HTML presentation design with data visualization.
+
+<args>$ARGUMENTS</args>
+
+## When to Use
+
+- Marketing presentations and pitch decks
+- Data-driven slides with Chart.js
+- Strategic slide design with layout patterns
+- Copywriting-optimized presentation content
+
+## Subcommands
+
+| Subcommand | Description | Reference |
+|------------|-------------|-----------|
+| `create` | Create strategic presentation slides | `references/create.md` |
+
+## References (Knowledge Base)
+
+| Topic | File |
+|-------|------|
+| Layout Patterns | `references/layout-patterns.md` |
+| HTML Template | `references/html-template.md` |
+| Copywriting Formulas | `references/copywriting-formulas.md` |
+| Slide Strategies | `references/slide-strategies.md` |
+
+## Routing
+
+1. Parse subcommand from `$ARGUMENTS` (first word)
+2. Load corresponding `references/{subcommand}.md`
+3. Execute with remaining arguments