refactor(skills): Restructure skills to dual-platform architecture

Major refactoring of ourdigital-custom-skills with new numbering system:

## Structure Changes
- Each skill now has code/ (Claude Code) and desktop/ (Claude Desktop) versions
- New progressive numbering: 01-09 General, 10-19 SEO, 20-29 GTM, 30-39 OurDigital, 40-49 Jamie

## Skill Reorganization
- 01-notion-organizer (from 02)
- 10-18: SEO tools split into focused skills (technical, on-page, local, schema, vitals, gsc, gateway)
- 20-21: GTM audit and manager
- 30-32: OurDigital designer, research, presentation
- 40-41: Jamie brand editor and audit

## New Files
- .claude/commands/: Slash command definitions for all skills
- CLAUDE.md: Updated with new skill structure documentation
- REFACTORING_PLAN.md: Migration documentation
- COMPATIBILITY_REPORT.md, SKILLS_COMPARISON.md: Analysis docs

## Removed
- Old skill directories (02-05, 10-14, 20-21 old numbering)
- Consolidated into new structure with _archive/ for reference

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

.claude/commands/ourdigital-presentation.md

@@ -0,0 +1,42 @@
+# OurDigital Presentation
+
+Notion-to-presentation workflow for branded slides.
+
+## Triggers
+- "create presentation", "Notion to PPT", "프레젠테이션 만들기"
+
+## Capabilities
+
+1. **Notion Extraction** - Pull content from Notion pages
+2. **Content Synthesis** - Structure into slide format
+3. **Brand Application** - Apply corporate styling
+4. **Multi-format Output** - PowerPoint, Figma, HTML
+
+## Scripts
+
+```bash
+# Full automated workflow
+python ourdigital-custom-skills/32-ourdigital-presentation/code/scripts/run_workflow.py \
+  --notion-url [NOTION_URL] --output presentation.pptx
+
+# Step-by-step
+python ourdigital-custom-skills/32-ourdigital-presentation/code/scripts/extract_notion.py [URL] > research.json
+python ourdigital-custom-skills/32-ourdigital-presentation/code/scripts/synthesize_content.py research.json > synthesis.json
+python ourdigital-custom-skills/32-ourdigital-presentation/code/scripts/apply_brand.py synthesis.json --output presentation.pptx
+```
+
+## Pipeline
+
+```
+extract_notion.py → synthesize_content.py → apply_brand.py
+     ↓                    ↓                      ↓
+ research.json       synthesis.json         presentation.pptx
+```
+
+## Output Formats
+- PowerPoint (.pptx)
+- Figma (via API)
+- HTML preview
+
+## Environment
+- `NOTION_TOKEN` - Notion API token (required)