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/seo-gsc.md

@@ -0,0 +1,37 @@
+# SEO Search Console
+
+Google Search Console data retrieval and analysis.
+
+## Triggers
+- "get GSC data", "Search Console report", "search performance"
+
+## Capabilities
+
+1. **Search Performance** - Clicks, impressions, CTR, position
+2. **Query Analysis** - Top queries, trending keywords
+3. **Page Performance** - Best/worst performing pages
+4. **Index Coverage** - Indexed pages, errors, warnings
+
+## Scripts
+
+```bash
+# Get search performance
+python ourdigital-custom-skills/16-seo-search-console/code/scripts/gsc_client.py \
+  --site https://example.com --days 28
+
+# Query analysis
+python ourdigital-custom-skills/16-seo-search-console/code/scripts/gsc_client.py \
+  --site https://example.com --report queries --limit 100
+
+# Page performance
+python ourdigital-custom-skills/16-seo-search-console/code/scripts/gsc_client.py \
+  --site https://example.com --report pages --output pages_report.json
+```
+
+## Environment
+- `GOOGLE_APPLICATION_CREDENTIALS` - Service account JSON path (required)
+
+## Output
+- CSV/JSON performance data
+- Trend analysis
+- Actionable insights