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>

ourdigital-custom-skills/18-seo-gateway-builder/code/CLAUDE.md

@@ -0,0 +1,82 @@
+# CLAUDE.md
+
+## Overview
+
+Gateway page content generator for local services. Creates SEO-optimized pages from location/service configurations.
+
+## Quick Start
+
+```bash
+# Generate pages from config
+python scripts/generate_pages.py --config config/services.json --locations config/locations.json
+```
+
+## Scripts
+
+| Script | Purpose |
+|--------|---------|
+| `generate_pages.py` | Generate gateway pages from templates |
+
+## Page Generator
+
+```bash
+# Generate all combinations
+python scripts/generate_pages.py \
+  --config config/services.json \
+  --locations config/locations.json \
+  --output ./pages
+
+# Single service/location
+python scripts/generate_pages.py \
+  --service "laser_hair_removal" \
+  --location "gangnam" \
+  --template templates/gateway-page-medical.md
+```
+
+## Configuration Files
+
+### services.json
+```json
+{
+  "services": [
+    {
+      "id": "laser_hair_removal",
+      "korean": "레이저 제모",
+      "keywords": ["laser hair removal", "permanent hair removal"]
+    }
+  ]
+}
+```
+
+### locations.json
+```json
+{
+  "locations": [
+    {
+      "id": "gangnam",
+      "korean": "강남",
+      "full_address": "서울특별시 강남구"
+    }
+  ]
+}
+```
+
+## Templates
+
+- `templates/gateway-page-medical.md` - Medical service template
+- Supports variables: `{{service}}`, `{{location}}`, `{{brand}}`
+
+## Output
+
+Generates markdown files with:
+- SEO-optimized title and meta
+- Structured content sections
+- Schema markup recommendations
+- Internal linking suggestions
+
+## Workflow
+
+1. Get strategy from `17-seo-gateway-architect`
+2. Configure services and locations
+3. Run generator for content drafts
+4. Review and customize output