Restructure skill numbering: SEO 11-30, GTM 60-69, reserve 19-28 for future skills

Renumber 12 existing skills to new ranges:
- SEO: 11→13, 12→18, 13→16, 14→17, 15→14, 16→15, 17→29, 18→30, 19→12
- GTM: 20→60, 21→61, 22→62

Update cross-references in gateway architect/builder skills, GTM guardian
README, CLAUDE.md (skill tables + directory layout), and AGENTS.md
(domain routing ranges).

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

custom-skills/15-seo-search-console/desktop/SKILL.md

@@ -0,0 +1,126 @@
+---
+name: seo-search-console
+description: |
+  Google Search Console data analyzer for performance, queries, and index coverage.
+  Triggers: Search Console, GSC analysis, search performance, rankings, CTR optimization.
+---
+
+# SEO Search Console
+
+## Purpose
+
+Analyze Google Search Console data: search performance (queries, pages, CTR, position), sitemap status, and index coverage.
+
+## Core Capabilities
+
+1. **Performance Analysis** - Clicks, impressions, CTR, position
+2. **Query Analysis** - Top search queries
+3. **Page Performance** - Best/worst performing pages
+4. **Index Coverage** - Crawl and index issues
+5. **Sitemap Status** - Submission and processing
+
+## Data Collection
+
+### Option 1: User Provides Data
+Request GSC export from user:
+1. Go to Search Console > Performance
+2. Export data (CSV or Google Sheets)
+3. Share with assistant
+
+### Option 2: User Describes Data
+User verbally provides:
+- Top queries and positions
+- CTR trends
+- Coverage issues
+
+## Analysis Framework
+
+### Performance Metrics
+
+| Metric | What It Measures | Good Benchmark |
+|--------|------------------|----------------|
+| Clicks | User visits from search | Trending up |
+| Impressions | Search appearances | High for target keywords |
+| CTR | Click-through rate | 2-5% average |
+| Position | Average ranking | <10 for key terms |
+
+### Query Analysis
+
+Identify:
+- **Winners** - High position, high CTR
+- **Opportunities** - High impressions, low CTR
+- **Quick wins** - Position 8-20, low effort to improve
+
+### Page Analysis
+
+Categorize:
+- **Top performers** - High clicks, good CTR
+- **Underperformers** - High impressions, low CTR
+- **Declining** - Down vs previous period
+
+## Workflow
+
+1. Collect GSC data from user
+2. Analyze performance trends
+3. Identify top queries and pages
+4. Find optimization opportunities
+5. Check for coverage issues
+6. Provide actionable recommendations
+
+## Output Format
+
+```markdown
+## Search Console Analysis: [Site]
+
+### Overview (Last 28 Days)
+| Metric | Value | vs Previous |
+|--------|-------|-------------|
+| Clicks | X | +X% |
+| Impressions | X | +X% |
+| CTR | X% | +X% |
+| Position | X | +X |
+
+### Top Queries
+| Query | Clicks | Position | Opportunity |
+|-------|--------|----------|-------------|
+
+### Top Pages
+| Page | Clicks | CTR | Status |
+|------|--------|-----|--------|
+
+### Opportunities
+1. [Query with high impressions, low CTR]
+2. [Page ranking 8-20 that can improve]
+
+### Issues
+- [Coverage problems]
+- [Sitemap issues]
+
+### Recommendations
+1. [Priority action]
+```
+
+## Common Issues
+
+| Issue | Impact | Fix |
+|-------|--------|-----|
+| Low CTR on high-impression query | Lost traffic | Improve title/description |
+| Declining positions | Traffic loss | Update content, build links |
+| Not indexed pages | No visibility | Fix crawl issues |
+| Sitemap errors | Discovery problems | Fix sitemap XML |
+
+## Limitations
+
+- Requires user to provide GSC data
+- API access needs service account setup
+- Data has 2-3 day delay
+- Limited to verified properties
+
+## Notion Output (Required)
+
+All audit reports MUST be saved to OurDigital SEO Audit Log:
+- **Database ID**: `2c8581e5-8a1e-8035-880b-e38cefc2f3ef`
+- **Properties**: Issue (title), Site (url), Category, Priority, Found Date, Audit ID
+- **Language**: Korean with English technical terms
+- **Audit ID Format**: [TYPE]-YYYYMMDD-NNN
+

custom-skills/15-seo-search-console/desktop/skill.yaml

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+# Skill metadata (extracted from SKILL.md frontmatter)
+
+name: seo-search-console
+description: |
+  Google Search Console data analyzer for rankings, CTR, impressions, and index coverage. Triggers: Search Console, GSC, rankings, search performance, impressions, CTR.
+
+# Optional fields
+allowed-tools:
+  - mcp__perplexity__*
+  - mcp__notion__*
+
+# triggers: []  # TODO: Extract from description

custom-skills/15-seo-search-console/desktop/tools/notion.md

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+# Notion
+
+> TODO: Document tool usage for this skill
+
+## Available Commands
+
+- [ ] List commands
+
+## Configuration
+
+- [ ] Add configuration details
+
+## Examples
+
+- [ ] Add usage examples

custom-skills/15-seo-search-console/desktop/tools/perplexity.md

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+# Perplexity
+
+> TODO: Document tool usage for this skill
+
+## Available Commands
+
+- [ ] List commands
+
+## Configuration
+
+- [ ] Add configuration details
+
+## Examples
+
+- [ ] Add usage examples