feat(skills): Add mandatory Notion output requirement to all audit skills

All SEO (10-18) and GTM (20-21) skills now require saving reports to:
- Database: OurDigital SEO Audit Log (2c8581e5-8a1e-8035-880b-e38cefc2f3ef)
- Format: Korean content with English technical terms
- Audit ID: [TYPE]-YYYYMMDD-NNN

Updated files:
- 9 SEO skills (code/CLAUDE.md + desktop/SKILL.md)
- 2 GTM skills (code/CLAUDE.md + desktop/SKILL.md)

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

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

custom-skills/14-seo-schema-generator/code/CLAUDE.md

@@ -119,3 +119,38 @@ jsonschema>=4.21.0
 requests>=2.31.0
 python-dotenv>=1.0.0
 ```
+
+## Notion Output (Required)
+
+**IMPORTANT**: All audit reports MUST be saved to the OurDigital SEO Audit Log database.
+
+### Database Configuration
+
+| Field | Value |
+|-------|-------|
+| Database ID | `2c8581e5-8a1e-8035-880b-e38cefc2f3ef` |
+| URL | https://www.notion.so/dintelligence/2c8581e58a1e8035880be38cefc2f3ef |
+
+### Required Properties
+
+| Property | Type | Description |
+|----------|------|-------------|
+| Issue | Title | Report title (Korean + date) |
+| Site | URL | Audited website URL |
+| Category | Select | Technical SEO, On-page SEO, Performance, Schema/Structured Data, Sitemap, Robots.txt, Content, Local SEO |
+| Priority | Select | Critical, High, Medium, Low |
+| Found Date | Date | Audit date (YYYY-MM-DD) |
+| Audit ID | Rich Text | Format: [TYPE]-YYYYMMDD-NNN |
+
+### Language Guidelines
+
+- Report content in Korean (한국어)
+- Keep technical English terms as-is (e.g., SEO Audit, Core Web Vitals, Schema Markup)
+- URLs and code remain unchanged
+
+### Example MCP Call
+
+```bash
+mcp-cli call notion/API-post-page '{"parent": {"database_id": "2c8581e5-8a1e-8035-880b-e38cefc2f3ef"}, "properties": {...}}'
+```
+