refactor(gtm): Split into lightweight audit and comprehensive manager

- 13-ourdigital-gtm-audit: Lightweight audit-only tool (original)
  - GTM container validation
  - DataLayer event checking
  - Form and checkout analysis
  - No Notion integration, no inject mode

- 14-ourdigital-gtm-manager: Comprehensive management toolkit
  - Full audit capabilities
  - DataLayerInjector for custom HTML tag generation
  - Notion integration for audit logging
  - 20+ GA4 event templates

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

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

ourdigital-custom-skills/14-ourdigital-gtm-manager/docs/report_template.md

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+# GTM Audit Report Template
+
+## Executive Summary
+
+| Metric | Status |
+|--------|--------|
+| Container Installed | ✅ / ❌ |
+| Container Valid | ✅ / ❌ |
+| DataLayer Active | ✅ / ❌ |
+| Tags Firing | X of Y |
+| Critical Issues | X |
+| Warnings | X |
+
+## Container Status
+
+**Container ID**: GTM-XXXXXX
+**Installation Position**: head / body
+**Multiple Containers**: Yes / No
+**Noscript Fallback**: Present / Missing
+
+### Issues Found
+- [ ] Issue description
+
+## DataLayer Analysis
+
+### Events Captured
+| Event Name | Count | Has Issues |
+|------------|-------|------------|
+| page_view | 1 | No |
+| add_to_cart | 0 | - |
+
+### DataLayer Quality
+- [ ] Initialized before GTM
+- [ ] Standard event naming
+- [ ] Correct data types
+- [ ] E-commerce structure valid
+
+## Tag Firing Report
+
+### Tags Fired ✅
+| Destination | Events | Parameters |
+|-------------|--------|------------|
+| GA4 | page_view | page_location, page_title |
+| Meta Pixel | PageView | - |
+
+### Tags Not Detected ⚠️
+| Expected Tag | Reason | Priority |
+|--------------|--------|----------|
+| GA4 purchase | Event not triggered | High |
+
+## Network Request Analysis
+
+Total requests captured: X
+
+### By Destination
+| Destination | Requests | Status |
+|-------------|----------|--------|
+| GA4 | X | ✅ |
+| Meta | X | ✅ |
+| Google Ads | 0 | ⚠️ |
+
+## Issues & Recommendations
+
+### Critical 🔴
+1. **Issue Title**
+   - Description
+   - Impact
+   - Recommended Fix
+
+### Warning 🟡
+1. **Issue Title**
+   - Description
+   - Recommended Fix
+
+### Info 🔵
+1. **Issue Title**
+   - Description
+
+## Action Items Checklist
+
+### Immediate (Critical)
+- [ ] Action item 1
+- [ ] Action item 2
+
+### Short-term (This Week)
+- [ ] Action item 3
+
+### Long-term (This Month)
+- [ ] Action item 4
+
+## Technical Details
+
+### Environment
+- URL Audited: https://example.com
+- Audit Timestamp: YYYY-MM-DD HH:MM:SS
+- Browser: Chromium (headless)
+- Viewport: 1920x1080
+
+### Raw Data
+Full JSON report available at: `gtm_audit_report.json`
+
+---
+
+## Appendix: Tag Destination Reference
+
+| Tag Type | Network Pattern |
+|----------|-----------------|
+| GA4 | google-analytics.com/g/collect |
+| UA (Legacy) | google-analytics.com/collect |
+| Google Ads | googleads.g.doubleclick.net |
+| Meta Pixel | facebook.com/tr |
+| LinkedIn | px.ads.linkedin.com |
+| TikTok | analytics.tiktok.com |
+| Kakao | pixel.kakao.com |
+| Naver | wcs.naver.com |