refactor: Reorganize skill numbering and update documentation

Skill Numbering Changes:
- 01-03: OurDigital core (was 30-32)
- 31-32: Notion tools (was 01-02)
- 99_archive: Renamed from _archive for sorting

New Files:
- AGENTS.md: Claude Code agent routing guide
- requirements.txt for 00-claude-code-setting, 32-notion-writer, 43-jamie-youtube-manager

Documentation Updates:
- CLAUDE.md: Updated skill inventory (23 skills)
- AUDIT_REPORT.md: Current completion status (91%)
- Archived REFACTORING_PLAN.md (most tasks complete)

Removed:
- ga-agent-skills/ (moved to separate repo ~/Project/dintel-ga4-agent)

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

custom-skills/31-notion-organizer/code/scripts/requirements.txt

@@ -0,0 +1,26 @@
+# Notion Organizer Scripts - Requirements
+# Python 3.10+ required
+
+# Notion API client
+notion-client==2.2.1
+
+# Async HTTP
+aiohttp==3.9.1
+
+# Rate limiting
+asyncio-throttle==1.0.2
+
+# Environment variables
+python-dotenv==1.0.0
+
+# Retry logic
+tenacity==8.2.3
+
+# Progress bars
+tqdm==4.66.1
+
+# Optional: Data analysis
+# pandas==2.1.4
+
+# Optional: Fuzzy matching for duplicates
+# rapidfuzz==3.5.2