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/CLAUDE.md

@@ -0,0 +1,89 @@
+# CLAUDE.md
+
+## Overview
+
+Notion workspace management toolkit for database organization, schema migration, and bulk operations.
+
+## Quick Start
+
+```bash
+pip install -r scripts/requirements.txt
+
+# Schema migration
+python scripts/schema_migrator.py --source [DB_ID] --target [DB_ID] --dry-run
+
+# Async bulk operations
+python scripts/async_organizer.py --database [DB_ID] --action cleanup
+```
+
+## Scripts
+
+| Script | Purpose |
+|--------|---------|
+| `schema_migrator.py` | Migrate data between databases with property mapping |
+| `async_organizer.py` | Async bulk operations (cleanup, restructure, archive) |
+
+## Schema Migrator
+
+```bash
+# Dry run (preview changes)
+python scripts/schema_migrator.py \
+  --source abc123 \
+  --target def456 \
+  --mapping mapping.json \
+  --dry-run
+
+# Execute migration
+python scripts/schema_migrator.py \
+  --source abc123 \
+  --target def456 \
+  --mapping mapping.json
+```
+
+### Mapping File Format
+
+```json
+{
+  "properties": {
+    "OldName": "NewName",
+    "Status": "Status"
+  },
+  "transforms": {
+    "Date": "date_to_iso"
+  }
+}
+```
+
+## Async Organizer
+
+```bash
+# Cleanup empty/stale pages
+python scripts/async_organizer.py --database [ID] --action cleanup
+
+# Archive old pages
+python scripts/async_organizer.py --database [ID] --action archive --days 90
+
+# Restructure hierarchy
+python scripts/async_organizer.py --database [ID] --action restructure
+```
+
+## Rate Limits
+
+| Limit | Value |
+|-------|-------|
+| Requests/second | 3 max |
+| Items per request | 100 max |
+| Retry on 429 | Exponential backoff |
+
+## Configuration
+
+Environment variables:
+```bash
+NOTION_TOKEN=secret_xxx
+```
+
+## Notes
+
+- Always use `--dry-run` first for destructive operations
+- Large operations (1000+ pages) use async with progress reporting
+- Scripts implement automatic rate limiting