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/99_archive/seo-audit-agent/templates/schema_templates/breadcrumb.json

@@ -0,0 +1,24 @@
+{
+  "@context": "https://schema.org",
+  "@type": "BreadcrumbList",
+  "itemListElement": [
+    {
+      "@type": "ListItem",
+      "position": 1,
+      "name": "{{level_1_name}}",
+      "item": "{{level_1_url}}"
+    },
+    {
+      "@type": "ListItem",
+      "position": 2,
+      "name": "{{level_2_name}}",
+      "item": "{{level_2_url}}"
+    },
+    {
+      "@type": "ListItem",
+      "position": 3,
+      "name": "{{level_3_name}}",
+      "item": "{{level_3_url}}"
+    }
+  ]
+}