docs: Update README.md with new skill listing and count

- Reorder skills to match new numbering scheme
- Add ourdigital-seo-audit skill to the list
- Update skill count to 9

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

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

README.md

@@ -4,16 +4,17 @@
 
 A collection of custom Claude Skills for OurDigital workflows, Jamie Plastic Surgery Clinic brand management, SEO tools, and Notion integrations.
 
-## Custom Skills
+## Custom Skills (9 skills)
 
 | Skill | Purpose |
 |-------|---------|
-| `ourdigital-visual-storytelling` | Blog featured image prompt generator |
-| `ourdigital-research-publisher` | Research-to-publication workflow |
 | `notion-organizer` | Notion workspace management |
 | `research-to-presentation` | Notion research to PPT/Figma |
 | `seo-gateway-strategist` | SEO gateway page strategy |
 | `gateway-page-content-builder` | Gateway page content generation |
+| `ourdigital-visual-storytelling` | Blog featured image prompt generator |
+| `ourdigital-research-publisher` | Research-to-publication workflow |
+| `ourdigital-seo-audit` | Comprehensive SEO audit & analysis |
 | `jamie-brand-editor` | Jamie Clinic branded content generation |
 | `jamie-brand-guardian` | Jamie Clinic content review & evaluation |