[2.9.0] Rename plugin to compound-engineering

BREAKING: Plugin renamed from compounding-engineering to compound-engineering.
Users will need to reinstall with the new name:

  claude /plugin install compound-engineering

Changes:
- Renamed plugin directory and all references
- Updated documentation counts (24 agents, 19 commands)
- Added julik-frontend-races-reviewer to docs

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

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

.github/workflows/deploy-docs.yml

@@ -4,7 +4,7 @@ on:
   push:
     branches: [main]
     paths:
-      - 'plugins/compounding-engineering/docs/**'
+      - 'plugins/compound-engineering/docs/**'
   workflow_dispatch:
 
 permissions:
@@ -32,7 +32,7 @@ jobs:
       - name: Upload artifact
         uses: actions/upload-pages-artifact@v3
         with:
-          path: 'plugins/compounding-engineering/docs'
+          path: 'plugins/compound-engineering/docs'
 
       - name: Deploy to GitHub Pages
         id: deployment