feat: Replace custom IndexNow script with GitHub Action

- Use bojieyang/indexnow-action@v2 from GitHub Marketplace
- Store IndexNow key securely in GitHub secrets
- Automatic sitemap parsing and submission
- Better error handling and maintenance

Author: nicolasiscoding

.github/workflows/deploy.yml

@@ -44,7 +44,7 @@ jobs:
 
       - name: Submit URLs to IndexNow
         if: github.ref == 'refs/heads/main'
-        run: node scripts/submit-to-indexnow.js
-        env:
-          SITE_URL: https://docs.turbodocx.com
-          MAX_URLS: 100
+        uses: bojieyang/indexnow-action@v2
+        with:
+          sitemap-location: https://docs.turbodocx.com/sitemap.xml
+          key: ${{ secrets.INDEXNOW_KEY }}