Fix GitHub Pages workflow artifact naming conflict

- Give unique names to artifacts in different jobs (github-pages-preview vs github-pages-cleanup)
- Add explicit artifact_name parameter to deploy-pages actions
- Resolves "Multiple artifacts named 'github-pages'" error in workflow runs

Co-authored-by: commjoen <[email protected]>

Author: Copilot

.github/workflows/github-pages-preview.yml

@@ -211,10 +211,13 @@ jobs:
         uses: actions/upload-pages-artifact@v3
         with:
           path: ./static-site
+          name: github-pages-preview
 
       - name: Deploy to GitHub Pages
         id: deployment
         uses: actions/deploy-pages@v4
+        with:
+          artifact_name: github-pages-preview
 
       - name: Comment PR with preview link
         uses: actions/github-script@v7
@@ -318,10 +321,13 @@ jobs:
         uses: actions/upload-pages-artifact@v3
         with:
           path: ./static-site
+          name: github-pages-cleanup
 
       - name: Deploy cleaned pages
         id: deployment
         uses: actions/deploy-pages@v4
+        with:
+          artifact_name: github-pages-cleanup
 
       - name: Comment PR cleanup completion
         uses: actions/github-script@v7