Enable debugging and verify Prettier installation in

.github/workflows/ci-build-site.yml

@@ -109,6 +109,8 @@ jobs:
       - name: Prettify CSS and JS in public directories
         run: |
           # Format all CSS and JS files in both old and new public directories for easier comparison
+          set -x
+          which prettier
           sudo prettier --write "${{ steps.set-dirs.outputs.old_dir }}/public/**/*.css"
           sudo prettier --write "${{ steps.set-dirs.outputs.old_dir }}/public/**/*.js"
           sudo prettier --write "${{ steps.set-dirs.outputs.new_dir }}/public/**/*.css"