so, now we use a github actions marketplace pnpm setup script. this resolves the missing pnpm error from the node.js setup script. the pnpm setup script also performs the environment setup so we removed the manual PNPM_HOME variable setup step and PATH variable setup step, and the pnpm global bin setup step. Not sure why AI didn't suggest using this marketplace item earlier. dumb.

We also don't need to install Antora globally. antora is now in the devdependencies in the `site` directory's package.json, so any calls to antora through pnpm should use the copy of antora that is local to the project.

Author: AMDphreak

.github/workflows/build-and-deploy.yml

@@ -27,22 +27,17 @@ jobs:
       - name: Configure Pages
         uses: actions/configure-pages@v5
 
+      - name: Install pnpm
+        uses: pnpm/action-setup/@v4
+        with:
+          package_json_file: 'site/package.json'
+
       - name: Set up Node.js ${{ matrix.node-version }}
         uses: actions/setup-node@v5
         with:
           node-version: ${{ matrix.node-version }}
           cache: 'pnpm'
           cache-dependency-path: 'site/pnpm-lock.yaml'
-      - name: Configure PNPM_HOME and add to PATH
-        run: |
-          echo "PNPM_HOME=${HOME}/.local/share/pnpm" >> $GITHUB_ENV
-          echo "${HOME}/.local/share/pnpm" >> $GITHUB_PATH
-
-      - name: Setup pnpm global bin directory
-        run: pnpm setup
-
-      - name: Install Antora
-        run: pnpm add -g antora
 
       - name: Install dependencies
         working-directory: ./site