Reduce repeated CLI builds and isolate CI publication

.github/workflows/deploy-pages.yml

@@ -9,6 +9,7 @@ on:
       - 'aggregator.html'
       - 'src/**'
       - 'test/browser-apps/**'
+      - 'manifest.json'
       - 'package.json'
       - 'package-lock.json'
       - '.github/workflows/deploy-pages.yml'
@@ -17,18 +18,17 @@ on:
       - 'aggregator.html'
       - 'src/**'
       - 'test/browser-apps/**'
+      - 'manifest.json'
       - 'package.json'
       - 'package-lock.json'
       - '.github/workflows/deploy-pages.yml'
 
 permissions:
   contents: read
-  pages: write
-  id-token: write
 
 concurrency:
-  group: pages
-  cancel-in-progress: false
+  group: ${{ github.workflow }}-${{ github.event.pull_request.number || github.ref }}
+  cancel-in-progress: ${{ github.event_name == 'pull_request' }}
 
 jobs:
   build:
@@ -84,9 +84,6 @@ jobs:
       - name: Validate packaged Pages site
         run: npm run test:browser-apps:pages
 
-      - name: Configure GitHub Pages
-        uses: actions/configure-pages@v6
-
       - name: Upload GitHub Pages artifact
         uses: actions/upload-pages-artifact@v5
         with:
@@ -97,10 +94,19 @@ jobs:
     if: github.event_name != 'pull_request'
     needs: build
     runs-on: ubuntu-latest
+    concurrency:
+      group: pages
+      cancel-in-progress: false
+    permissions:
+      pages: write
+      id-token: write
     environment:
       name: github-pages
       url: ${{ steps.deployment.outputs.page_url }}
     steps:
+      - name: Configure GitHub Pages
+        uses: actions/configure-pages@v6
+
       - name: Deploy GitHub Pages
         id: deployment
         uses: actions/deploy-pages@v5