Fix GitHub Pages workflow to use npm and website/ directory

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

Author: phucbm

.github/workflows/demo.yml

@@ -21,24 +21,20 @@ jobs:
       url: ${{ steps.deployment.outputs.page_url }}
     steps:
       - uses: actions/checkout@v4
-      - uses: pnpm/action-setup@v4
-        with:
-          version: 10
       - uses: actions/setup-node@v4
         with:
           node-version: 20
-          cache: 'pnpm'
-      - name: Install root deps
-        run: pnpm install
-      - name: Install demo deps
-        run: cd demo && pnpm install
-      - name: Build registry
-        run: pnpm registry:build
-      - name: Build demo
-        run: cd demo && pnpm build
+          cache: 'npm'
+          cache-dependency-path: website/package-lock.json
+      - name: Install deps
+        run: npm ci
+        working-directory: website
+      - name: Build
+        run: npm run build
+        working-directory: website
       - uses: actions/configure-pages@v4
       - uses: actions/upload-pages-artifact@v3
         with:
-          path: demo/dist
+          path: website/dist
       - uses: actions/deploy-pages@v4
         id: deployment