Switch to official actions/deploy-pages for GitHub Pages deployment

The peaceiris/actions-gh-pages approach was resulting in 404s on assets
despite .nojekyll being present. Using the official GitHub Pages Actions
deployment which bypasses Jekyll entirely.

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

Author: Shashikant86

.github/workflows/deploy.yml

@@ -6,12 +6,17 @@ on:
   workflow_dispatch:
 
 permissions:
-  contents: write
+  contents: read
+  pages: write
+  id-token: write
+
+concurrency:
+  group: pages
+  cancel-in-progress: false
 
 jobs:
-  build-and-deploy:
+  build:
     runs-on: ubuntu-latest
-
     steps:
       - name: Checkout
         uses: actions/checkout@v4
@@ -27,13 +32,18 @@ jobs:
       - name: Build
         run: npm run build
 
-      - name: Disable Jekyll
-        run: touch ./dist/.nojekyll
-
-      - name: Deploy to gh-pages
-        uses: peaceiris/actions-gh-pages@v4
+      - name: Upload artifact
+        uses: actions/upload-pages-artifact@v3
         with:
-          github_token: ${{ secrets.GITHUB_TOKEN }}
-          publish_dir: ./dist
-          publish_branch: gh-pages
-          force_orphan: true
+          path: ./dist
+
+  deploy:
+    environment:
+      name: github-pages
+      url: ${{ steps.deployment.outputs.page_url }}
+    runs-on: ubuntu-latest
+    needs: build
+    steps:
+      - name: Deploy to GitHub Pages
+        id: deployment
+        uses: actions/deploy-pages@v4