ci: add deploy action

Author: nzbin

.github/workflows/deploy.yml

@@ -0,0 +1,38 @@
+name: Deploy
+
+on:
+  push:
+    branches:
+      - main
+
+jobs:
+  deploy:
+    runs-on: ubuntu-latest
+    env:
+      PUBLISH_DIR: ./dist/dev-app/browser
+    steps:
+      - name: Checkout code
+        uses: actions/checkout@v4
+
+      - name: Set up Node.js
+        uses: actions/setup-node@v4
+        with:
+          node-version: '22'
+
+      - name: Install dependencies
+        run: yarn
+
+      - name: Build site
+        run: npm run build
+
+      - name: Create 404.html
+        run: cp ${{ env.PUBLISH_DIR }}/index.html ${{ env.PUBLISH_DIR }}/404.html
+
+      - name: Deploy to gh-pages
+        uses: peaceiris/actions-gh-pages@v3
+        with:
+          github_token: ${{ secrets.GITHUB_TOKEN }}
+          publish_dir: ${{ env.PUBLISH_DIR }}
+          publish_branch: gh-pages
+          user_name: 'github-actions[bot]'
+          user_email: 'github-actions[bot]@users.noreply.github.com'