[webchannel] Add GitHub Actions workflow to deploy message generator demo

.github/workflows/webchannel-deploy-message-generator.yml

@@ -0,0 +1,53 @@
+name: Deploy WebChannel Message Generator Demo to GitHub Pages
+
+on:
+  push:
+    branches: ["main"]
+  workflow_dispatch:
+
+permissions:
+  contents: read
+  pages: write
+  id-token: write
+
+concurrency:
+  group: "pages"
+  cancel-in-progress: false
+
+jobs:
+  deploy:
+    environment:
+      name: github-pages
+      url: ${{ steps.deployment.outputs.page_url }}
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout
+        uses: actions/checkout@11bd71901bbe5b1630ceea73d27597364c9af683 # v4.2.2
+
+      - name: Setup Node.js
+        uses: actions/setup-node@1d0ff469b7ec7b3cb9d8673fde0c81c44821de2a # v4.2.0
+        with:
+          node-version: 20
+
+      - name: Install dependencies and Build Demo
+        run: |
+          cd webchannel/js/demo
+          npm ci
+          npm run build
+
+      - name: Prepare site directory
+        run: |
+          mkdir -p _site/webchannel/message_generator
+          cp -r webchannel/js/demo/index.html webchannel/js/demo/dist _site/webchannel/message_generator/
+
+      - name: Setup Pages
+        uses: actions/configure-pages@983d7736d9b0ae728b81ab479565c72886d7745b # v5.0.0
+
+      - name: Upload Artifact
+        uses: actions/upload-pages-artifact@56afc609e74202658d3ffba0e8f6dda462b719fa # v3.0.1
+        with:
+          path: '_site'
+
+      - name: Deploy to GitHub Pages
+        id: deployment
+        uses: actions/deploy-pages@d6db90164ac5ed86f2b6aed7e0febac5b3c0c03e # v4.0.5

webchannel/js/demo/index.html

@@ -99,6 +99,6 @@ <h3 style="margin: 0;">Connection Logs</h3>
     <textarea id="log" readonly></textarea>
   </div>
 
-  <script src="dist/demo.js"></script>
+  <script src="dist/message_generator.js"></script>
 </body>
 </html>

webchannel/js/demo/package.json

@@ -1,10 +1,10 @@
 {
-  "name": "webchannel-ts-demo",
+  "name": "webchannel-message-generator-demo",
   "version": "1.0.0",
-  "description": "TypeScript Web Demo for WebChannel",
+  "description": "TypeScript Web Message Generator Demo for WebChannel",
   "scripts": {
-    "build": "esbuild demo.ts --bundle --outfile=dist/demo.js --platform=browser",
-    "start": "esbuild demo.ts --bundle --outfile=dist/demo.js --platform=browser && node server.js"
+    "build": "esbuild message_generator.ts --bundle --outfile=dist/message_generator.js --platform=browser",
+    "start": "esbuild message_generator.ts --bundle --outfile=dist/message_generator.js --platform=browser && node server.js"
   },
   "devDependencies": {
     "esbuild": "^0.25.12"