Add GitHub Actions workflow to deploy JSDoc to GitHub

.github/workflows/deploy-docs.yml

@@ -0,0 +1,63 @@
+name: Deploy JSDoc to GitHub Pages
+
+on:
+  push:
+    tags:
+      - 'docs-*'
+  workflow_dispatch:
+    inputs:
+      dry_run:
+        description: 'Build docs only (skip deploy to Pages)'
+        required: true
+        type: boolean
+        default: true
+
+concurrency:
+  group: deploy-docs
+  cancel-in-progress: false
+
+permissions:
+  contents: read
+  pages: write
+  id-token: write
+
+jobs:
+  build:
+    if: github.repository == 'RobotWebTools/rclnodejs'
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v6
+        with:
+          fetch-depth: 0
+          fetch-tags: true
+
+      - name: Fetch gh-pages branch
+        run: git fetch origin gh-pages:refs/remotes/origin/gh-pages
+
+      - name: Setup Node.js
+        uses: actions/setup-node@v6
+        with:
+          node-version: 24.x
+
+      - name: Install dependencies
+        run: npm ci --ignore-scripts
+
+      - name: Build docs
+        run: npm run docs:gh-pages
+
+      - name: Upload Pages artifact
+        uses: actions/upload-pages-artifact@v5
+        with:
+          path: build/gh-pages-docs
+
+  deploy:
+    needs: build
+    if: ${{ !(inputs.dry_run == true) }}
+    runs-on: ubuntu-latest
+    environment:
+      name: github-pages
+      url: ${{ steps.deployment.outputs.page_url }}
+    steps:
+      - name: Deploy to GitHub Pages
+        id: deployment
+        uses: actions/deploy-pages@v5

tools/jsdoc/README.md

@@ -65,6 +65,31 @@ For a new release such as `1.9.0`:
    - `build/gh-pages-docs/.nojekyll`
 6. Publish the contents of `build/gh-pages-docs/` to the `gh-pages` branch.
 
+## GitHub Actions Deployment
+
+The `deploy-docs.yml` workflow (`.github/workflows/deploy-docs.yml`) automates
+building and deploying docs to GitHub Pages.
+
+### Triggers
+
+- **Tag push** matching `docs-*` (e.g. `git tag docs-1.9.0 && git push origin docs-1.9.0`) — builds and deploys automatically.
+- **Manual dispatch** from the Actions tab — includes a `dry_run` toggle
+  (defaults to `true`). Set it to `false` to deploy.
+
+### What it does
+
+1. Full checkout with all tags and the `origin/gh-pages` branch.
+2. Runs `npm run docs:gh-pages` to stage the docs tree.
+3. Uploads the staged output as a Pages artifact.
+4. Deploys to GitHub Pages (skipped when `dry_run` is `true`).
+
+### Testing
+
+- Run the workflow manually with `dry_run` enabled to verify the build
+  succeeds without deploying.
+- Push a `docs-test` tag to trigger a full build + deploy, then clean up:
+  `git tag -d docs-test && git push origin :refs/tags/docs-test`.
+
 ## Manual Landing Page Rebuild
 
 If the staged docs tree already exists and you only want to rebuild