feat: build script for manual release flows

.github/workflows/build.yml

@@ -0,0 +1,82 @@
+name: Build and Deploy
+run-name: ${{ github.actor }} started build action
+on:
+  push:
+    branches:
+      - main
+    tags:
+      - 'v*.*.*'
+  pull_request:
+    branches:
+      - main
+
+  # Allows to run this workflow manually from the Actions tab
+  workflow_dispatch:
+
+# Allow only one concurrent deployment, skipping runs queued between the run in-progress and latest queued.
+# However, do NOT cancel in-progress runs as we want to allow these production deployments to complete.
+concurrency:
+  group: '${{ github.workflow }}-${{ github.ref }}'
+  cancel-in-progress: true
+
+jobs:
+  build:
+    runs-on: ubuntu-latest
+
+    steps:
+      - name: Checkout repository
+        uses: actions/checkout@v4
+
+      - name: Setup Node.js
+        uses: actions/setup-node@v4
+        with:
+          node-version: 20
+          cache: 'npm'
+
+      - name: Install dependencies
+        run: npm ci
+
+      - name: Build for all browsers
+        run: npm run build
+
+      - name: Upload Chrome extension artifact
+        uses: actions/upload-artifact@v4
+        with:
+          name: chrome-extension
+          path: extension/chrome.zip
+
+      - name: Upload Firefox extension artifact
+        uses: actions/upload-artifact@v4
+        with:
+          name: firefox-extension
+          path: extension/firefox.xpi
+
+  deploy:
+    needs: build
+    runs-on: ubuntu-latest
+    # Only deploy when a tag is pushed (e.g., v1.0.0)
+    if: startsWith(github.ref, 'refs/tags/v')
+
+    steps:
+      - name: Checkout repository
+        uses: actions/checkout@v4
+
+      - name: Setup Node.js
+        uses: actions/setup-node@v4
+        with:
+          node-version: 20
+          cache: 'npm'
+
+      - name: Install dependencies
+        run: npm ci
+
+      - name: Build for all browsers
+        run: npm run build
+
+      - name: Deploy to extension branch
+        uses: peaceiris/actions-gh-pages@v4
+        with:
+          github_token: ${{ secrets.GITHUB_TOKEN }}
+          publish_dir: ./extension
+          publish_branch: extension
+          keep_files: false