build: release action that generates the index file

.github/actions/prepare/action.yml

@@ -0,0 +1,14 @@
+name: Prepare
+
+description: Checkout and install dependencies
+
+runs:
+  using: composite
+  steps:
+    - uses: actions/setup-node@v4
+      with:
+        node-version: 22
+        registry-url: 'https://registry.npmjs.org'
+    - name: Install dependencies
+      shell: bash
+      run: npm ci

.github/workflows/release.yml

@@ -0,0 +1,29 @@
+name: Release
+
+on:
+  release:
+    types: [published]
+  workflow_dispatch:
+
+permissions:
+  contents: write
+
+jobs:
+  release:
+    runs-on: ubuntu-latest
+
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v4
+
+      - name: Prepare
+        uses: ./.github/actions/prepare
+
+      - name: Build
+        run: npm run build
+
+      - name: Release
+        uses: softprops/action-gh-release@v1
+        if: startsWith(github.ref, 'refs/tags/')
+        with:
+          files: ./dist/index.html