feat: add GitHub Actions workflow for publishing to npm

Author: MattCCC

.github/workflows/publish.yml

@@ -0,0 +1,30 @@
+name: Publish to npm
+
+on:
+    release:
+        types: [published]
+    workflow_dispatch:
+
+permissions:
+    contents: read
+    id-token: write # Required for OIDC
+
+jobs:
+    publish:
+        runs-on: ubuntu-latest
+        steps:
+            - uses: actions/checkout@v4
+
+            - uses: actions/setup-node@v4
+              with:
+                  node-version: "24"
+                  registry-url: "https://registry.npmjs.org"
+
+            - name: Install dependencies
+              run: npm ci
+
+            - name: Build
+              run: npm run build
+
+            - name: Publish to npm
+              run: npm publish --provenance --access public