Merge pull request #263 from postmanlabs/feature/npm-release

feat: add npm release action

Author: VShingala

.github/workflows/pkg-release.yml

@@ -0,0 +1,42 @@
+name: Package Release
+
+on:
+  push:
+    tags:
+      - 'v*.*.*'
+  workflow_dispatch:
+    inputs:
+      tag:
+        description: 'Tag to publish (e.g. v1.2.3)'
+        required: true
+        type: string
+
+# OIDC trusted publishing — no NPM token needed
+permissions:
+  contents: read
+  id-token: write
+
+jobs:
+  npm-publish:
+    name: Publish to npm
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout (the tag being released)
+        uses: actions/checkout@v4
+        with:
+          ref: ${{ github.ref_type == 'tag' && github.ref_name || inputs.tag }}
+
+      - name: Set up Node.js
+        uses: actions/setup-node@v4
+        with:
+          node-version: '22'
+          registry-url: 'https://registry.npmjs.org'
+
+      - name: Upgrade npm for OIDC trusted publishing (needs npm >= 11.5.1)
+        run: npm install -g npm@latest
+
+      - name: Install dependencies
+        run: npm ci
+
+      - name: Publish to npm
+        run: npm publish   # authenticates via OIDC; provenance added automatically