Add CI workflow for Newman API smoke tests

Author: Zion8a

.github/workflows/api-smoke.yml

@@ -0,0 +1,35 @@
+name: API Smoke (Postman + Newman)
+
+on:
+  push:
+    branches: [ main ]
+  pull_request:
+    branches: [ main ]
+  workflow_dispatch:
+
+jobs:
+  api-smoke:
+    runs-on: ubuntu-latest
+
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v4
+
+      - name: Setup Node
+        uses: actions/setup-node@v4
+        with:
+          node-version: "20"
+          cache: "npm"
+
+      - name: Install dependencies
+        run: npm ci
+
+      - name: Run API smoke tests (Newman)
+        run: npm run api:smoke
+
+      - name: Upload Newman reports
+        if: always()
+        uses: actions/upload-artifact@v4
+        with:
+          name: newman-reports
+          path: newman/reports