ci: minimal Node pipeline (install + prettier check)

Author: rluetken-dev

.github/workflows/ci.yml

@@ -1,23 +1,22 @@
 name: CI
-
 on:
   push:
-    branches: [main]
-    tags: ['v*']
+    branches: [ main ]
   pull_request:
-    branches: [main]
-
+    branches: [ main ]
+concurrency:
+  group: ci-${{ github.ref }}
+  cancel-in-progress: true
 jobs:
-  lint-format:
+  ci:
     runs-on: ubuntu-latest
     steps:
       - uses: actions/checkout@v4
       - uses: actions/setup-node@v4
         with:
           node-version: '20'
           cache: 'npm'
-      - run: npm ci
-      # Fail on ESLint warnings (optional: we recommend it for Sauberkeit)
-      - run: npm run lint -- --max-warnings=0
-      # Check formatting (no writes)
-      - run: npm run format:check
+      - name: Install
+        run: npm ci
+      - name: Format (Prettier)
+        run: npm run format:check || npx prettier --check .