fix: Jenkins node20

Jenkinsfile

@@ -1,17 +1,18 @@
 pipeline {
   agent any
-  tools { nodejs 'node20' }
+  tools { nodejs 'node20' }     // Name genau wie in Tools
+
   stages {
-    stage('Checkout') {
-      steps { checkout scm }
+    stage('Check versions') {
+      steps { sh 'node -v && npm -v' }
     }
     stage('Install dependencies') {
       steps { sh 'npm ci' }
     }
     stage('Playwright tests') {
       steps {
-        // Installiert Browser & Systemdeps falls nötig
-        sh 'npx playwright install --with-deps'
+        // Dependencies installieren (falls fehlende Systemlibs meckern, sagen wir Bescheid)
+        sh 'npx playwright install'
         sh 'npx playwright test'
       }
     }