jenkinsfile - watch screen test 7 intern again

api/Jenkinsfile.ble_test

@@ -78,15 +78,23 @@ pipeline {
             }
         }
         
+                        //while screen -list | grep -q ble_test_${env.TEST_HASH}; do
+                        //    tail -f /tmp/ble_test_${env.TEST_HASH}.log
+                        //done   
         stage('View Test Logs'){
             steps {
                 sshagent([env.SSH_CREDENTIALS_ID]) {
                     sh """
                     ssh -o StrictHostKeyChecking=no root@${params.host_ip} -o ServerAliveInterval=60 -o ServerAliveCountMax=120 << EOF
-                        while screen -list | grep -q ble_test_${env.TEST_HASH}; do
-                            tail -f /tmp/ble_test_${env.TEST_HASH}.log
-                        done    
 
+                        set -euo pipefail
+                        # Outer loop - runs as long as the screen session is alive
+                        while screen -list | grep -q "ble_test_${TEST_HASH}"; do
+                            # `tail -f` streams the file; the read-loop ensures line-by-line flush
+                            tail -n +1 -f /tmp/ble_test_${env.TEST_HASH}.log | while IFS= read -r line; do
+                                echo "\$line"
+                            done
+                        done
                     """
                 }
             }
@@ -94,7 +102,7 @@ pipeline {
     }
 
     // ---------------------------------------------------------------------
-    // Post‑build cleanup - kill the remote screen session
+    // Post-build cleanup - kill the remote screen session
     // ---------------------------------------------------------------------
      post {
          always {