jenkinsfile - watch screen test 7j escape

api/Jenkinsfile.ble_test

@@ -93,7 +93,7 @@ pipeline {
                                 # Tail the file and flush each line immediately
                                 tail -n +1 -f "/tmp/ble_test_\\${env.TEST_HASH}.log" |
                                     while IFS= read -r line; do
-                                        printf '%s\\n' "\\${line}"
+                                        echo \\$line
                                     done    
                             done
                             EOF