Stabilize Jupyter terminal wrapper execution

tests/test_jupyter_runtime.py

@@ -3,6 +3,7 @@ from __future__ import annotations
 import unittest
 
 from src.jupyter_runtime import (
+    build_terminal_script_launcher,
     clean_terminal_output,
     extract_terminal_command_output,
 )
@@ -43,6 +44,28 @@ class TestJupyterRuntimeOutputFiltering(unittest.TestCase):
 
         self.assertEqual(cleaned, 'real-output')
 
+    def test_clean_terminal_output_drops_continuation_prompt(self) -> None:
+        cleaned = clean_terminal_output('real-output\r\n# >\r\n')
+
+        self.assertEqual(cleaned, 'real-output')
+
+    def test_terminal_script_launcher_hides_complex_wrapper_from_shell(self) -> None:
+        launcher = build_terminal_script_launcher(
+            script_path='/workspace/scratchpad/.run_scripts/run.sh',
+            marker='__ZK_AGENT_EXIT_test__',
+        )
+
+        self.assertNotIn('setsid bash -lc', launcher)
+        self.assertEqual(
+            launcher,
+            'bash /workspace/scratchpad/.run_scripts/run.sh; '
+            '__zk_outer_status=$?; '
+            'rm -f /workspace/scratchpad/.run_scripts/run.sh; '
+            'if [ "$__zk_outer_status" -ne 0 ]; then '
+            'printf "\\n__ZK_AGENT_EXIT_test__:%s\\n" "$__zk_outer_status"; '
+            'fi',
+        )
+
 
 if __name__ == '__main__':
     unittest.main()