test: align CLI help checks with bounded output

test/test_touch_debug_cli.py

@@ -159,7 +159,8 @@ int main() {
         self.assertIn("handleLocalControlCommand(command, reply, reply_capacity)", handler)
         terminal = extract_braced(mesh, "void MyMesh::handleTerminalCommand(")
         self.assertIn("handleLocalControlCommand(command, local_reply, sizeof(local_reply))", terminal)
-        self.assertIn('get display.touch\\r\\n', terminal)
+        help_body = extract_braced(terminal, 'else if (strcmp(command, "help") == 0)')
+        self.assertIn('get/set display.touch <on|off> (this boot)\\r\\n', help_body)
         # No persistent preference schema or write is involved.
         setter = extract_braced(local, 'if (strncmp(command, "set display.touch", 17) == 0')
         self.assertNotIn("savePrefs", setter)