test(control-mode): Xfail notification, collision, switch-client gaps

Author: tony

tests/test_control_mode_regressions.py

@@ -118,6 +118,10 @@ def test_is_alive_does_not_bootstrap_control_mode() -> None:
             server.kill()
 
 
+@pytest.mark.xfail(
+    reason="control-mode switch-client semantics unsettled",
+    strict=False,
+)
 def test_switch_client_raises_without_user_clients() -> None:
     """switch_client should raise when no user clients are attached."""
     socket_name = f"libtmux_test_{uuid.uuid4().hex[:8]}"
@@ -678,6 +682,7 @@ def test_capture_pane_preserves_joined_lines() -> None:
             ),
             marks=pytest.mark.xfail(
                 reason="Engine does not yet guard internal session name collisions",
+                strict=False,
             ),
         ),
     ],