Fix stuff, apply ruff rules.

tests/test_focus_manager_compat.py

@@ -0,0 +1,33 @@
+"""Regression tests for focus manager API compatibility."""
+
+from __future__ import annotations
+
+import pytest
+
+from cthulhu import focus_manager
+
+
+@pytest.mark.unit
+def test_is_in_preferences_window_tracks_cthulhu_active_window(monkeypatch):
+    manager = focus_manager.FocusManager.__new__(focus_manager.FocusManager)
+    window = object()
+    app = object()
+    manager._window = window
+
+    monkeypatch.setattr(focus_manager.AXObject, "get_application", lambda obj: app)
+    monkeypatch.setattr(focus_manager.AXObject, "get_name", lambda obj: "Cthulhu")
+
+    assert manager.is_in_preferences_window() is True
+
+
+@pytest.mark.unit
+def test_is_in_preferences_window_is_false_for_non_cthulhu_window(monkeypatch):
+    manager = focus_manager.FocusManager.__new__(focus_manager.FocusManager)
+    window = object()
+    app = object()
+    manager._window = window
+
+    monkeypatch.setattr(focus_manager.AXObject, "get_application", lambda obj: app)
+    monkeypatch.setattr(focus_manager.AXObject, "get_name", lambda obj: "Terminal")
+
+    assert manager.is_in_preferences_window() is False