feat(gui): Rename Context Hub to Project Settings

- gui_2.py: Window title changed to 'Project Settings'
- app_controller.py: show_windows key updated
- Updated tests to reference new name

tests/test_layout_reorganization.py

@@ -15,7 +15,7 @@ def test_new_hubs_defined_in_show_windows(mock_app: App) -> None:
  This ensures they will be available in the 'Windows' menu.
  """
  expected_hubs = [
-  "Context Hub",
+  "Project Settings",
   "AI Settings",
   "Discussion Hub",
   "Operations Hub",
@@ -53,7 +53,7 @@ def test_hub_windows_exist_in_gui2(app_instance_simple: Any) -> None:
  """
  Verifies that the new Hub windows are present in the show_windows dictionary.
  """
- hubs = ["Context Hub", "AI Settings", "Discussion Hub", "Operations Hub"]
+ hubs = ["Project Settings", "AI Settings", "Discussion Hub", "Operations Hub"]
  for hub in hubs:
   assert hub in app_instance_simple.show_windows