feat: initial otko import

tests/gui/test_main_window.py

@@ -0,0 +1,22 @@
+"""Smoke test for the MainWindow.
+
+Marked as ``gui`` so it can be deselected on environments without a display.
+"""
+
+from __future__ import annotations
+
+import pytest
+
+pytest.importorskip("PySide6")
+pytest.importorskip("pyvistaqt")
+
+
+@pytest.mark.gui
+def test_main_window_opens(qtbot) -> None:  # type: ignore[no-untyped-def]
+    from otko.views.main_window import MainWindow
+
+    window = MainWindow()
+    qtbot.addWidget(window)
+    window.show()
+    assert window.isVisible()
+    assert window.windowTitle() == "OTKO"