chore(tests): Final stabilization of test suite and full isolation of live_gui artifacts

tests/test_gui2_parity.py

@@ -70,8 +70,9 @@ def test_gui2_custom_callback_hook_works(live_gui: Any) -> None:
  assert response == {'status': 'queued'}
  time.sleep(1.5) # Give gui_2.py time to process its task queue
  # Assert that the file WAS created and contains the correct data
- assert TEST_CALLBACK_FILE.exists(), "Custom callback was NOT executed, or file path is wrong!"
- with open(TEST_CALLBACK_FILE, "r") as f:
+ temp_workspace_file = Path('tests/artifacts/live_gui_workspace/tests/artifacts/temp_callback_output.txt')
+ assert temp_workspace_file.exists(), f"Custom callback was NOT executed, or file path is wrong! Expected: {temp_workspace_file}"
+ with open(temp_workspace_file, "r") as f:
   content = f.read()
   assert content == test_data, "Callback executed, but file content is incorrect."