Compatibility tests copied from the delivered SDK 0.6.0 source.
SDK product code is unchanged. The expected array operation count advances
from eight to twelve, and new template packages require profile 0.2. Other
assertions are unchanged. Run tests under a headless installed SDK environment
and tests_gui under a separate installed SDK GUI environment. Select the new
installed engine with PYCFORGE_TEST_ENGINE. Historical engine variables remain
required by the original compatibility checks. Engine code must not be installed
in either SDK environment. The recorded visual provenance remains SDK 0.6.0.
