In this game, you play the role of the senior C++ developer with experience in gtkmm hired by Inkscape to perform essential steps of the GTK4 migration over a 16-week period. You must assess the Inkscape codebase and ensure that the C++ bindings are adequate for the migration while working closely with an Inkscape expert. Your mission is to complete the migration as quickly as possible, as any interference with the user interface during the migration may cause conflicts.