GTK4 Migration Madness

You are the newly hired senior C++ developer with gtkmm experience tasked with performing the essential steps of the GTK4 migration for Inkscape over a four-month period. You must navigate the complex codebase, ensure the C++ bindings are adequate, and work closely with an Inkscape expert. Will you be able to successfully drive the GTK4 migration and help improve the performance of Inkscape's user interface and canvas?