As a senior developer with expert knowledge of GTK4/gtkmm4, you are tasked with saving the Inkscape project from a potential code crash. Your mission is to enter the Inkscape codebase and work with the Inkscape expert to migrate to a newer GUI framework version. But be careful, as rival developers seek to sabotage the project and crash the entire system. You must battle against the clock and these code crashers to ensure a successful migration.