show

Loads the IDE's FXML view onto stage, installs a fresh TuPrologIDEController wired to it, applies title/icon/stylesheets/onClose/onAbout, adds every customTabs entry (see TuPrologIDEController.addTab), loads every customLibraries entry into the controller's TuPrologIDEModel (see TuPrologIDEModel.customizeSolver), runs each CustomTab's ModelConfigurator, and finally shows stage.

This is the terminal operation of the builder: call it once all the desired fluent setters have been applied.