RoyPrinsGH/Mathoku

AI Summary: The task is to select and implement a suitable menu system for a cross-platform (Windows and Unix) application. The menu system must support single and multi-select options, arrow key and spacebar navigation, execute a function based on user selection, and ideally have built-in runners. Several options are being considered, including using existing libraries (with potential modifications) or building a custom solution. The goal is to find a balance between functionality, ease of implementation, and maintainability.