- Added 20-page signature support to calculation algorithm and GUI.
- Implemented settings.json to persist language preference across sessions.
- Added automatic distribution logic for blank pages (padding):
splits the pad between start and end pages symmetrically. - Updated terminology: changed 'booklet' to 'signature' and 'courtesy' to 'blank pages' for better industry accuracy.
- Refactored GUI layout for improved usability.
thanks to the comments of u/LucVolders and u/brigitvanloggem on Reddit.