- Track file path after save/load so Save doesn't prompt again - Add Save As (Ctrl+Shift+S) to always prompt for location - Update window title to show current filename - Generate incremental default filenames (CutList_1.json, etc.) - Add keyboard shortcuts: Ctrl+S (Save), Ctrl+O (Open), Ctrl+N (New) - Enter key in items grid moves to Length column on next row Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>