Auto-recalculation after parameter change in settings dialog

When changing parameters in the settings dialog, recalculation should automatically trigger after a short inactivity delay (e.g., 2 seconds after the last input, via a debounce timer). This would avoid the current situation where recalculation often only starts after clicking another field. If this is not feasible, the UI should at least provide a visual indicator (e.g., background color) showing whether the latest input change is already being processed.