JabRef offers functionality to clean up entries - https://docs.jabref.org/finding-sorting-and-cleaning-entries/cleanupentries

The dialog consists of thee parts:

1. "Multi-field clean ups"
2. "File-related clean ups"
3. "Single-field cleen ups"

Task:

Introduce three tabs in the "Clean up entries" dialog

• "Single field"
• "File-realted"
• "Multi-field"

Have each tab buttons

• "Apply" to apply the selected formatters
• "Close" to close the window

The just apply the selected actions of the current tab

If possible, one could think about undo/redo in the dialog itself - as in the "Automatic field editor", but I think, this is too complex for users. Normal undo/redo of JabRef should do