What is the equivalent of fsck / scandsk / chkdsk / Disk First Aid for Lisa Office System, and how do I run it?
You need to boot off Disk 1 of the Lisa Office System install disk set, and click on the repair button. The same is true for Workshop, but you should boot off Disk 1 of the Workshop install set instead. If you want to repair a floppy, you can do so without rebooting by clicking on the floppy, then use the Housekeeping repair microdisk menu option.