Rob's code to adapt to Nathan's formats based on Nimesha's code

[RobertLRead]

Dear @NimeshaKahingala,

I THINK I created this branch from your branch. On Sunday, James and I with worked with Nathan together on this, and with Nathan's help I got it working, accomplishing two things:

1. I now have NOT hard-wired the cookie recipe (so taht we are matching against an arbitrary OKH), and
2. I made the GUI (and the back-end summary code) able to handle either the "old" OKH format which we used or the "new" OKH format which Nathan has created in the last 2 months. (This was done with the typescript nullarity operator "??".

I beileve this should be merged to main immediately, but James and I want you to review it by Thursday and to merge it on Thursday. (If you don't get back to us, we will likely merge on Sunday.)

[Jbutler-helpful]

@NimeshaKahingala any thoughts about this approach?