I assume that eventually there will be something like two different kinds of lists:
our private inventory of things we HAVE,
vs.
multiple lists, one for each swap we're in at the moment, of seeds we OFFERED to that swap.
For example, I found I have nine small pkts of 'Valmaine' lettuce (Romaine type), but want to offer 5 pkts in this swap. Eventually I hope will have one list (or one view) where I can record
"HAVE 9 total", or maybe "HAVE 2 REMAINING" and
"OFFERED 5 TO BETA SWAP" and
"OFFERED 2 TO DND's SWAP"