Cranberry Beans, probably any beans; medium-term storage options?
My recommendation would be to shell and wash the beans, blanch for 3-4 minutes then quickly plunge in an ice bath, drain and pat dry, and seal in a freezer bag (squeezing out as much excess air as possible). 

I have done this with fresh green beans by cutting into 1-inch pieces and they lasted 3 months in the freezer with no problem. I realize cranberry beans are quite different, but I think the same method would apply and work well. I would think the cranberry beans would be less temperamental than regular green beans. 

As an aside, I have similar plans and this is how I am going to try to store them long-term.