Regenerative Vegetable Production

How can a vegetable farm, either established or from the design stage, incorporate regenerative techniques? Laying out beds on a keyline pattern? Incorporate long term rotations with animals? Thanks.

Big question with multiple answers. You might want to check out this thread which has some suggestions.
Protecting and building the soil I think is the main thing, which implies consideration of water and Nitrogen management. Generally minimal tillage and maximising biomass return; not importing nutrients. I suggest that Helen Atthowe's book the Ecological Farm would probably be a big help for you.

I would expect that they would have to move to a perennial vegetable system.

To me the first step to a regenerative vegetable production would be to set up a composting system.

Next would be sourcing material for the compost system such as wood chips and leaves.

Mushrooms can be incorporated into a regenerative vegetable production and mushrooms are a valuable high cash crop.

Now teach workers how to use these systems using compost tea and mulch.

Disturb the soil as little as possible. Use cover crops. Replace organic matter that leaves the farm in the form of produce with organic matter you import. Incorporate trees and possibly animals. Use no *cides. Grow in a polyculture.

Keeping living roots growing in the soil all year by cover cropping, companion planting, and growing perennials.

Companion planting with plants that feed the soil - I plant buckwheat or vetch between plants, these crops come up, protect the soil, suppress weeds, and when the main crop needs the space, I can just slash these crops down and they feed the soil and provide mulch.

Not growing large blocks of just one thing.

Pathways planted to white clover, which can be cut and fed to the nearest bed (or just left on the soil).