Register a vet with VetHubRx (action "A") and store the verification URL.

Register a vet with the e-prescribing vendor. Practice address/phone are supplied explicitly (the DynamoDB clinic profile stores address as one free-text string, and the vendor's provider directory validates structured fields) — the UI prefills them from the clinic profile for the admin to confirm.

One provider row in the eRx roster: eligibility + registration + verification state.