DCQL: claim value matching (restricted postal codes)

Scenario

A delivery service requests the holder's residential address credential but accepts it only when postal_code is in its allowed delivery zones. The values array on a claim query makes the wallet match the claim VALUE, not just its presence.

Before you build: run the integrator intake in igrantio-ows-overview - environment, API key, tenancy, backend host, webhooks, frontend - one question at a time, a recommended default with each.