vta-webvh

WebVH hosting infrastructure for the VTA, extracted from vta-service so the did:webvh DID-lifecycle subsystem and its other consumers can depend on it without pulling in the whole service.

• webvh_store — the local did:webvh DID-record + server-record store (fjall webvh keyspace).
• webvh_client — the HTTP client to a remote did:webvh hosting server.
• webvh_auth — the DID-auth handshake the client uses against that host.

Each depends only on vti-common, vta-keyspaces, vta-sdk, and affinidi-tdk. vta-service re-exports each as crate::<module> (behind its webvh feature), so existing call sites are unchanged.

Part of the Verifiable Trust Infrastructure workspace. Apache-2.0.