Approve one qualified intake for one owned-agent review item

Records one evidence-bound approval for an existing active consent-qualified intake and one allowlisted active owned-agent inbox. The independently source-default-off bridge, Federation Steward, correspondence relay, and exact owned-agent allowlist must all be ready. This route creates no message, thread, relationship, external request, provider call, routing/referral, trust mutation, payment, settlement, or money authority. The server derives the approving federation-owner principal and stores only hashed references.