AdapterRegistry now backs the EMAIL channel with the email-native EmailAdapter
(RFC threading) instead of the generic WebhookAdapter. Adds EmailProvider — an
email-envelope egress provider ({to,subject,text,html,inReplyTo}) registered for
EMAIL when IIOS_PROVIDER_URL_EMAIL is set (sandbox stays the default). Spec:
signed email → normalized interaction on the email thread; a reply joins the
same thread (one conversation); bad signature → rejected (fail-closed).
Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
Task S2.1: the broker now checks consent (cmp.checkPurpose) after the OPA gate +
obligations and before the provider — a DENY blocks the send (BLOCKED/CONSENT_DENIED,
provider never called); ALLOW/NOT_REQUIRED proceed, ALLOW carrying the consent
receipt. Contracts gain CapabilityRequest.purpose + CapabilityResult.consentReceiptRef.
FakeCmp is now purpose-aware (denyPurpose/allowOnly). 5 new tests: allow+receipt,
deny→blocked, not-required, purpose-aware, OPA-before-CMP.
Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
Task 9.4: certifyProvider runs the P9 conformance checklist a provider must pass
before backing a channel — declares explicit capabilities, returns providerRef +
recognized outcome (never throws), repeatable/idempotent, tolerates empty payload.
2 tests: SandboxProvider passes; a throwing/no-capability provider fails with the
specific failing checks listed.
Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>