Phase A — Contract definition + policy-authoring workflow + example Verb Governance Spec

[hyperpolymath]

Weeks 1–2. Define the gateway↔BoJ contract; the Verb Governance Spec DSL authoring workflow; a worked example spec for BoJ's HTTP surface. No gateway/BoJ HTTP code changes yet. Source: ADR-0004 §phases, docs/integration/http-capability-gateway-plan.md, http-capability-gateway-audit.md. Repo: hyperpolymath/http-capability-gateway.

Parent: standards#91 (ADR-0004 phase A). Single-channel: do not work out of phase order; A→B→C→D→E.