BFF relays and API clients for the personality editor — seven relays (charter catalog, affected SI members, the organization charter, archetypes and one archetype, the personality preview and approved prose) keep each upstream path, verb, body and refusal; personalityApi and PersonalityApiError read reason, field, code, match, usage, problems, requiredRight and index; charterApi gains orgCharter and saveOrgCharter (KamoCollab CP09 Task 10)