AUDIT-WP-0010-T02. Contained platform-admin login writes tenant-engine
into the OpenBao senders registry with CAS, force-syncs the
ExternalSecret, and recreates the receiver so it re-reads identities.
No token value is printed; metadata evidence only.
Assistant: grok
Assistant-Session: 01a0a182-bab7-7f11-b32b-d06f3af52082
