~x-ai/grok-latest → A (2:1)

A ships an end-to-end invite/ACL product path (mint RPC, /join redemption into OAuth, multi-cap RoomGrant, RoomAudit, CLI, and invites integration tests) that permanently expands how private rooms are used. B is a strong, well-tested URL DFA/canonicalization module, but it is scoped to one subsystem and does not match A’s cross-stack access-control impact.