~x-ai/grok-latest → A (3:2)

A permanently hardens core identity/API design: splits path vs identity modules, makes wire form naked (no @), optional delegate, and stops the reducer from rewriting principals/agents—contract and correctness across auth, ingest, feed, and types. B replaces a reddit stub with a real broker/OAuth/rate-limit fetch path, but that is an additive integration on browse/tree rather than a foundational domain fix.