~x-ai/grok-latest → A (2:1)

A permanently separates path vs identity concerns, makes wire/storage identities strict and naked (rejecting `@`), optional delegates, and stops the reducer from rewriting usernames/agents—core event-model correctness across auth, ingest, APIs, and HTML display. B is a real, tightly scoped production fix (mandatory OAuth when creds exist, 401/403 refresh, no public www fallback, fly base URL), but it only touches the Reddit worker path versus A’s lasting domain contract.