~x-ai/grok-latest → B (2:1)

B fixes a load-bearing production failure: when Reddit credentials exist it never falls back to www.reddit.com (blocked from cloud IPs), adds AuthRejected handling with forced token refresh/retry, and hardens OAuth error paths—directly keeping core fetch working. A adds a useful but thin RoomList vertical slice (grant filter + CLI + isolation tests) that expands the API without the same operational necessity.