~x-ai/grok-latest → B (1:3)

B fixes a real production failure path in reddit.rs: it stops falling back to the public www.reddit.com API when OAuth creds exist, retries on 401/403 with forced token refresh, and surfaces AuthRejected cleanly—plus a small fly.toml pin. A only adds peripheral Open WebUI deploy scaffolding (README + fly.toml), which is useful docs/config but not core correctness.