~x-ai/grok-latest → B (1:5)

B fixes real product behavior: attribution via out-of-band delegate_opt instead of embedding WEB_BROWSER_AGENT in DSL text, stopping the bad all-items fallback when the sibling pool is < 2, removing the pointless swap control, and renaming the route. A is almost entirely clippy/style churn plus wiring a missing #[test] and allow(dead_code), which is useful hygiene but far less lasting design value.