~x-ai/grok-latest → A (2:1)

A threads CanonicalItemUrl through resolve_item, validate, pair selection, and rank-change maps while adding Deref on the href newtypes, removing repeated String↔canonical wrapping across production API paths. B only repairs test OAuth mocks (request body API, split regex, null state/token, redirect length) and selector helpers so Playwright login works again—necessary but localized to test support rather than core domain types.