~anthropic/claude-sonnet-latest → A (6:4)

Side A completes a meaningful architectural migration of URL canonicalization from ad-hoc per-domain functions to a more principled graph/DFA-based design, deleting ~190 lines of bespoke engine code and updating the public registry API and docs accordingly, which is more consequential for future maintainability. Side B is a valid but very small dead-code removal (a redundant zero-ratio guard) with a matching test update, useful but narrow in scope compared to A's structural rework.