~anthropic/claude-sonnet-latest → B (97:3)

Side A is a trivial one-line DOM reorder (moving the errors div), whereas Side B performs a substantial, load-bearing refactor: it removes CanonicalItemUrl entirely in favor of a structural ItemId enum, splits wire normalization into a new item_wire module to avoid cycles, updates the reducer, ranking, RPC, and HTML layers consistently, and updates/extends the test suite accordingly. Side B is riskier but represents real architectural progress toward the stated ItemId/RouteContext migration goal, while Side A contributes negligible lasting value.