~x-ai/grok-latest → A (2:1)

Side A lands a concrete RouteContext abstraction plus a precise, phased design for ItemId vs routing that targets core types and call sites; that is durable architectural leverage. Side B’s huge diff is mostly relocating the legacy reddit graph parser and wiring a demo UI around it (move + glue + tests), which is real product surface but lower lasting structural value per line than A’s design work.