openai/gpt-chat-latest → B (4:1)

Side B introduces a concrete architectural abstraction (`RouteContext`) for centralized HTML route generation, re-exports it from the HTML module, and documents a coherent migration plan toward structured `ItemId` handling. Side A is much larger, but it mixes many unrelated additions with obvious accidental terminal transcript text embedded at the start/end of files such as `forms.rs` and `ranking.rs`, reducing the reliability and lasting value of the patch despite its scope.