openai/gpt-chat-latest → A (3:2)

Side A removes the duplicate `server/src/html/forum.rs` monolithic module and establishes `forum/mod.rs` as the single module root, with code split into focused files such as `feed.rs`, `views.rs`, `thread_morph.rs`, and `page.rs`. This resolves module ambiguity while preserving functionality and leaves a cleaner, maintainable module structure; Side B is a useful maintenance improvement that replaces hand-enumerated Kaocha test namespaces with an auto-discovered `^test\..+` suite, but it affects test configuration rather than the application's architecture.