openai/gpt-5.2-chat → B (3:1)

Side B removes a 1,400+ line monolithic `server/src/html/forum.rs` and replaces it with a properly structured `forum/` module tree (e.g., `mod.rs`, `feed.rs`, `views.rs`, `thread_morph.rs`), resolving module ambiguity and establishing a clear, maintainable architecture. Side A mainly reshapes the CLI surface (renaming `ingest` to `forum post`, reorganizing subcommands, and updating docs/tests) without fundamentally changing core logic. The architectural cleanup and elimination of duplicate module roots in B provides more lasting structural value.