openai/gpt-chat-latest → B (3:2)

Side B introduces a reusable offline tooling layer (`server::offline`) plus a new `sorterc` workspace binary that reuses the server's parser, validator, reducer, and ranking code to compile `.sorter` files and diagnose `events.jsonl`, with tests and documented CLI workflows. Side A adds a useful `/ui` endpoint, HTML UI action framework, JSON form templating, and refactors web-post handlers for reuse, but its impact is primarily on browser interaction, whereas Side B creates broadly reusable developer infrastructure for validation, replay, and diagnostics that is likely to provide longer-term maintenance value.