openai/gpt-chat-latest → A (3:2)

Side A introduces a substantive architectural change: entity fetching is converted from a fire-and-forget JS response into an SSE-based workflow with progress/completion events, coordinated via oneshot notifications from the Reddit worker, plus the necessary client-side stream handling and refactoring of fetch-related HTML into its own module. Side B adds a useful developer-only offline tool (`sorterc`) for compiling `.sorter` files and linting `events.jsonl`, but it primarily extends tooling rather than changing the runtime behavior of the application, so its long-term project impact is somewhat narrower.