openai/gpt-chat-latest → A (4:1)

Side A adds a substantial new offline capability: a reusable server `offline` module plus a new `sorterc` workspace binary that compiles `.sorter` files, replays reducer state, scans `events.jsonl` for corrupt or malformed ingests, includes tests, and documents the workflow. Side B is primarily a type-safety refactor that replaces `String` paths with canonical URL newtypes and `Deref` implementations across existing code, improving clarity and reducing conversions but largely preserving existing behavior rather than adding new project functionality.