openai/gpt-5.3-chat → A (6:4)

Side A introduces a substantial architectural change: removing the demo counter feature, adding an asynchronous settlement worker with batching, decoupling write/read access to shared state, and introducing cached ranking computation. This affects core request handling, persistence, and performance characteristics across the system. Side B is also significant, with improved DSL parsing, tokenization, and linkification plus strong test coverage, but it is more localized to parsing and rendering logic. Overall, A has broader system-level impact.