openai/gpt-5.2-chat → A (3:1)

Side A introduces a substantial architectural change: removing the demo counter feature and adding a new asynchronous settlement worker with batching, cached ranking computation, startup cache warming, API/state refactors, and corresponding test updates. This meaningfully impacts core state management, performance, and concurrency. Side B improves DSL parsing and linkification with deterministic block masking, prose tokenization, stricter parsing rules, and solid tests—valuable but more localized to parsing/rendering. Overall, Side A delivers broader systemic impact.