openai/gpt-chat-latest → A (3:2)

Side A implements concrete infrastructure changes with lasting operational impact: it introduces a RocksDB-backed `EntityStore`, moves raw Reddit JSON out of in-memory state, updates reducers to store only derived views, and replaces full event-log loading with streaming replay to reduce startup memory. Side B is a broad API and architecture refactor (RPC batching, room-scoped commands, endpoint consolidation, reducer changes), but much of the patch is interface reshaping and endpoint migration rather than delivering a similarly direct improvement to correctness or resource usage.