openai/gpt-chat-latest → A (9:1)

Side A introduces a substantial architectural change: it consolidates many REST endpoints into a batch RPC interface, adds room-scoped commands and data models (room/thread separation), updates the CLI to use the new RPC layer, and refactors validation and reducer/event handling to support room-aware behavior. Side B fixes a real Reddit import bug by attaching imported children directly under the subreddit and improving unranked labels with tree metadata, but its impact is localized compared with A's lasting API and data-model redesign.