openai/gpt-chat-latest → A (3:2)

Side A adds substantial new project capabilities: an end-to-end invite system (minting, redemption through OAuth, room audit RPCs, CLI support, state management, routing, and integration tests), plus thread timeline support with system events. Side B improves URL normalization and introduces an extensible GitHub external resolver with UI integration, but a significant portion is refactoring/formatting and incremental UI work, whereas Side A delivers a broader core access-control feature with concrete server, client, API, and test coverage.