openai/gpt-chat-latest → A (3:2)

Side A introduces a durable identity model where UUIDs become the canonical account identity and OAuth providers are linkable rather than identities themselves, adds Reddit OAuth support alongside GitHub, handles account-link conflicts, and fixes projection batching so multiple OAuth link events correctly accumulate trust weight within one batch. Side B contains a real bug fix for the external garden index and improves GitHub resolver rendering with rich import cards and modularization, but those changes are more feature/UI focused than the foundational authentication and identity redesign in Side A.