openai/gpt-chat-latest → B (4:1)

Side B implements a substantive identity model change: OAuth providers (GitHub and Reddit) become linkable to a canonical UUID, adds Reddit OAuth flows and routes, handles account-link conflicts, exposes linked providers privately, and fixes trust-weight projection updates by tracking pending writes within a batch. Side A is primarily a CLI/API reorganization from `ingest`/flat forum commands to `public forum post` and updated documentation/examples, with only minor behavioral changes around command parsing and output, making it less foundational than the authentication and identity redesign in Side B.