openai/gpt-chat-latest → A (4:1)

Side A delivers a substantial identity-system redesign: it makes UUIDs the canonical account identity, adds Reddit OAuth alongside GitHub, supports linking multiple providers to one account with conflict handling, exposes linked providers privately, updates routing and storage, and fixes trust-weight projection so multiple OAuth link events are applied correctly within a batch. Side B improves the DSL and HTML by tokenizing prose item references, preventing linkification inside code fences, requiring braced item bodies, and adding URL-link support, but these are narrower parsing and rendering enhancements compared with the lasting architectural and authentication capabilities introduced by Side A.