openai/gpt-chat-latest → B (5:2)

Side B adds a substantial, durable identity architecture: it introduces Reddit OAuth alongside GitHub, changes authentication so OAuth providers link to a canonical UUID, adds conflict handling, provider-link persistence, private linked-provider views, new routes, projection/storage updates, and trust-weight fixes. Side A simplifies the UI by replacing a fragile autocomplete parser with a paste-and-go flow and removes a large amount of parser complexity, but it also drops interactive parsing functionality in favor of a narrower URL extractor, making it a more localized UX simplification than the foundational authentication and identity work in Side B.