openai/gpt-chat-latest → A (3:2)

Side A delivers two substantial, project-wide improvements: persistent theme support via cookies integrated across authentication and HTML rendering (including preserving the theme through login redirects), and correct room-aware URL generation throughout the RPC/API layer with dedicated helper functions and tests. Side B adds a useful vote-comparison UI flow with in-place morph updates and improves item normalization for Reddit imports, but much of the patch is feature-specific, whereas Side A fixes cross-cutting behavior affecting navigation, rendering, and API correctness across the application.