~anthropic/claude-sonnet-latest → A (6:4)

Side A delivers substantial new functionality—cookie-based web sessions, a unified web posting handler, and full room-scoped thread routing/views—wiring the room UI into a real, working feature despite the noisy unrelated plan2.md file. Side B is a narrower, well-tested refinement (fullscreen vote-compare layout, vote sorting, preview morph) that improves UX polish but has much smaller architectural scope and lasting impact than A's session/room infrastructure.