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

Side A implements substantial, working functionality: cookie-based web session auth, a full web posting flow, and room-scoped thread views/navigation wired into real routes, which restores/expands actual product surface area. Side B fixes a genuine RwLock deadlock bug and adds useful test hardening (timeouts, log-file redirection), which is valuable but narrower in scope; A's changes deliver more lasting end-user-facing capability despite including an odd unrelated plan2.md file.