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

Commit A implements a substantial, coherent feature (server-rendered theme selection replacing client-only JS theme switching, with cookie persistence, proper redirect/session cookie propagation, and room-aware wire URL helpers with dedicated unit tests) touching many call sites correctly. Commit B is a smaller UX polish (vote counts on garden rows, HUD unpin-via-form instead of link) plus one doc tweak and a browser test update, which is useful but narrower in scope and lasting impact than A's structural change to theming and API URL handling.