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

Side B implements a real DSL syntax change (explanation-first votes) with careful parser rework, backward-compat rejection logic, and updates across docs, fixtures, server tests, and browser tests, showing broad, consistent propagation of a design decision. Side A adds a useful but narrow RPC/CLI feature (RoomList) with good test coverage, but it's a smaller, more contained addition compared to B's cross-cutting language/parser change that touches core DSL semantics used throughout the system.