Convergent deliberation loop：围绕一个主题反复进行打分，直到答案不再变化，并强制覆盖，确保没有任何单元被悄悄跳过。用于用户说“ponder ”（“ponder the UI”、“ponder our error handling”）、“think this over properly”、“keep thinking until it converges”、“keep looping until it converges”、“loop on this until it stops changing”、“go throug
