Automatically assess task complexity and adjust reasoning level. Triggers on every user message to evaluate whether extended thinking (reasoning mode) would improve response quality. Use this as a pre-processing step before answering complex questions.

自动评估任务复杂度并调整推理层级。在每条用户消息触发时，评估是否启用扩展思考（推理模式）以提升回答质量。在回答复杂问题前作为预处理步骤使用。