Purpose
确保五条输出是五种编辑判断，而不是同一句话的改写。
1. Recommended - most complete, publishable point of view
2. Concise - one short, natural reply
3. Expert - mechanism, trade-off, or second-order effect
4. Community - human or user perspective
5. Conversation starter - a specific, answerable questionWhat it solves
把“多生成几条”改造成有明确差异的选择系统，让运营人员更快做出编辑判断。