Preparing news brief
I'm not going to run any shell commands or edit files. I’ll focus on putting together a short news brief with a title and keep it between 80-120 words. The guidelines say no heavy formatting unless requested, but I can use bullets. I think I’ll include a one-sentence summary along with some implications, and then I'll ask the user what they’d like me to do next. Let’s get started!
看到了这条：据国内媒体报道，徐正源已与成都蓉城正式解约，且不会执教北京国安。
要点与影响
- 蓉城：主帅位置空缺，冬训与引援节奏、技战术延续性将受影响；短期多由执行主教练/助教过渡。
- 国安：此前“徐正源赴任”的传闻基本告破，需另寻目标或加速与现有候选人谈判。
- 教练市场：中超冬窗主帅流动加剧，外教/本土教练人选博弈会更明显。
- 舆情：蓉城需尽快给出继任与球队规划，稳定军心；国安需要对外澄清或发布进展。
需要我帮你哪种输出？
- 快讯/通告稿（适合发朋友圈/社媒） 
- 两队潜在主帅候选与优劣盘点
- 对蓉城/国安战术与阵容影响简评
- 事件时间线与公开信息汇总（不含实时查证）