v0.22.3

改进：写明 WorkBuddy 会认出 dsh 发出的对话并拦下（国内版、国际版都是）：「最近失败」的建议不再推荐改用国内版；「测一下」WorkBuddy 的模型会注明"只是一句短测试"；来源行和 README 加了提醒。

Change: say plainly that WorkBuddy blocks conversations sent by dsh (China and international): recent-failure advice no longer suggests WorkBuddy China, a Test on a WorkBuddy model notes it is only a short test, and the source rows and README carry the warning.