Issue Description
明明百炼的token plan 里有 deepseek-v4pro-0813 和deepseek-v4flash-0730，但是在qoder 的自定义模型里添加之后，就报错不能用
Steps to Reproduce
Expected Behavior
Actual Behavior
Screenshots / Screen Recordings
Operating System
Current Qoder Version (Menu → About Qoder → Copy)
