Power measurement plot y axis

Would be nice if the power measurement GUI can auto adjust the Y axis range. Right now, with only Cousa objective, I see the line cropped at the top.

<img width="554" height="416" alt="Image" src="https://github.com/user-attachments/assets/8b3dc8f5-c7e8-46db-903c-1ac30285af8c" />