script never gets confirmation after sign-in

I'm trying the latest code, using the "login" flow. It brings up the claude window and I'm able to login. But then the python app never sees that the sign-in was successful -- it's just hung here forever:

<img width="1031" height="396" alt="Image" src="https://github.com/user-attachments/assets/2f5826e2-b1c7-404b-b7a6-5711b89a302b" />