Detect invalid authn and redirect to login form

# steps to reproduce

* login
* edit local storage manually to alter the access token
* refresh

# expected

* redirect to login form

# actual

<img width="680" height="428" alt="Image" src="https://github.com/user-attachments/assets/745642b5-0c6f-441a-a978-5692f74dbd44" />