Add warning message when Credentials have expired #8
Description
Is your feature request related to a problem? Please describe.
Currently, there is no clear warning when stored credentials have expired. This can make it harder for users to understand why authentication-related features stop working and may lead to confusion or unnecessary troubleshooting.
Describe the solution you'd like
Show a clear warning message when credentials have expired. The message should clearly inform the user that their credentials are no longer valid and need to be refreshed or re-authenticated.
Describe alternatives you've considered
One alternative would be to only log the expiration internally or display a generic authentication error. However, a dedicated warning message would be much more user-friendly and would make the problem immediately understandable.
Additional context
This would improve usability by helping users quickly identify expired credentials as the cause of authentication issues instead of assuming something else is broken.