Description: This test case validates that when a user attempts to access a protected page using an expired session token, the system correctly rejects the request, invalidates the session, and redirects the user to the login page without exposing any protected data.

Preconditions:

1. User account already exists with valid credentials.
2. Access to the login page of https://qualityfolio.dev/.
3. An expired or manually invalidated session token is available for testing.

Steps:

1. Log into the application with valid credentials.
2. Allow the session to expire (or manually invalidate the token via browser devtools).
3. Attempt to navigate to a protected page (e.g., dashboard).
4. Observe the system response.
5. Verify that the user is redirected to the login page.

Expected Results:

1. The system detects the expired session token.
2. Access to the protected page is denied.
3. The user is redirected to the login page with a message such as "Your session has expired. Please log in again."
4. No protected data is visible or accessible during or after the redirect.