Selecting remember me doesn't keep session across app restarts

Selecting remember me on log_in doesn't seem to retain the session across restarts.

Start by reproducing the issue in the form_demo application: select remember me during log_in, restart the app, and check whether the session remains. Trace the login and session-persistence entry points to identify where the remembered-session state is lost. Done means a remembered login survives an app restart, while an unremembered login does not.

Written by the indexing model from the issue text.