4/14 discussion that UI will show a "time remaining" when the timeout time is approaching. System will not auto-renew timeout for initial version, but this is enough to warn the user for the first version.
This could be a warning banner with an updating remaining time after sub-5-minutes. There could be a "logout now to refresh session" convenience button that performs a logout.
4/14 discussion that UI will show a "time remaining" when the timeout time is approaching. System will not auto-renew timeout for initial version, but this is enough to warn the user for the first version.