Feature: App should drop services from its discovery cache after a period of time

[mcous]

overview

As a user that used to connect to a robot that I don't have anymore, I would like it to stop showing up in my app's robot list as "unable to find"

The app should clean services out of its discovery cache automatically after their last seen date becomes too old

acceptance criteria

• If a robot doesn't advertise, respond on /health, nor respond on /server/update/health for 60 days, the app should remove it from its discovery.json cache

implementation notes

60 days subject to approval by UX / product / support

┆Issue is synchronized with this Wrike Task by Unito

[mcous]

App will automatically clear out stale IP addresses for a given robot, which should resolve much of the problems this ticket was written to address. Given the large UX implications of this ticket, going to close it out in favor of a more considered approach when we actually decide to tackle discrete removal of robots from the list