The assistant tells you when it cannot reply

The Sustentus assistant now checks whether it can reach its model before you start typing. If it cannot, a short notice appears above the message box. Sending stays enabled — the check is a warning, not a lock — so you can still try, but you will not lose a carefully written question to a silent failure.

Nothing appears when the check itself cannot run. A test that has not answered is not evidence that the assistant is down, and we would rather say nothing than tell you it is broken when it is not.

Requirements conversations changed too. When the BRD chat cannot reach its model it now says so in plain words and invites you to try again, instead of showing the raw technical error it used to. Your lead stays exactly where it is, and you can pick the conversation back up when service returns.