v1.7.0

Fixed

• Chat health no longer cries wolf over one old failure. The sensor used to
  read degraded if the add-on's rolling window held any failed chat, and that
  window is trimmed by count (the last 50 chats), never by age — so on a quiet
  install a single blip could keep the sensor red for days. It now reads
  degraded on three failed chats in a row, or when one chat in ten or more is
  failing; and clears again once the clean chats since the last failure outnumber
  the failures behind them, or that failure is over 6 hours old. One failure 19 hours ago with 37 clean chats since now reads ok, with the
  detail still in the attributes — while a fault that keeps recurring stays
  visible instead of being averaged away.

Added

• A live outage shows up immediately. Three failed chats in a row now reads
  degraded on its own, without waiting for the failure rate to climb. A rate
  measured over the last 50 chats can't see a fresh outage until it has diluted
  that window — on a quiet install, potentially days.
• Chat health shows its working. New attributes: recent_ok, failure_rate,
  and — from add-on 1.49.0 — consecutive_ok / consecutive_failed (chats since
  the last failure, and since the last success) plus last_failure,
  window_from and window_to, so you can see when the trouble was, not just
  that there was some. On an older add-on those are null and the sensor judges on
  the rate alone; a missing field neither clears a warning nor invents one.