Show live background task counts

app/androidApp/src/main/kotlin/com/example/aiapp/TranscriptItems.kt

@@ -517,6 +517,7 @@ fun foldEvent(items: List<TranscriptItem>, entry: SeqEvent): List<TranscriptItem
         // nothing it belongs above.
         is SessionEvent.MessageDropped -> items
         is SessionEvent.Settings -> items
+        is SessionEvent.BackgroundTasks -> items
         is SessionEvent.Status -> settleReply(items, event.state)
         is SessionEvent.AuthenticationRequired ->
             items + TranscriptItem.ErrorMsg(entry.seq, event.message)