turns: never mistake an empty success for Annie

surfaces/quickshell/services/Ai.qml

@@ -537,6 +537,15 @@ Singleton {
         case "inference_strain":
             console.log(`[Souveraine] inference strain: attempt ${event.attempt}, status ${event.status}, model ${event.model}`);
             break;
+        case "error":
+            // A failed engine turn is still a visible answer from the
+            // substrate. Silently dropping this event leaves the empty
+            // assistant container behind and makes a healthy server look as
+            // though the agent simply stopped speaking.
+            root.appendToStreaming(
+                Translation.tr("**Request failed** — %1").arg(event.message ?? Translation.tr("unknown turn error"))
+            );
+            break;
         case "atmosphere":
         case "outfit":
         case "itinerary":