feat: hand off upsell conversations to humans

apps/dashboard/src/features/conversations/conversation-detail.tsx

@@ -163,7 +163,7 @@ function automationStatusMessage(conversation: ConversationDetailResponse): stri
     case 'image-received':
       return 'Image received. Automation is complete.';
     case 'human-required':
-      return 'Automated turns are exhausted. A human should take over.';
+      return conversation.automation.handoffReason ?? 'Automated turns are exhausted. A human should take over.';
     case 'boundary':
       return 'Automation stopped because the user set a boundary.';
     case 'user-overridden':