Update app.py

app.py

@@ -105,9 +105,10 @@ class FirebaseKnowledgeBase:
             # Sort by priority (high, medium, low) and then by timestamp
             priority_order = {"high": 1, "medium": 2, "low": 3}
             results.sort(key=lambda x: (
-                priority_order.get(x.get('metadata', {}).get('priority', 'low').lower(), 
+                priority_order.get(x.get('metadata', {}).get('priority', 'low').lower(), 3),
                 x.get('metadata', {}).get('timestamp', 0)
             ))
+
             return results[:limit]
         except Exception as e:
             logger.error(f"Failed to query knowledge base: {e}")