fix role memory

apps/devices/views.py

@@ -149,7 +149,13 @@ class DeviceViewSet(viewsets.ViewSet):
             user=request.user, device=device
         ).select_related('role_memory').first()
 
-        if existing_binding and existing_binding.role_memory:
+        # 普通电子吧唧(DZBJ-OFF)不需要角色记忆
+        product_code = device.device_type.product_code if device.device_type else ''
+        needs_role_memory = product_code != 'DZBJ-OFF'
+
+        if not needs_role_memory:
+            role_memory = None
+        elif existing_binding and existing_binding.role_memory:
             # 已有绑定且有角色记忆 → 复用，不重复创建
             role_memory = existing_binding.role_memory
             role_memory.is_bound = True