feat(03.1-01): 修复静态 DTO 映射缺口

- toDeviceResponse() 补全 5 个 DB 缓存字段（OnlineStatus/LastOnlineTime/SoftwareVersion/SwitchMode/LastGatewaySyncAt）
- ListBindings() 补全 IsCurrent 字段映射
- buildDeviceResolveResponse() 补全 isCurrentMap + BoundCardInfo.IsCurrent + 5 个 DB 缓存字段
- GetRealtimeStatus() device case 补全 isCurrentMap + BoundCardInfo.IsCurrent

internal/service/asset/service.go

@@ -114,6 +114,11 @@ func (s *Service) buildDeviceResolveResponse(ctx context.Context, device *model.
 		DeviceType:          device.DeviceType,
 		MaxSimSlots:         device.MaxSimSlots,
 		Manufacturer:        device.Manufacturer,
+		OnlineStatus:        device.OnlineStatus,
+		LastOnlineTime:      device.LastOnlineTime,
+		SoftwareVersion:     device.SoftwareVersion,
+		SwitchMode:          device.SwitchMode,
+		LastGatewaySyncAt:   device.LastGatewaySyncAt,
 	}
 
 	// 查绑定卡
@@ -122,9 +127,11 @@ func (s *Service) buildDeviceResolveResponse(ctx context.Context, device *model.
 		resp.BoundCardCount = len(bindings)
 		cardIDs := make([]uint, 0, len(bindings))
 		slotMap := make(map[uint]int, len(bindings))
+		isCurrentMap := make(map[uint]bool, len(bindings))
 		for _, b := range bindings {
 			cardIDs = append(cardIDs, b.IotCardID)
 			slotMap[b.IotCardID] = b.SlotPosition
+			isCurrentMap[b.IotCardID] = b.IsCurrent
 		}
 		cards, _ := s.iotCardStore.GetByIDs(ctx, cardIDs)
 		for _, c := range cards {
@@ -135,6 +142,7 @@ func (s *Service) buildDeviceResolveResponse(ctx context.Context, device *model.
 				NetworkStatus:  c.NetworkStatus,
 				RealNameStatus: c.RealNameStatus,
 				SlotPosition:   slotMap[c.ID],
+				IsCurrent:      isCurrentMap[c.ID],
 			})
 		}
 	}
@@ -271,9 +279,11 @@ func (s *Service) GetRealtimeStatus(ctx context.Context, assetType string, id ui
 		if err == nil && len(bindings) > 0 {
 			cardIDs := make([]uint, 0, len(bindings))
 			slotMap := make(map[uint]int, len(bindings))
+			isCurrentMap := make(map[uint]bool, len(bindings))
 			for _, b := range bindings {
 				cardIDs = append(cardIDs, b.IotCardID)
 				slotMap[b.IotCardID] = b.SlotPosition
+				isCurrentMap[b.IotCardID] = b.IsCurrent
 			}
 			cards, _ := s.iotCardStore.GetByIDs(ctx, cardIDs)
 			for _, c := range cards {
@@ -284,6 +294,7 @@ func (s *Service) GetRealtimeStatus(ctx context.Context, assetType string, id ui
 					NetworkStatus:  c.NetworkStatus,
 					RealNameStatus: c.RealNameStatus,
 					SlotPosition:   slotMap[c.ID],
+					IsCurrent:      isCurrentMap[c.ID],
 				})
 			}
 		}

internal/service/device/binding.go

@@ -57,6 +57,7 @@ func (s *Service) ListBindings(ctx context.Context, deviceID uint) (*dto.ListDev
 			CarrierName:  card.CarrierName, // 直接使用 IotCard 的冗余字段
 			Status:       card.Status,
 			BindTime:     binding.BindTime,
+			IsCurrent:    binding.IsCurrent,
 		}
 		responses = append(responses, resp)
 	}

internal/service/device/service.go

@@ -556,6 +556,11 @@ func (s *Service) toDeviceResponse(device *model.Device, shopMap map[uint]string
 		ActivatedAt:         device.ActivatedAt,
 		CreatedAt:           device.CreatedAt,
 		UpdatedAt:           device.UpdatedAt,
+		OnlineStatus:        device.OnlineStatus,
+		LastOnlineTime:      device.LastOnlineTime,
+		SoftwareVersion:     device.SoftwareVersion,
+		SwitchMode:          device.SwitchMode,
+		LastGatewaySyncAt:   device.LastGatewaySyncAt,
 	}
 
 	if device.ShopID != nil && *device.ShopID > 0 {