fix: 修复资产卡列表未返回 realname_policy 字段

buildDeviceResolveResponse 和 GetRealtimeStatus 中构建 BoundCardInfo 时
均遗漏了 RealnamePolicy 字段赋值，导致 resolve 和 realtime-status
两个接口的设备卡列表不返回实名认证策略。字段在 Model 和 DTO 中均
已定义，Service 层补充赋值即可。

Ultraworked with [Sisyphus](https://github.com/code-yeongyu/oh-my-openagent)

Co-authored-by: Sisyphus <clio-agent@sisyphuslabs.ai>

internal/service/asset/service.go

@@ -198,6 +198,7 @@ func (s *Service) buildDeviceResolveResponse(ctx context.Context, device *model.
 				CarrierID:      c.CarrierID,
 				CarrierType:    c.CarrierType,
 				CarrierName:    c.CarrierName,
+				RealnamePolicy: c.RealnamePolicy,
 			})
 		}
 
@@ -377,6 +378,7 @@ func (s *Service) GetRealtimeStatus(ctx context.Context, assetType string, id ui
 					CarrierID:      c.CarrierID,
 					CarrierType:    c.CarrierType,
 					CarrierName:    c.CarrierName,
+					RealnamePolicy: c.RealnamePolicy,
 				})
 			}
 		}
@@ -607,11 +609,13 @@ func (s *Service) updateDeviceFromSyncInfo(ctx context.Context, deviceID uint, r
 		return
 	}
 
-	// 更新 is_current 标识（事务原子操作，per D-14 决策）
-	if err := s.deviceSimBindingStore.UpdateIsCurrentByDeviceID(ctx, deviceID, resp.CurrentIccid); err != nil {
-		logger.GetAppLogger().Warn("sync-info 更新 is_current 失败",
-			zap.Uint("device_id", deviceID),
-			zap.Error(err))
+	if resp.CurrentIccid != "" {
+		// 更新 is_current 标识（事务原子操作，per D-14 决策）
+		if err := s.deviceSimBindingStore.UpdateIsCurrentByDeviceID(ctx, deviceID, resp.CurrentIccid); err != nil {
+			logger.GetAppLogger().Warn("sync-info 更新 is_current 失败",
+				zap.Uint("device_id", deviceID),
+				zap.Error(err))
+		}
 	}
 }