feat: 实现卡和设备的套餐系列绑定功能

- 添加 Device 和 IotCard 模型的 SeriesID 字段
- 实现 DeviceService 和 IotCardService 的套餐系列绑定逻辑
- 添加 DeviceStore 和 IotCardStore 的数据库操作方法
- 更新 API 接口和路由支持套餐系列绑定
- 创建数据库迁移脚本（000027_add_series_binding_fields）
- 添加完整的单元测试和集成测试
- 更新 OpenAPI 文档
- 归档 OpenSpec 变更文档

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

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

internal/store/postgres/device_store.go

@@ -106,6 +106,9 @@ func (s *DeviceStore) List(ctx context.Context, opts *store.QueryOptions, filter
 	if createdAtEnd, ok := filters["created_at_end"].(time.Time); ok && !createdAtEnd.IsZero() {
 		query = query.Where("created_at <= ?", createdAtEnd)
 	}
+	if seriesAllocationID, ok := filters["series_allocation_id"].(uint); ok && seriesAllocationID > 0 {
+		query = query.Where("series_allocation_id = ?", seriesAllocationID)
+	}
 
 	if err := query.Count(&total).Error; err != nil {
 		return nil, 0, err
@@ -181,3 +184,22 @@ func (s *DeviceStore) GetByDeviceNos(ctx context.Context, deviceNos []string) ([
 	}
 	return devices, nil
 }
+
+// BatchUpdateSeriesAllocation 批量更新设备的套餐系列分配
+func (s *DeviceStore) BatchUpdateSeriesAllocation(ctx context.Context, deviceIDs []uint, seriesAllocationID *uint) error {
+	if len(deviceIDs) == 0 {
+		return nil
+	}
+	return s.db.WithContext(ctx).Model(&model.Device{}).
+		Where("id IN ?", deviceIDs).
+		Update("series_allocation_id", seriesAllocationID).Error
+}
+
+// ListBySeriesAllocationID 根据套餐系列分配ID查询设备列表
+func (s *DeviceStore) ListBySeriesAllocationID(ctx context.Context, seriesAllocationID uint) ([]*model.Device, error) {
+	var devices []*model.Device
+	if err := s.db.WithContext(ctx).Where("series_allocation_id = ?", seriesAllocationID).Find(&devices).Error; err != nil {
+		return nil, err
+	}
+	return devices, nil
+}