fix: 设备组详情补充 auth_type/device_type 字段，统一用户名显示

- FamilyMemberItem 新增 auth_type、device_type 字段
- FamilySummary 新增 owner_auth_type 字段
- findUserIdentifiers 返回 identifierInfo（含 auth_type）
- 新增 parseDeviceType() 从 UserAgent 解析设备类型

Co-Authored-By: claude-flow <ruv@ruv.net>

internal/logic/admin/user/getFamilyListLogic.go

@@ -123,7 +123,9 @@ func (l *GetFamilyListLogic) GetFamilyList(req *types.GetFamilyListRequest) (*ty
 
 	list := make([]types.FamilySummary, 0, len(families))
 	for _, family := range families {
-		ownerIdentifier := identifierMap[family.OwnerUserId]
+		ownerInfo := identifierMap[family.OwnerUserId]
+		ownerIdentifier := ownerInfo.Identifier
+		ownerAuthType := ownerInfo.AuthType
 		if ownerIdentifier == "" {
 			ownerIdentifier = strconv.FormatInt(family.OwnerUserId, 10)
 		}
@@ -132,6 +134,7 @@ func (l *GetFamilyListLogic) GetFamilyList(req *types.GetFamilyListRequest) (*ty
 			FamilyId:          family.Id,
 			OwnerUserId:       family.OwnerUserId,
 			OwnerIdentifier:   ownerIdentifier,
+			OwnerAuthType:     ownerAuthType,
 			Status:            mapFamilyStatus(family.Status),
 			ActiveMemberCount: countMap[family.Id],
 			MaxMembers:        family.MaxMembers,