Add project variants and UI updates

internal/services/sync/service.go

@@ -200,6 +200,7 @@ func (s *Service) ImportProjectsToLocal() (*ProjectImportResult, error) {
 				}
 
 				existing.OwnerUsername = project.OwnerUsername
+				existing.Code = project.Code
 				existing.Name = project.Name
 				existing.TrackerURL = project.TrackerURL
 				existing.IsActive = project.IsActive
@@ -848,6 +849,12 @@ func (s *Service) pushProjectChange(change *localdb.PendingChange) error {
 	projectRepo := repository.NewProjectRepository(mariaDB)
 	project := payload.Snapshot
 	project.UUID = payload.ProjectUUID
+	if strings.TrimSpace(project.Code) == "" {
+		project.Code = strings.TrimSpace(derefString(project.Name))
+		if project.Code == "" {
+			project.Code = project.UUID
+		}
+	}
 
 	if err := projectRepo.UpsertByUUID(&project); err != nil {
 		return fmt.Errorf("upsert project on server: %w", err)
@@ -868,6 +875,17 @@ func (s *Service) pushProjectChange(change *localdb.PendingChange) error {
 	return nil
 }
 
+func derefString(value *string) string {
+	if value == nil {
+		return ""
+	}
+	return *value
+}
+
+func ptrString(value string) *string {
+	return &value
+}
+
 func decodeProjectChangePayload(change *localdb.PendingChange) (ProjectChangePayload, error) {
 	var payload ProjectChangePayload
 	if err := json.Unmarshal([]byte(change.Payload), &payload); err == nil && payload.ProjectUUID != "" {
@@ -1138,7 +1156,8 @@ func (s *Service) ensureConfigurationProject(mariaDB *gorm.DB, cfg *models.Confi
 		systemProject = &models.Project{
 			UUID:          uuid.NewString(),
 			OwnerUsername: "",
-			Name:          "Без проекта",
+			Code:          "Без проекта",
+			Name:          ptrString("Без проекта"),
 			IsActive:      true,
 			IsSystem:      true,
 		}
@@ -1302,6 +1321,21 @@ func (s *Service) loadCurrentConfigurationState(configurationUUID string) (model
 		}
 	}
 
+	if currentVersionNo == 0 {
+		if err := s.repairMissingConfigurationVersion(localCfg); err != nil {
+			return models.Configuration{}, "", 0, fmt.Errorf("repair missing configuration version: %w", err)
+		}
+		var latest localdb.LocalConfigurationVersion
+		err = s.localDB.DB().
+			Where("configuration_uuid = ?", configurationUUID).
+			Order("version_no DESC").
+			First(&latest).Error
+		if err == nil {
+			currentVersionNo = latest.VersionNo
+			currentVersionID = latest.ID
+		}
+	}
+
 	if currentVersionNo == 0 {
 		return models.Configuration{}, "", 0, fmt.Errorf("no local configuration version found for %s", configurationUUID)
 	}
@@ -1309,6 +1343,64 @@ func (s *Service) loadCurrentConfigurationState(configurationUUID string) (model
 	return cfg, currentVersionID, currentVersionNo, nil
 }
 
+func (s *Service) repairMissingConfigurationVersion(localCfg *localdb.LocalConfiguration) error {
+	if localCfg == nil {
+		return fmt.Errorf("local configuration is nil")
+	}
+
+	return s.localDB.DB().Transaction(func(tx *gorm.DB) error {
+		var cfg localdb.LocalConfiguration
+		if err := tx.Where("uuid = ?", localCfg.UUID).First(&cfg).Error; err != nil {
+			return fmt.Errorf("load local configuration: %w", err)
+		}
+
+		// If versions exist, just make sure current_version_id is set.
+		var latest localdb.LocalConfigurationVersion
+		if err := tx.Where("configuration_uuid = ?", cfg.UUID).
+			Order("version_no DESC").
+			First(&latest).Error; err == nil {
+			if cfg.CurrentVersionID == nil || *cfg.CurrentVersionID == "" {
+				if err := tx.Model(&localdb.LocalConfiguration{}).
+					Where("uuid = ?", cfg.UUID).
+					Update("current_version_id", latest.ID).Error; err != nil {
+					return fmt.Errorf("set current version id: %w", err)
+				}
+			}
+			return nil
+		} else if !errors.Is(err, gorm.ErrRecordNotFound) {
+			return fmt.Errorf("load latest version: %w", err)
+		}
+
+		snapshot, err := localdb.BuildConfigurationSnapshot(&cfg)
+		if err != nil {
+			return fmt.Errorf("build configuration snapshot: %w", err)
+		}
+
+		note := "Auto-repaired missing local version"
+		version := localdb.LocalConfigurationVersion{
+			ID:                uuid.NewString(),
+			ConfigurationUUID: cfg.UUID,
+			VersionNo:         1,
+			Data:              snapshot,
+			ChangeNote:        &note,
+			AppVersion:        appmeta.Version(),
+			CreatedAt:         time.Now(),
+		}
+
+		if err := tx.Create(&version).Error; err != nil {
+			return fmt.Errorf("create initial version: %w", err)
+		}
+		if err := tx.Model(&localdb.LocalConfiguration{}).
+			Where("uuid = ?", cfg.UUID).
+			Update("current_version_id", version.ID).Error; err != nil {
+			return fmt.Errorf("set current version id: %w", err)
+		}
+
+		slog.Warn("repaired missing local configuration version", "uuid", cfg.UUID, "version_no", version.VersionNo)
+		return nil
+	})
+}
+
 // NOTE: prepared for future conflict resolution:
 // when server starts storing version metadata, we can compare payload.CurrentVersionNo
 // against remote version and branch into custom strategies. For now use last-write-wins.