feat: add СХД configuration type with storage-specific tabs and LOT catalog guide

- Add config_type field ("server"|"storage") to Configuration and LocalConfiguration
- Create modal: Сервер/СХД segmented control in configs.html and project_detail.html
- Configurator: ENC/DKC/CTL categories in Base tab, HIC section in PCI tab hidden for server configs
- Add SW tab (categories: SW) to configurator, visible only when components present
- TAB_CONFIG.pci: add HIC section for storage HIC adapters (separate from server HBA/NIC)
- Migration 029: ALTER TABLE qt_configurations ADD COLUMN config_type
- Fix: skip Error 1833 (Cannot change column used in FK) in GORM AutoMigrate
- Operator guide: docs/storage-components-guide.md with LOT naming rules and DE4000H catalog template

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

internal/localdb/converters.go

@@ -34,6 +34,7 @@ func ConfigurationToLocal(cfg *models.Configuration) *LocalConfiguration {
 		PricelistID:           cfg.PricelistID,
 		WarehousePricelistID:  cfg.WarehousePricelistID,
 		CompetitorPricelistID: cfg.CompetitorPricelistID,
+		ConfigType:            cfg.ConfigType,
 		VendorSpec:            modelVendorSpecToLocal(cfg.VendorSpec),
 		DisablePriceRefresh:   cfg.DisablePriceRefresh,
 		OnlyInStock:           cfg.OnlyInStock,
@@ -82,6 +83,7 @@ func LocalToConfiguration(local *LocalConfiguration) *models.Configuration {
 		PricelistID:           local.PricelistID,
 		WarehousePricelistID:  local.WarehousePricelistID,
 		CompetitorPricelistID: local.CompetitorPricelistID,
+		ConfigType:            local.ConfigType,
 		VendorSpec:            localVendorSpecToModel(local.VendorSpec),
 		DisablePriceRefresh:   local.DisablePriceRefresh,
 		OnlyInStock:           local.OnlyInStock,

internal/localdb/models.go

@@ -110,6 +110,7 @@ type LocalConfiguration struct {
 	CreatedAt             time.Time                   `json:"created_at"`
 	UpdatedAt             time.Time                   `json:"updated_at"`
 	SyncedAt              *time.Time                  `json:"synced_at"`
+	ConfigType            string                      `gorm:"default:server" json:"config_type"` // "server" | "storage"
 	SyncStatus            string                      `gorm:"default:'local'" json:"sync_status"` // 'local', 'synced', 'modified'
 	OriginalUserID        uint                        `json:"original_user_id"`                   // UserID from MariaDB for reference
 	OriginalUsername      string                      `gorm:"not null;default:'';index" json:"original_username"`

internal/models/configuration.go

@@ -111,6 +111,7 @@ type Configuration struct {
 	WarehousePricelistID  *uint       `gorm:"index" json:"warehouse_pricelist_id,omitempty"`
 	CompetitorPricelistID *uint       `gorm:"index" json:"competitor_pricelist_id,omitempty"`
 	VendorSpec            VendorSpec  `gorm:"type:json" json:"vendor_spec,omitempty"`
+	ConfigType            string      `gorm:"size:20;default:server" json:"config_type"` // "server" | "storage"
 	DisablePriceRefresh   bool        `gorm:"default:false" json:"disable_price_refresh"`
 	OnlyInStock           bool        `gorm:"default:false" json:"only_in_stock"`
 	Line                  int         `gorm:"column:line_no;index" json:"line"`

internal/models/models.go

@@ -31,7 +31,9 @@ func Migrate(db *gorm.DB) error {
 			errStr := err.Error()
 			if strings.Contains(errStr, "Can't DROP") ||
 				strings.Contains(errStr, "Duplicate key name") ||
-				strings.Contains(errStr, "check that it exists") {
+				strings.Contains(errStr, "check that it exists") ||
+				strings.Contains(errStr, "Cannot change column") ||
+				strings.Contains(errStr, "used in a foreign key constraint") {
 				slog.Warn("migration warning (skipped)", "model", model, "error", errStr)
 				continue
 			}

internal/services/configuration.go

@@ -58,6 +58,7 @@ type CreateConfigRequest struct {
 	PricelistID           *uint              `json:"pricelist_id,omitempty"`
 	WarehousePricelistID  *uint              `json:"warehouse_pricelist_id,omitempty"`
 	CompetitorPricelistID *uint              `json:"competitor_pricelist_id,omitempty"`
+	ConfigType            string             `json:"config_type,omitempty"` // "server" | "storage"
 	DisablePriceRefresh   bool               `json:"disable_price_refresh"`
 	OnlyInStock           bool               `json:"only_in_stock"`
 }
@@ -103,9 +104,13 @@ func (s *ConfigurationService) Create(ownerUsername string, req *CreateConfigReq
 		PricelistID:           pricelistID,
 		WarehousePricelistID:  req.WarehousePricelistID,
 		CompetitorPricelistID: req.CompetitorPricelistID,
+		ConfigType:            req.ConfigType,
 		DisablePriceRefresh:   req.DisablePriceRefresh,
 		OnlyInStock:           req.OnlyInStock,
 	}
+	if config.ConfigType == "" {
+		config.ConfigType = "server"
+	}
 
 	if err := s.configRepo.Create(config); err != nil {
 		return nil, err

internal/services/local_configuration.go

@@ -101,10 +101,14 @@ func (s *LocalConfigurationService) Create(ownerUsername string, req *CreateConf
 		PricelistID:           pricelistID,
 		WarehousePricelistID:  req.WarehousePricelistID,
 		CompetitorPricelistID: req.CompetitorPricelistID,
+		ConfigType:            req.ConfigType,
 		DisablePriceRefresh:   req.DisablePriceRefresh,
 		OnlyInStock:           req.OnlyInStock,
 		CreatedAt:             time.Now(),
 	}
+	if cfg.ConfigType == "" {
+		cfg.ConfigType = "server"
+	}
 
 	// Convert to local model
 	localCfg := localdb.ConfigurationToLocal(cfg)