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/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)