Add price refresh functionality to configurator

- Add price_updated_at field to qt_configurations table to track when prices were last updated
- Add RefreshPrices() method in configuration service to update all component prices with current values from database
- Add POST /api/configs/:uuid/refresh-prices API endpoint for price updates
- Add "Refresh Prices" button in configurator UI next to Save button
- Display last price update timestamp in human-readable format (e.g., "5 min ago", "2 hours ago")
- Create migration 004_add_price_updated_at.sql for database schema update
- Update CLAUDE.md documentation with new API endpoint and schema changes
- Add MIGRATION_PRICE_REFRESH.md with detailed migration instructions

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

internal/handlers/configuration.go

@@ -181,6 +181,25 @@ func (h *ConfigurationHandler) Clone(c *gin.Context) {
 	c.JSON(http.StatusCreated, config)
 }
 
+func (h *ConfigurationHandler) RefreshPrices(c *gin.Context) {
+	userID := middleware.GetUserID(c)
+	uuid := c.Param("uuid")
+
+	config, err := h.configService.RefreshPrices(uuid, userID)
+	if err != nil {
+		status := http.StatusInternalServerError
+		if err == services.ErrConfigNotFound {
+			status = http.StatusNotFound
+		} else if err == services.ErrConfigForbidden {
+			status = http.StatusForbidden
+		}
+		c.JSON(status, gin.H{"error": err.Error()})
+		return
+	}
+
+	c.JSON(http.StatusOK, config)
+}
+
 // func (h *ConfigurationHandler) ExportJSON(c *gin.Context) {
 // 	userID := middleware.GetUserID(c)
 // 	uuid := c.Param("uuid")

internal/models/configuration.go

@@ -40,17 +40,18 @@ func (c ConfigItems) Total() float64 {
 }
 
 type Configuration struct {
-	ID            uint        `gorm:"primaryKey;autoIncrement" json:"id"`
-	UUID          string      `gorm:"size:36;uniqueIndex;not null" json:"uuid"`
-	UserID        uint        `gorm:"not null" json:"user_id"`
-	Name          string      `gorm:"size:200;not null" json:"name"`
-	Items         ConfigItems `gorm:"type:json;not null" json:"items"`
-	TotalPrice    *float64    `gorm:"type:decimal(12,2)" json:"total_price"`
-	CustomPrice   *float64    `gorm:"type:decimal(12,2)" json:"custom_price"`
-	Notes         string      `gorm:"type:text" json:"notes"`
-	IsTemplate    bool        `gorm:"default:false" json:"is_template"`
-	ServerCount   int         `gorm:"default:1" json:"server_count"`
-	CreatedAt     time.Time   `gorm:"autoCreateTime" json:"created_at"`
+	ID               uint       `gorm:"primaryKey;autoIncrement" json:"id"`
+	UUID             string     `gorm:"size:36;uniqueIndex;not null" json:"uuid"`
+	UserID           uint       `gorm:"not null" json:"user_id"`
+	Name             string     `gorm:"size:200;not null" json:"name"`
+	Items            ConfigItems `gorm:"type:json;not null" json:"items"`
+	TotalPrice       *float64   `gorm:"type:decimal(12,2)" json:"total_price"`
+	CustomPrice      *float64   `gorm:"type:decimal(12,2)" json:"custom_price"`
+	Notes            string     `gorm:"type:text" json:"notes"`
+	IsTemplate       bool       `gorm:"default:false" json:"is_template"`
+	ServerCount      int        `gorm:"default:1" json:"server_count"`
+	PriceUpdatedAt   *time.Time `gorm:"type:timestamp" json:"price_updated_at,omitempty"`
+	CreatedAt        time.Time  `gorm:"autoCreateTime" json:"created_at"`
 
 	User *User `gorm:"foreignKey:UserID" json:"user,omitempty"`
 }

internal/services/configuration.go

@@ -2,6 +2,7 @@ package services
 
 import (
 	"errors"
+	"time"
 
 	"github.com/google/uuid"
 	"git.mchus.pro/mchus/quoteforge/internal/models"
@@ -205,6 +206,58 @@ func (s *ConfigurationService) ListTemplates(page, perPage int) ([]models.Config
 	return s.configRepo.ListTemplates(offset, perPage)
 }
 
+// RefreshPrices updates all component prices in the configuration with current prices
+func (s *ConfigurationService) RefreshPrices(uuid string, userID uint) (*models.Configuration, error) {
+	config, err := s.configRepo.GetByUUID(uuid)
+	if err != nil {
+		return nil, ErrConfigNotFound
+	}
+
+	if config.UserID != userID {
+		return nil, ErrConfigForbidden
+	}
+
+	// Update prices for all items
+	updatedItems := make(models.ConfigItems, len(config.Items))
+	for i, item := range config.Items {
+		// Get current component price
+		metadata, err := s.componentRepo.GetByLotName(item.LotName)
+		if err != nil || metadata.CurrentPrice == nil {
+			// Keep original item if component not found or no price available
+			updatedItems[i] = item
+			continue
+		}
+
+		// Update item with current price
+		updatedItems[i] = models.ConfigItem{
+			LotName:   item.LotName,
+			Quantity:  item.Quantity,
+			UnitPrice: *metadata.CurrentPrice,
+		}
+	}
+
+	// Update configuration
+	config.Items = updatedItems
+	total := updatedItems.Total()
+
+	// If server count is greater than 1, multiply the total by server count
+	if config.ServerCount > 1 {
+		total *= float64(config.ServerCount)
+	}
+
+	config.TotalPrice = &total
+
+	// Set price update timestamp
+	now := time.Now()
+	config.PriceUpdatedAt = &now
+
+	if err := s.configRepo.Update(config); err != nil {
+		return nil, err
+	}
+
+	return config, nil
+}
+
 // // Export configuration as JSON
 // type ConfigExport struct {
 // 	Name  string             `json:"name"`