Улучшения управления ценами и конфигурациями

- Добавлено отображение последней полученной цены в окне настройки цены
- Добавлен функционал переименования конфигураций (PATCH /api/configs/:uuid/rename)
- Изменён формат имени файла при экспорте: "YYYY-MM-DD NAME SPEC.ext"
- Исправлена сортировка компонентов: перенесена на сервер для корректной работы с пагинацией
- Добавлен расчёт popularity_score на основе котировок из lot_log
- Исправлена потеря настроек (метод, период, коэффициент) при пересчёте цен

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

internal/repository/component.go

@@ -16,9 +16,11 @@ func NewComponentRepository(db *gorm.DB) *ComponentRepository {
 }
 
 type ComponentFilter struct {
-	Category string
-	Search   string
-	HasPrice bool
+	Category  string
+	Search    string
+	HasPrice  bool
+	SortField string
+	SortDir   string
 }
 
 func (r *ComponentRepository) List(filter ComponentFilter, offset, limit int) ([]models.LotMetadata, int64, error) {
@@ -43,10 +45,33 @@ func (r *ComponentRepository) List(filter ComponentFilter, offset, limit int) ([
 
 	query.Count(&total)
 
-	// Sort by popularity + freshness, no price goes last
+	// Apply sorting
+	sortDir := "ASC"
+	if filter.SortDir == "desc" {
+		sortDir = "DESC"
+	}
+
+	switch filter.SortField {
+	case "popularity_score":
+		query = query.Order("popularity_score " + sortDir)
+	case "current_price":
+		query = query.Order("CASE WHEN current_price IS NULL OR current_price = 0 THEN 1 ELSE 0 END").
+			Order("current_price " + sortDir)
+	case "lot_name":
+		query = query.Order("lot_name " + sortDir)
+	case "quote_count":
+		// Sort by quote count from lot_log table
+		query = query.
+			Select("qt_lot_metadata.*, (SELECT COUNT(*) FROM lot_log WHERE lot_log.lot = qt_lot_metadata.lot_name) as quote_count_sort").
+			Order("quote_count_sort " + sortDir)
+	default:
+		// Default: sort by popularity, no price goes last
+		query = query.
+			Order("CASE WHEN current_price IS NULL OR current_price = 0 THEN 1 ELSE 0 END").
+			Order("popularity_score DESC")
+	}
+
 	err := query.
-		Order("CASE WHEN current_price IS NULL OR current_price = 0 THEN 1 ELSE 0 END").
-		Order("popularity_score DESC").
 		Offset(offset).
 		Limit(limit).
 		Find(&components).Error

internal/repository/stats.go

@@ -90,3 +90,26 @@ func (r *StatsRepository) ResetMonthlyCounters() error {
 		Where("1 = 1").
 		Update("quotes_last_30d", 0).Error
 }
+
+// UpdatePopularityScores recalculates popularity_score in qt_lot_metadata
+// based on supplier quotes from lot_log table
+func (r *StatsRepository) UpdatePopularityScores() error {
+	// Formula: popularity_score = quotes_last_30d * 3 + quotes_last_90d * 1 + quotes_total * 0.1
+	// This gives more weight to recent supplier activity
+	return r.db.Exec(`
+		UPDATE qt_lot_metadata m
+		LEFT JOIN (
+			SELECT
+				lot,
+				COUNT(*) as quotes_total,
+				SUM(CASE WHEN date >= DATE_SUB(NOW(), INTERVAL 30 DAY) THEN 1 ELSE 0 END) as quotes_last_30d,
+				SUM(CASE WHEN date >= DATE_SUB(NOW(), INTERVAL 90 DAY) THEN 1 ELSE 0 END) as quotes_last_90d
+			FROM lot_log
+			GROUP BY lot
+		) s ON m.lot_name = s.lot
+		SET m.popularity_score = COALESCE(
+			s.quotes_last_30d * 3 + s.quotes_last_90d * 1 + s.quotes_total * 0.1,
+			0
+		)
+	`).Error
+}