Fix offline usage tracking and active pricelist sync

internal/repository/pricelist.go

@@ -29,6 +29,34 @@ func (r *PricelistRepository) List(offset, limit int) ([]models.PricelistSummary
 		return nil, 0, fmt.Errorf("listing pricelists: %w", err)
 	}
 
+	return r.toSummaries(pricelists), total, nil
+}
+
+// ListActive returns active pricelists with pagination.
+func (r *PricelistRepository) ListActive(offset, limit int) ([]models.PricelistSummary, int64, error) {
+	var total int64
+	if err := r.db.Model(&models.Pricelist{}).Where("is_active = ?", true).Count(&total).Error; err != nil {
+		return nil, 0, fmt.Errorf("counting active pricelists: %w", err)
+	}
+
+	var pricelists []models.Pricelist
+	if err := r.db.Where("is_active = ?", true).Order("created_at DESC").Offset(offset).Limit(limit).Find(&pricelists).Error; err != nil {
+		return nil, 0, fmt.Errorf("listing active pricelists: %w", err)
+	}
+
+	return r.toSummaries(pricelists), total, nil
+}
+
+// CountActive returns the number of active pricelists.
+func (r *PricelistRepository) CountActive() (int64, error) {
+	var total int64
+	if err := r.db.Model(&models.Pricelist{}).Where("is_active = ?", true).Count(&total).Error; err != nil {
+		return 0, fmt.Errorf("counting active pricelists: %w", err)
+	}
+	return total, nil
+}
+
+func (r *PricelistRepository) toSummaries(pricelists []models.Pricelist) []models.PricelistSummary {
 	// Get item counts for each pricelist
 	summaries := make([]models.PricelistSummary, len(pricelists))
 	for i, pl := range pricelists {
@@ -48,7 +76,7 @@ func (r *PricelistRepository) List(offset, limit int) ([]models.PricelistSummary
 		}
 	}
 
-	return summaries, total, nil
+	return summaries
 }
 
 // GetByID returns a pricelist by ID