WIP: save current pricing and pricelist changes

internal/localdb/models.go

@@ -128,9 +128,10 @@ func (LocalConfigurationVersion) TableName() string {
 type LocalPricelist struct {
 	ID        uint      `gorm:"primaryKey;autoIncrement" json:"id"`
 	ServerID  uint      `gorm:"not null;uniqueIndex" json:"server_id"` // ID on MariaDB server
+	Source    string    `gorm:"not null;default:'estimate';index:idx_local_pricelists_source_created_at,priority:1" json:"source"`
 	Version   string    `gorm:"not null;index" json:"version"`
 	Name      string    `json:"name"`
-	CreatedAt time.Time `json:"created_at"`
+	CreatedAt time.Time `gorm:"index:idx_local_pricelists_source_created_at,priority:2,sort:desc" json:"created_at"`
 	SyncedAt  time.Time `json:"synced_at"`
 	IsUsed    bool      `gorm:"default:false" json:"is_used"` // Used by any local configuration
 }