feat: add historical data management

server/internal/model/models.go

@@ -130,7 +130,8 @@ type QueueTicket struct {
 	MissedAt             *time.Time
 	PersonalDataPurgedAt *time.Time
 	PersonalDataPurgeAt  time.Time `gorm:"not null"`
-	CreatedBy            string    `gorm:"type:uuid;not null"`
+	HistoryAnonymizedAt  *time.Time
+	CreatedBy            string `gorm:"type:uuid;not null"`
 	CreatedAt            time.Time
 	UpdatedAt            time.Time
 }