fix: remove PrivateKey, rename PublicKey in Key model

model/key.go

@@ -10,8 +10,7 @@ type Key struct {
 	ID        uint `gorm:"primaryKey"`
 	AccountID uint
 	Account   Account
-	PublicKey  string
-	PrivateKey string
+	Pubkey    string
 	CreatedAt time.Time
 	UpdatedAt time.Time
 }