add foreign key constraint on client session table

api/account/logout.go

@@ -19,6 +19,7 @@ package account
 
 import (
 	"database/sql"
+	"errors"
 	"fmt"
 
 	"github.com/pagefaultgames/rogueserver/db"
@@ -28,7 +29,7 @@ import (
 func Logout(token []byte) error {
 	err := db.RemoveSessionFromToken(token)
 	if err != nil {
-		if err == sql.ErrNoRows {
+		if errors.Is(err, sql.ErrNoRows) {
 			return fmt.Errorf("token not found")
 		}