Fix so that ending slash doesn't matter for characters path

internal/backend/characters.go

@@ -1,6 +1,7 @@
 package backend
 
 import (
+	"fmt"
 	"log"
 	"os"
 	"strings"
@@ -8,6 +9,10 @@ import (
 
 func GetCharacterList() []string {
 	charactersPath := os.Getenv("CHARACTERS_PATH")
+	fmt.Printf("dir: %s\n", charactersPath)
+	if !strings.HasSuffix(charactersPath, "/") {
+		charactersPath += "/"
+	}
 	files, err := os.ReadDir(charactersPath)
 	if err != nil {
 		log.Fatal(err)
@@ -24,7 +29,11 @@ func GetCharacterList() []string {
 
 func GetCharacter(character string) string {
 	charactersPath := os.Getenv("CHARACTERS_PATH")
-	return charactersPath + "/" + character
+	fmt.Printf("dir: %s\n", charactersPath)
+	if !strings.HasSuffix(charactersPath, "/") {
+		charactersPath += "/"
+	}
+	return charactersPath + character
 }
 
 func isImage(entry os.DirEntry) bool {