feat: add utils lib

app/characters/page.tsx

@@ -3,6 +3,8 @@
 import { useState, useEffect, useMemo } from 'react';
 import { useInventoryStore } from '@/store/useInventoryStore';
 
+import { isKiller } from '../lib/utils';
+
 import shared from '../../styles/shared.module.css';
 import styles from '../../styles/Characters.module.css';
 
@@ -19,8 +21,6 @@ const getIconUrl = (iconFilePath: string) => {
 
 type RoleFilter = 'all' | 'survivors' | 'killers';
 
-const isKiller = (idx: number) => idx >= 268435456;
-
 export default function CharactersPage() {
     const store = useInventoryStore();
 

app/lib/utils.ts

@@ -0,0 +1,9 @@
+export const getFileName = (iconFilePath: string): string => {
+  const base = iconFilePath.split('/').pop() ?? '';
+  return base.split('.')[0];
+};
+
+export const cleanFolderName = (name: string): string =>
+  name.replace(/[\\/:*?"<>|]/g, '_');
+
+export const isKiller = (idx: number): boolean => idx >= 268435456;