fix: harden unicode safety checks

docs/ko-KR/skills/frontend-patterns/SKILL.md

@@ -23,7 +23,7 @@ React, Next.js 및 고성능 사용자 인터페이스를 위한 모던 프론
 ### 상속보다 합성
 
 ```typescript
-// ✅ GOOD: Component composition
+// PASS: GOOD: Component composition
 interface CardProps {
   children: React.ReactNode
   variant?: 'default' | 'outlined'
@@ -304,17 +304,17 @@ export function useMarkets() {
 ### 메모이제이션
 
 ```typescript
-// ✅ useMemo for expensive computations
+// PASS: useMemo for expensive computations
 const sortedMarkets = useMemo(() => {
   return [...markets].sort((a, b) => b.volume - a.volume)
 }, [markets])
 
-// ✅ useCallback for functions passed to children
+// PASS: useCallback for functions passed to children
 const handleSearch = useCallback((query: string) => {
   setSearchQuery(query)
 }, [])
 
-// ✅ React.memo for pure components
+// PASS: React.memo for pure components
 export const MarketCard = React.memo<MarketCardProps>(({ market }) => {
   return (
     <div className="market-card">
@@ -330,7 +330,7 @@ export const MarketCard = React.memo<MarketCardProps>(({ market }) => {
 ```typescript
 import { lazy, Suspense } from 'react'
 
-// ✅ Lazy load heavy components
+// PASS: Lazy load heavy components
 const HeavyChart = lazy(() => import('./HeavyChart'))
 const ThreeJsBackground = lazy(() => import('./ThreeJsBackground'))
 
@@ -525,7 +525,7 @@ export class ErrorBoundary extends React.Component<
 ```typescript
 import { motion, AnimatePresence } from 'framer-motion'
 
-// ✅ List animations
+// PASS: List animations
 export function AnimatedMarketList({ markets }: { markets: Market[] }) {
   return (
     <AnimatePresence>
@@ -544,7 +544,7 @@ export function AnimatedMarketList({ markets }: { markets: Market[] }) {
   )
 }
 
-// ✅ Modal animations
+// PASS: Modal animations
 export function Modal({ isOpen, onClose, children }: ModalProps) {
   return (
     <AnimatePresence>