Limit expense categories

Limit the number of expense categories to 식비, 생활비, 교통비.

src/components/TransactionCard.tsx

@@ -1,6 +1,6 @@
 
 import React from 'react';
-import { ArrowDownIcon, ArrowUpIcon, ShoppingBag, Coffee, Home, Car, Gift } from 'lucide-react';
+import { ArrowDownIcon, ArrowUpIcon, Coffee, Home, Car } from 'lucide-react';
 import { cn } from '@/lib/utils';
 
 export type Transaction = {
@@ -13,12 +13,9 @@ export type Transaction = {
 };
 
 const categoryIcons: Record<string, React.ReactNode> = {
-  shopping: <ShoppingBag size={18} />,
-  food: <Coffee size={18} />,
-  housing: <Home size={18} />,
-  transportation: <Car size={18} />,
-  entertainment: <Gift size={18} />,
-  // Add more categories as needed
+  식비: <Coffee size={18} />,
+  생활비: <Home size={18} />,
+  교통비: <Car size={18} />,
 };
 
 interface TransactionCardProps {
@@ -39,7 +36,7 @@ const TransactionCard: React.FC<TransactionCardProps> = ({ transaction }) => {
       <div className="flex items-center justify-between">
         <div className="flex items-center gap-3">
           <div className="p-2 rounded-full bg-neuro-income/10 text-neuro-income">
-            {categoryIcons[category] || <ShoppingBag size={18} />}
+            {categoryIcons[category] || <Coffee size={18} />}
           </div>
           
           <div>