Fix: Resolve issue with transaction display

Addresses a bug where transactions were not displayed on the transaction history page and expense amounts were showing as zero.

src/components/transactions/TransactionsHeader.tsx

@@ -24,6 +24,11 @@ const TransactionsHeader: React.FC<TransactionsHeaderProps> = ({
   totalExpenses,
   isDisabled
 }) => {
+  console.log('TransactionsHeader 렌더링:', { selectedMonth, totalExpenses });
+  
+  // 예산 정보가 없는 경우 기본값 사용
+  const targetAmount = budgetData?.monthly?.targetAmount || 0;
+  
   return (
     <header className="py-8">
       <h1 className="text-2xl font-bold neuro-text mb-5">지출 내역</h1>
@@ -70,7 +75,7 @@ const TransactionsHeader: React.FC<TransactionsHeaderProps> = ({
         <div className="neuro-card">
           <p className="text-sm text-gray-500 mb-1">총 예산</p>
           <p className="text-lg font-bold text-neuro-income">
-            {formatCurrency(budgetData?.monthly?.targetAmount || 0)}
+            {formatCurrency(targetAmount)}
           </p>
         </div>
         <div className="neuro-card">