Ensure useBudget is within BudgetProvider

The useBudget hook was throwing an error when used outside of a BudgetProvider. This commit ensures that the useBudget hook is always used within a BudgetProvider to prevent this error.

src/App.tsx

@@ -19,6 +19,7 @@ import ForgotPassword from './pages/ForgotPassword';
 import Analytics from './pages/Analytics';
 import PaymentMethods from './pages/PaymentMethods';
 import Settings from './pages/Settings';
+import { BudgetProvider } from './contexts/BudgetContext';
 
 // 전역 오류 핸들러
 const handleError = (error: any) => {
@@ -74,6 +75,7 @@ function App() {
   return (
     <ErrorBoundary>
       <AuthContextWrapper>
+        <BudgetProvider>
           <Router>
             <div className="flex flex-col min-h-screen">
               <NavBar />
@@ -98,6 +100,7 @@ function App() {
               <Toaster />
             </div>
           </Router>
+        </BudgetProvider>
       </AuthContextWrapper>
     </ErrorBoundary>
   );

src/pages/Index.tsx

@@ -7,10 +7,10 @@ import BudgetProgressCard from '@/components/BudgetProgressCard';
 import BudgetCategoriesSection from '@/components/BudgetCategoriesSection';
 import RecentTransactionsSection from '@/components/RecentTransactionsSection';
 import { formatCurrency, calculatePercentage } from '@/utils/formatters';
-import { BudgetProvider, useBudget } from '@/contexts/BudgetContext';
+import { useBudget } from '@/contexts/BudgetContext';
 
 // 메인 컴포넌트
-const IndexContent = () => {
+const Index = () => {
   const {
     transactions,
     budgetData,
@@ -22,6 +22,7 @@ const IndexContent = () => {
   } = useBudget();
 
   return (
+    <div className="min-h-screen bg-neuro-background pb-24">
       <div className="max-w-md mx-auto px-6">
         <Header />
 
@@ -45,19 +46,9 @@ const IndexContent = () => {
           onUpdateTransaction={updateTransaction}
         />
       </div>
-  );
-};
-
-// Provider를 감싼 컨테이너 컴포넌트
-const Index = () => {
-  return (
-    <BudgetProvider>
-      <div className="min-h-screen bg-neuro-background pb-24">
-        <IndexContent />
       <AddTransactionButton />
       <NavBar />
     </div>
-    </BudgetProvider>
   );
 };