Fix budget calculation and display

Ensure daily and weekly budgets are calculated correctly based on the monthly budget, and that the monthly budget is consistent across the app.

src/contexts/budget/hooks/useBudgetState.ts

@@ -8,8 +8,11 @@ import { safelyLoadBudgetData } from '../budgetUtils';
  */
 export const useBudgetState = () => {
   // 초기 데이터 로드 시 safelyLoadBudgetData 함수 사용
-  const [budgetData, setBudgetData] = useState<BudgetData>(safelyLoadBudgetData());
-  const [selectedTab, setSelectedTab] = useState<BudgetPeriod>("daily"); // 초기값을 daily로 변경
+  const initialBudgetData = safelyLoadBudgetData();
+  console.log('초기 예산 데이터 로드:', initialBudgetData);
+  
+  const [budgetData, setBudgetData] = useState<BudgetData>(initialBudgetData);
+  const [selectedTab, setSelectedTab] = useState<BudgetPeriod>("daily"); // 초기값은 daily
   const [isInitialized, setIsInitialized] = useState(false);
   const [lastUpdateTime, setLastUpdateTime] = useState(0);
 

src/contexts/budget/utils/spendingCalculation.ts

@@ -13,19 +13,26 @@ export const calculateSpentAmounts = (
   
   // 오늘 지출 계산
   const todayExpenses = expenseTransactions.filter(t => {
-    if (t.date.includes('오늘')) return true;
+    if (t.date && (t.date.includes('오늘') || t.date.includes('today'))) return true;
     return false;
   });
   const dailySpent = todayExpenses.reduce((sum, t) => sum + t.amount, 0);
   
   // 이번 주 지출 계산 (단순화된 버전)
   const weeklyExpenses = expenseTransactions.filter(t => {
-    if (t.date.includes('오늘') || t.date.includes('어제') || t.date.includes('이번주')) return true;
-    return true;
+    if (t.date && (
+      t.date.includes('오늘') || 
+      t.date.includes('today') || 
+      t.date.includes('어제') || 
+      t.date.includes('yesterday') || 
+      t.date.includes('이번주') || 
+      t.date.includes('this week')
+    )) return true;
+    return false;
   });
   const weeklySpent = weeklyExpenses.reduce((sum, t) => sum + t.amount, 0);
   
-  // 이번 달 총 지출 계산
+  // 이번 달 총 지출 계산 (모든 지출 트랜잭션)
   const monthlySpent = expenseTransactions.reduce((sum, t) => sum + t.amount, 0);
 
   // 기존 예산 목표 유지 (없으면 기본값 0)
@@ -33,6 +40,12 @@ export const calculateSpentAmounts = (
   const weeklyTarget = prevBudgetData?.weekly?.targetAmount || 0;
   const monthlyTarget = prevBudgetData?.monthly?.targetAmount || 0;
 
+  console.log("예산 목표 확인:", {
+    일일: dailyTarget,
+    주간: weeklyTarget,
+    월간: monthlyTarget
+  });
+
   // 예산 데이터 업데이트
   const updatedBudget = {
     daily: {