Refactor useBudgetState into smaller files

Refactors the `useBudgetState.ts` file into smaller, more manageable files to improve code organization and maintainability. No functionality is changed.

src/contexts/budget/hooks/useBudgetDataState.ts

@@ -0,0 +1,69 @@
+
+import { useState, useEffect, useCallback } from 'react';
+import { BudgetData, BudgetPeriod } from '../types';
+import { 
+  loadBudgetDataFromStorage, 
+  saveBudgetDataToStorage, 
+  clearAllBudgetData 
+} from '../storageUtils';
+import { toast } from '@/components/ui/use-toast';
+import { 
+  calculateUpdatedBudgetData,
+  calculateSpentAmounts
+} from '../budgetUtils';
+
+// 예산 데이터 상태 관리 훅
+export const useBudgetDataState = (transactions: any[]) => {
+  const [budgetData, setBudgetData] = useState<BudgetData>(loadBudgetDataFromStorage());
+  const [selectedTab, setSelectedTab] = useState<BudgetPeriod>("daily");
+
+  // 지출 금액 업데이트
+  useEffect(() => {
+    // 스토리지에서 데이터 로드
+    const loadedBudgetData = loadBudgetDataFromStorage();
+    
+    // 지출 금액 업데이트
+    const updatedBudgetData = calculateSpentAmounts(transactions, loadedBudgetData);
+    
+    // 상태 및 스토리지 모두 업데이트
+    setBudgetData(updatedBudgetData);
+    saveBudgetDataToStorage(updatedBudgetData);
+    
+    // 로컬 이벤트 발생 (다른 컴포넌트에서 변경 감지하도록)
+    window.dispatchEvent(new Event('budgetDataUpdated'));
+  }, [transactions]);
+
+  // 예산 목표 업데이트 함수
+  const handleBudgetGoalUpdate = useCallback((
+    type: BudgetPeriod, 
+    amount: number, 
+    newCategoryBudgets?: Record<string, number>
+  ) => {
+    // 월간 예산 직접 업데이트 (카테고리 예산이 없는 경우)
+    if (!newCategoryBudgets) {
+      const updatedBudgetData = calculateUpdatedBudgetData(budgetData, type, amount);
+      setBudgetData(updatedBudgetData);
+      saveBudgetDataToStorage(updatedBudgetData);
+      
+      toast({
+        title: "목표 업데이트 완료",
+        description: `${type === 'daily' ? '일일' : type === 'weekly' ? '주간' : '월간'} 목표가 ${amount.toLocaleString()}원으로 설정되었습니다.`
+      });
+    }
+  }, [budgetData]);
+
+  // 예산 데이터 초기화 함수
+  const resetBudgetData = useCallback(() => {
+    clearAllBudgetData();
+    setBudgetData(loadBudgetDataFromStorage());
+    console.log('예산 데이터가 초기화되었습니다.');
+  }, []);
+
+  return {
+    budgetData,
+    selectedTab,
+    setSelectedTab,
+    handleBudgetGoalUpdate,
+    resetBudgetData
+  };
+};