Fix budget display issues

The budget was not being displayed correctly in the spending and analytics screens, as well as the weekly and monthly views on the home screen. This commit addresses these issues.

src/contexts/budget/budgetUtils.ts

@@ -67,14 +67,48 @@ export const calculateUpdatedBudgetData = (
         remainingAmount: Math.max(0, amount - prevBudgetData.monthly.spentAmount)
       }
     };
-  } else {
-    const remainingAmount = Math.max(0, amount - prevBudgetData[type].spentAmount);
+  } else if (type === 'weekly') {
+    // 주간 예산이 설정되면 월간 예산도 자동 계산
+    const monthlyAmount = Math.round(amount * 4.3);
+    const dailyAmount = Math.round(amount / 7);
+    
     return {
-      ...prevBudgetData,
-      [type]: {
-        ...prevBudgetData[type],
+      daily: {
+        targetAmount: dailyAmount,
+        spentAmount: prevBudgetData.daily.spentAmount,
+        remainingAmount: Math.max(0, dailyAmount - prevBudgetData.daily.spentAmount)
+      },
+      weekly: {
         targetAmount: amount,
-        remainingAmount: remainingAmount
+        spentAmount: prevBudgetData.weekly.spentAmount,
+        remainingAmount: Math.max(0, amount - prevBudgetData.weekly.spentAmount)
+      },
+      monthly: {
+        targetAmount: monthlyAmount,
+        spentAmount: prevBudgetData.monthly.spentAmount,
+        remainingAmount: Math.max(0, monthlyAmount - prevBudgetData.monthly.spentAmount)
+      }
+    };
+  } else {
+    // 일일 예산이 설정되면 주간/월간 예산도 자동 계산
+    const weeklyAmount = Math.round(amount * 7);
+    const monthlyAmount = Math.round(amount * 30);
+    
+    return {
+      daily: {
+        targetAmount: amount,
+        spentAmount: prevBudgetData.daily.spentAmount,
+        remainingAmount: Math.max(0, amount - prevBudgetData.daily.spentAmount)
+      },
+      weekly: {
+        targetAmount: weeklyAmount,
+        spentAmount: prevBudgetData.weekly.spentAmount,
+        remainingAmount: Math.max(0, weeklyAmount - prevBudgetData.weekly.spentAmount)
+      },
+      monthly: {
+        targetAmount: monthlyAmount,
+        spentAmount: prevBudgetData.monthly.spentAmount,
+        remainingAmount: Math.max(0, monthlyAmount - prevBudgetData.monthly.spentAmount)
       }
     };
   }