feat(lotto): 구매탭에 자동 채점 일치수 배지 + 4등↑ 플래그

src/pages/lotto/hooks/usePurchases.js

@@ -1,6 +1,7 @@
 import { useCallback, useEffect, useState } from 'react';
 import {
     getPurchases, getPurchaseStats, addPurchase, updatePurchase, deletePurchase,
+    bulkPurchase as apiBulkPurchase,
 } from '../../../api';
 import { emptyPurchaseForm } from '../lottoUtils';
 
@@ -94,6 +95,12 @@ export default function usePurchases() {
         } catch { refreshPurchases(); }
     }, [refreshPurchases]);
 
+    const handleBulkPurchase = useCallback(async (params) => {
+        const result = await apiBulkPurchase(params);
+        await refreshPurchases();
+        return result;
+    }, [refreshPurchases]);
+
     useEffect(() => { refreshPurchases(); }, []); // eslint-disable-line react-hooks/exhaustive-deps
 
     return {
@@ -101,5 +108,6 @@ export default function usePurchases() {
         purchaseFormOpen, purchaseForm, purchaseFormSaving, purchaseFormError, purchaseEditId,
         handlePurchaseFormOpen, handlePurchaseFormClose, handlePurchaseFormChange,
         handlePurchaseFormSubmit, handlePurchaseEditStart, handlePurchaseDelete,
+        handleBulkPurchase,
     };
 }