feat(WEB): 회계/HR/주문관리 모듈 개선 및 알림설정 리팩토링

- 회계: 거래처, 매입/매출, 입출금 상세 페이지 개선
- HR: 직원 관리 및 출퇴근 설정 기능 수정
- 주문관리: 상세폼 구조 분리 (cards, dialogs, hooks, tables)
- 알림설정: 컴포넌트 구조 단순화 및 리팩토링
- 캘린더: 헤더 및 일정 타입 개선
- 출고관리: 액션 및 타입 정의 추가

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

src/components/settings/NotificationSettings/actions.ts

@@ -109,11 +109,53 @@ export async function saveNotificationSettings(
   }
 }
 
-// ===== API → Frontend 변환 =====
+// ===== API → Frontend 변환 (기본값과 병합) =====
 function transformApiToFrontend(apiData: Record<string, unknown>): NotificationSettings {
-  // API 응답이 이미 프론트엔드 형식과 동일하다고 가정
-  // 필요시 snake_case → camelCase 변환
-  return apiData as NotificationSettings;
+  // API 응답에 soundType이 없을 수 있으므로 기본값과 병합
+  const data = apiData as Partial<NotificationSettings>;
+
+  return {
+    notice: {
+      enabled: data.notice?.enabled ?? DEFAULT_NOTIFICATION_SETTINGS.notice.enabled,
+      notice: { ...DEFAULT_NOTIFICATION_SETTINGS.notice.notice, ...data.notice?.notice },
+      event: { ...DEFAULT_NOTIFICATION_SETTINGS.notice.event, ...data.notice?.event },
+    },
+    schedule: {
+      enabled: data.schedule?.enabled ?? DEFAULT_NOTIFICATION_SETTINGS.schedule.enabled,
+      vatReport: { ...DEFAULT_NOTIFICATION_SETTINGS.schedule.vatReport, ...data.schedule?.vatReport },
+      incomeTaxReport: { ...DEFAULT_NOTIFICATION_SETTINGS.schedule.incomeTaxReport, ...data.schedule?.incomeTaxReport },
+    },
+    vendor: {
+      enabled: data.vendor?.enabled ?? DEFAULT_NOTIFICATION_SETTINGS.vendor.enabled,
+      newVendor: { ...DEFAULT_NOTIFICATION_SETTINGS.vendor.newVendor, ...data.vendor?.newVendor },
+      creditRating: { ...DEFAULT_NOTIFICATION_SETTINGS.vendor.creditRating, ...data.vendor?.creditRating },
+    },
+    attendance: {
+      enabled: data.attendance?.enabled ?? DEFAULT_NOTIFICATION_SETTINGS.attendance.enabled,
+      annualLeave: { ...DEFAULT_NOTIFICATION_SETTINGS.attendance.annualLeave, ...data.attendance?.annualLeave },
+      clockIn: { ...DEFAULT_NOTIFICATION_SETTINGS.attendance.clockIn, ...data.attendance?.clockIn },
+      late: { ...DEFAULT_NOTIFICATION_SETTINGS.attendance.late, ...data.attendance?.late },
+      absent: { ...DEFAULT_NOTIFICATION_SETTINGS.attendance.absent, ...data.attendance?.absent },
+    },
+    order: {
+      enabled: data.order?.enabled ?? DEFAULT_NOTIFICATION_SETTINGS.order.enabled,
+      salesOrder: { ...DEFAULT_NOTIFICATION_SETTINGS.order.salesOrder, ...data.order?.salesOrder },
+      purchaseOrder: { ...DEFAULT_NOTIFICATION_SETTINGS.order.purchaseOrder, ...data.order?.purchaseOrder },
+      approvalRequest: { ...DEFAULT_NOTIFICATION_SETTINGS.order.approvalRequest, ...data.order?.approvalRequest },
+    },
+    approval: {
+      enabled: data.approval?.enabled ?? DEFAULT_NOTIFICATION_SETTINGS.approval.enabled,
+      approvalRequest: { ...DEFAULT_NOTIFICATION_SETTINGS.approval.approvalRequest, ...data.approval?.approvalRequest },
+      draftApproved: { ...DEFAULT_NOTIFICATION_SETTINGS.approval.draftApproved, ...data.approval?.draftApproved },
+      draftRejected: { ...DEFAULT_NOTIFICATION_SETTINGS.approval.draftRejected, ...data.approval?.draftRejected },
+      draftCompleted: { ...DEFAULT_NOTIFICATION_SETTINGS.approval.draftCompleted, ...data.approval?.draftCompleted },
+    },
+    production: {
+      enabled: data.production?.enabled ?? DEFAULT_NOTIFICATION_SETTINGS.production.enabled,
+      safetyStock: { ...DEFAULT_NOTIFICATION_SETTINGS.production.safetyStock, ...data.production?.safetyStock },
+      productionComplete: { ...DEFAULT_NOTIFICATION_SETTINGS.production.productionComplete, ...data.production?.productionComplete },
+    },
+  };
 }
 
 // ===== Frontend → API 변환 =====