fix: TypeScript 타입 오류 수정 및 설정 페이지 추가

- BOMItem Omit 타입 시그니처 통일 (useTemplateManagement, SectionsTab, ItemMasterContext)
- HeadersInit → Record<string, string> 타입 변경
- Zustand useShallow 마이그레이션 (zustand/react/shallow)
- DataTable, ListPageTemplate 제네릭 타입 제약 추가
- 설정 관리 페이지 추가 (직급, 직책, 휴가정책, 근무일정, 권한)
- HR 관리 페이지 추가 (급여, 휴가)
- 단가관리 페이지 리팩토링

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

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

src/hooks/useItemList.ts

@@ -8,7 +8,7 @@
 'use client';
 
 import { useState, useEffect, useCallback, useRef } from 'react';
-import type { ItemMaster } from '@/types/item';
+import type { ItemMaster, ItemType, PartType } from '@/types/item';
 import type { CustomTabResponse, TabColumnResponse } from '@/types/item-master-api';
 import { itemMasterApi } from '@/lib/api/item-master';
 
@@ -133,8 +133,8 @@ export function useItemList(): UseItemListResult {
     id: String(itemId ?? ''),
     itemCode: (item.code ?? item.item_code ?? '') as string,
     itemName: (item.name ?? item.item_name ?? '') as string,
-    itemType: (item.type_code ?? item.item_type ?? '') as string,
-    partType: item.part_type as string | undefined,
+    itemType: (item.type_code ?? item.item_type ?? '') as ItemType,
+    partType: item.part_type as PartType | undefined,
     unit: (item.unit ?? '') as string,
     specification: (item.specification ?? '') as string,
     // is_active가 null/undefined면 deleted_at 기준으로 판단 (삭제 안됐으면 활성)
@@ -146,6 +146,7 @@ export function useItemList(): UseItemListResult {
     salesPrice: (item.sales_price ?? 0) as number,
     purchasePrice: (item.purchase_price ?? 0) as number,
     currentRevision: (item.current_revision ?? 0) as number,
+    isFinal: Boolean(item.is_final ?? false),
     createdAt: (item.created_at ?? '') as string,
     updatedAt: (item.updated_at ?? '') as string,
   };