feat: [재고현황] 최종 입출고 일자 컬럼 추가 + 최신 거래 기준 정렬

- StockItem에 lastTransactionDate 필드 추가 (last_receipt_date/last_issue_date 중 최신)
- 테이블에 '최종 입출고' 컬럼 추가
- 기본 정렬: 최종 입출고 일자 내림차순 (최신 거래가 위)

src/components/material/StockStatus/StockStatusList.tsx

@@ -152,6 +152,11 @@ export function StockStatusList() {
     }
 
     return true;
+  }).sort((a, b) => {
+    // 최종 입출고 일자 내림차순 (최신 거래가 위)
+    const dateA = a.lastTransactionDate === '-' ? '' : a.lastTransactionDate;
+    const dateB = b.lastTransactionDate === '-' ? '' : b.lastTransactionDate;
+    return dateB.localeCompare(dateA);
   });
 
   // ===== 행 클릭 → 플로팅 액션 메뉴 =====
@@ -329,6 +334,7 @@ export function StockStatusList() {
     { key: 'safetyStock', label: '안전재고', className: 'w-[80px] text-center', copyable: true },
     { key: 'maxStock', label: '최대재고', className: 'w-[80px] text-center', copyable: true },
     { key: 'wipQty', label: '재공품', className: 'w-[80px] text-center', copyable: true },
+    { key: 'lastTransactionDate', label: '최종 입출고', className: 'w-[100px] text-center', sortable: true, copyable: true },
     { key: 'useStatus', label: '상태', className: 'w-[80px] text-center' },
   ], []);
 
@@ -361,6 +367,7 @@ export function StockStatusList() {
         <TableCell className="text-center">{item.safetyStock}</TableCell>
         <TableCell className="text-center">{item.maxStock}</TableCell>
         <TableCell className="text-center">{item.wipQty}</TableCell>
+        <TableCell className="text-center text-xs text-muted-foreground">{item.lastTransactionDate}</TableCell>
         <TableCell className="text-center">
           <span className={item.useStatus === 'inactive' ? 'text-gray-400' : ''}>
             {USE_STATUS_LABELS[item.useStatus]}

src/components/material/StockStatus/actions.ts

@@ -143,6 +143,13 @@ function transformApiToListItem(data: ItemApiData): StockItem {
     lotCount: hasStock ? (stock.lot_count || 0) : 0,
     lotDaysElapsed: hasStock ? (stock.days_elapsed || 0) : 0,
     status: hasStock ? stock.status : null,
+    lastTransactionDate: (() => {
+      if (!hasStock) return '-';
+      const receipt = stock.last_receipt_date || '';
+      const issue = stock.last_issue_date || '';
+      if (receipt && issue) return receipt > issue ? receipt : issue;
+      return receipt || issue || '-';
+    })(),
     useStatus: data.is_active === false ? 'inactive' : 'active',
     location: hasStock ? (stock.location || '-') : '-',
     hasStock,

src/components/material/StockStatus/types.ts

@@ -76,6 +76,7 @@ export interface StockItem {
   lotDaysElapsed: number;     // Stock.days_elapsed (없으면 0)
   status: StockStatusType | null;  // Stock.status (없으면 null)
   useStatus: 'active' | 'inactive';  // 사용/미사용 상태
+  lastTransactionDate: string; // 최종 입출고 일자 (last_receipt_date, last_issue_date 중 최신)
   location: string;           // Stock.location (없으면 '-')
   hasStock: boolean;          // Stock 데이터 존재 여부
 }