feat(procurement): 統一採購單按鈕樣式與術語更名為「作廢」，並加強權限控管

resources/js/constants/purchase-order.ts

@@ -18,6 +18,14 @@ export const STATUS_CONFIG: Record<
     cancelled: { label: "已作廢", variant: "destructive" },
 };
 
+// 供下單/編輯頁面使用的手動狀態選項 (排除系統自動狀態)
+export const MANUAL_STATUS_OPTIONS = [
+    { value: 'draft', label: '草稿' },
+    { value: 'pending', label: '送審中' },
+    { value: 'approved', label: '已核准' },
+    { value: 'cancelled', label: '已作廢' },
+];
+
 export const STATUS_OPTIONS = Object.entries(STATUS_CONFIG).map(([value, config]) => ({
     value,
     label: (config as any).label,