feat: 倉庫業務屬性、庫存成本追蹤與採購單功能更新

1. 倉庫管理：新增業務類型 (Owned/External/Customer) 與車牌資訊與司機欄位。
2. 庫存管理：實作成本追蹤 (unit_cost, total_value)，更新列表與撥補單顯示。
3. 採購單：新增採購日期 (order_date)，調整欄位名稱與順序。
4. 前端優化：更新相關 TS Type 定義與 UI 顯示。

resources/js/hooks/usePurchaseOrderForm.ts

@@ -4,7 +4,7 @@
 
 import { useState, useEffect } from "react";
 import type { PurchaseOrder, PurchaseOrderItem, Supplier, PurchaseOrderStatus } from "@/types/purchase-order";
-import { calculateSubtotal } from "@/utils/purchase-order";
+import { calculateSubtotal, getTodayDate } from "@/utils/purchase-order";
 
 interface UsePurchaseOrderFormProps {
     order?: PurchaseOrder;
@@ -14,6 +14,7 @@ interface UsePurchaseOrderFormProps {
 export function usePurchaseOrderForm({ order, suppliers }: UsePurchaseOrderFormProps) {
     const [supplierId, setSupplierId] = useState(order?.supplierId || "");
     const [expectedDate, setExpectedDate] = useState(order?.expectedDate || "");
+    const [orderDate, setOrderDate] = useState(order?.orderDate || getTodayDate());
     const [items, setItems] = useState<PurchaseOrderItem[]>(order?.items || []);
     const [notes, setNotes] = useState(order?.remark || "");
     const [status, setStatus] = useState<PurchaseOrderStatus>(order?.status || "draft");
@@ -32,6 +33,7 @@ export function usePurchaseOrderForm({ order, suppliers }: UsePurchaseOrderFormP
         if (order) {
             setSupplierId(order.supplierId);
             setExpectedDate(order.expectedDate);
+            setOrderDate(order.orderDate || getTodayDate());
             setItems(order.items || []);
             setNotes(order.remark || "");
             setStatus(order.status);
@@ -52,6 +54,7 @@ export function usePurchaseOrderForm({ order, suppliers }: UsePurchaseOrderFormP
     const resetForm = () => {
         setSupplierId("");
         setExpectedDate("");
+        setOrderDate(getTodayDate());
         setItems([]);
         setNotes("");
         setStatus("draft");
@@ -159,6 +162,7 @@ export function usePurchaseOrderForm({ order, suppliers }: UsePurchaseOrderFormP
         // State
         supplierId,
         expectedDate,
+        orderDate,
         items,
         notes,
         status,
@@ -174,6 +178,7 @@ export function usePurchaseOrderForm({ order, suppliers }: UsePurchaseOrderFormP
         // Setters
         setSupplierId,
         setExpectedDate,
+        setOrderDate,
         setNotes,
         setStatus,
         setWarehouseId,