feat: 統一全系統頁面標題樣式、優化側邊欄與實作角色成員查看功能

resources/js/Pages/PurchaseOrder/Show.tsx

@@ -2,7 +2,7 @@
  * 查看採購單詳情頁面
  */
 
-import { ArrowLeft } from "lucide-react";
+import { ArrowLeft, ShoppingCart } from "lucide-react";
 import { Button } from "@/Components/ui/button";
 import AuthenticatedLayout from "@/Layouts/AuthenticatedLayout";
 import { Head, Link } from "@inertiajs/react";
@@ -37,8 +37,11 @@ export default function ViewPurchaseOrderPage({ order }: Props) {
 
                     <div className="flex items-center justify-between mb-6">
                         <div>
-                            <h1 className="mb-2">查看採購單</h1>
-                            <p className="text-gray-600">單號：{order.poNumber}</p>
+                            <h1 className="text-2xl font-bold text-grey-0 flex items-center gap-2">
+                                <ShoppingCart className="h-6 w-6 text-[#01ab83]" />
+                                查看採購單
+                            </h1>
+                            <p className="text-gray-500 mt-1">單號：{order.poNumber}</p>
                         </div>
                         <div className="flex items-center gap-3">
                             <Link href={`/purchase-orders/${order.id}/edit`}>