style: 移除麵包屑首頁項，側邊欄新增儀表板選單並修正選中狀態

resources/js/Layouts/AuthenticatedLayout.tsx

@@ -1,4 +1,5 @@
 import {
+    LayoutDashboard,
     ChevronRight,
     Package,
     ShoppingCart,
@@ -59,6 +60,12 @@ export default function AuthenticatedLayout({
     const [isMobileOpen, setIsMobileOpen] = useState(false);
 
     const menuItems: MenuItem[] = [
+        {
+            id: "dashboard",
+            label: "儀表板",
+            icon: <LayoutDashboard className="h-5 w-5" />,
+            route: "/",
+        },
         {
             id: "inventory-management",
             label: "商品與庫存管理",
@@ -197,7 +204,9 @@ export default function AuthenticatedLayout({
     const renderMenuItem = (item: MenuItem, level: number = 0) => {
         const hasChildren = item.children && item.children.length > 0;
         const isExpanded = expandedItems.includes(item.id);
-        const isActive = item.route ? url.startsWith(item.route) : false;
+        const isActive = item.route
+            ? (item.route === '/' ? url === '/' : url.startsWith(item.route))
+            : false;
 
         return (
             <div key={item.id} className="mb-1">