refac

src/lib/components/chat/Overview/Node.svelte

@@ -23,7 +23,9 @@
 					className={'size-5 -translate-y-[1px]'}
 				/>
 				<div class="ml-2">
-					<div class="text-xs text-black dark:text-white font-medium">{data.user.name}</div>
+					<div class="text-xs text-black dark:text-white font-medium">
+						{data?.user?.name ?? 'User'}
+					</div>
 
 					{#if data?.message?.error}
 						<div class="text-red-500 line-clamp-2 text-xs mt-0.5">{data.message.error.content}</div>
@@ -40,7 +42,9 @@
 				/>
 
 				<div class="ml-2">
-					<div class="text-xs text-black dark:text-white font-medium">{data.model.name}</div>
+					<div class="text-xs text-black dark:text-white font-medium">
+						{data?.model?.name ?? 'Assistant'}
+					</div>
 
 					{#if data?.message?.error}
 						<div class="text-red-500 line-clamp-2 text-xs mt-0.5">