Add +error.svelte handler

src/routes/+layout.svelte

@@ -18,9 +18,7 @@
 		{ label: 'About', path: '/about', icon: IconHelp},
 	]
 
-	const activePath = $derived(page.url?.pathname ?? '');
-	const isHome = $derived(page.url.pathname === '/');
-	
+	const activePath = $derived(page.url?.pathname ?? '');	
 
 	const moreIcon = IconDots;
 </script>
@@ -31,14 +29,14 @@
 
 <header>
 	<a href="/" aria-label="OwlBoard Home" class="logo-link">
-		{#if isHome}
-			<img src={logoText} alt="OwlBoard Logo" height="55" />
-		{:else}
+		{#if page.data.title}
 			<img src={logoPlain} alt="OwlBoard Icon" height="55" />
+		{:else}
+			<img src={logoText} alt="OwlBoard Logo" height="55" />
 		{/if}
 	</a>
-	{#if !isHome}
-		<h1 class="page-title">{page?.data?.title ?? ""}</h1>
+	{#if page.data.title}
+		<h1 class="page-title">{page.data.title}</h1>
 	{/if}
 </header>