chore: Add redirect to home on 404 error

.gitignore

@@ -13,3 +13,4 @@ yarn-error.log
 /cypress/videos
 /cypress/screenshots
 .env.local
+docs/

src/routes/+error.svelte

@@ -0,0 +1,20 @@
+<script>
+  import { goto } from '$app/navigation';
+  import { page } from '$app/stores';
+  import { onMount } from 'svelte';
+
+  // Only redirect if it's a 404 error
+  onMount(() => {
+    if ($page.status === 404) {
+      goto('/');
+    }
+  });
+</script>
+
+{#if $page.status !== 404}
+  <div class="container mx-auto p-8">
+    <h1 class="mb-4 text-2xl font-bold">Error {$page.status}</h1>
+    <p class="mb-4">{$page.error?.message || 'An unexpected error occurred'}</p>
+    <a href="/" class="text-blue-500 hover:underline">Return to Home</a>
+  </div>
+{/if}