feat: pre-fill first/last name on setup page from user's registered name

src/routes/(protected)/(user)/account/setup/+page.svelte

@@ -17,10 +17,18 @@
 	import type { PageProps } from './$types';
 
 	let { data }: PageProps = $props();
-	$inspect(data);
 
+	const userFullName = data.user?.name;
+	let firstName = $state(splitName(userFullName).first);
+	let lastName = $state(splitName(userFullName).last);
 	let phoneNumber = $state('');
 
+	function splitName(fullName: string | null | undefined): { first: string; last: string } {
+		if (!fullName) return { first: '', last: '' };
+		const parts = fullName.trim().split(/\s+/);
+		return { first: parts[0] ?? '', last: parts.slice(1).join(' ') };
+	}
+
 	function handlePhoneInput(event: Event) {
 		const input = event.target as HTMLInputElement;
 		phoneNumber = clientFormatPhoneNumber(input.value);
@@ -38,8 +46,8 @@
 		<p class="mx-auto text-center my-4">{data.user?.email}</p>
 		<div class="flex flex-col">
             <input type="text" name="userId" value={data.user?.id} class="hidden"/>
-			<input type="text" name="firstName" placeholder="First Name" class="my-2" />
+			<input type="text" name="firstName" placeholder="First Name" class="my-2" bind:value={firstName} />
-			<input type="text" name="lastName" placeholder="Last Name" class="my-2" />
+			<input type="text" name="lastName" placeholder="Last Name" class="my-2" bind:value={lastName} />
 			<input
 				type="tel"
 				name="phoneNumber"