more boilerplate and dev environment

frontend/src/routes/+page.svelte

@@ -1,2 +1,25 @@
-<h1>Welcome to SvelteKit</h1>
-<p>Visit <a href="https://svelte.dev/docs/kit">svelte.dev/docs/kit</a> to read the documentation</p>
+<script>
+	import { goto } from '$app/navigation';
+	import { auth } from '$lib/stores/auth.js';
+
+	let userId = $state('');
+
+	function enterApp() {
+		if (userId.trim()) {
+			auth.login(userId.trim());
+			goto('/dashboard');
+		}
+	}
+</script>
+
+<h1>OwOrganizer</h1>
+
+<p>Enter your user ID to open the app.</p>
+
+<form onsubmit={(e) => { e.preventDefault(); enterApp(); }}>
+	<label>
+		User ID
+		<input type="text" bind:value={userId} placeholder="e.g., alice" />
+	</label>
+	<button type="submit">Open App</button>
+</form>