feat: add devices page with goal input and step log

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

web/src/lib/api/devices.remote.ts

@@ -0,0 +1,17 @@
+import { query, getRequestEvent } from '$app/server';
+import { env } from '$env/dynamic/private';
+
+const SERVER_URL = env.SERVER_URL || 'http://localhost:8080';
+
+export const listDevices = query(async () => {
+	const { request } = getRequestEvent();
+
+	const res = await fetch(`${SERVER_URL}/devices`, {
+		headers: {
+			cookie: request.headers.get('cookie') ?? ''
+		}
+	});
+
+	if (!res.ok) return [];
+	return res.json();
+});