Implement stores and refills, improve testing

packages/web/src/app/(dashboard)/__tests__/loading.test.tsx

@@ -0,0 +1,11 @@
+import { describe, it, expect } from 'vitest';
+import { render, container } from '@testing-library/react';
+
+import DashboardLoading from '../loading';
+
+describe('DashboardLoading', () => {
+  it('renders a loading spinner', () => {
+    const { container: c } = render(<DashboardLoading />);
+    expect(c.querySelector('.animate-spin')).toBeInTheDocument();
+  });
+});