feat: add admin layout with sidebar nav and sign out

src/pages/admin/AdminLayout.module.css

@@ -0,0 +1,53 @@
+.layout {
+  display: flex;
+  min-height: 100vh;
+}
+
+.sidebar {
+  width: 220px;
+  flex-shrink: 0;
+  background: var(--color-charcoal);
+  color: var(--color-cream);
+  padding: var(--space-lg) var(--space-md);
+  display: flex;
+  flex-direction: column;
+  gap: var(--space-lg);
+}
+
+.brand {
+  font-family: var(--font-script);
+  font-size: 1.5rem;
+  color: var(--color-gold);
+}
+
+.sidebar nav {
+  display: flex;
+  flex-direction: column;
+  gap: var(--space-sm);
+}
+
+.navLink {
+  color: var(--color-cream);
+  text-decoration: none;
+  padding: var(--space-sm);
+}
+
+.navLinkActive {
+  color: var(--color-gold);
+  font-weight: bold;
+}
+
+.signOut {
+  margin-top: auto;
+  background: none;
+  border: 1px solid var(--color-gold);
+  color: var(--color-cream);
+  padding: var(--space-sm);
+  cursor: pointer;
+}
+
+.content {
+  flex: 1;
+  padding: var(--space-xl) var(--space-lg);
+  background: var(--color-cream-alt);
+}

src/pages/admin/AdminLayout.test.tsx

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+import { render, screen } from '@testing-library/react'
+import userEvent from '@testing-library/user-event'
+import { MemoryRouter, Routes, Route } from 'react-router-dom'
+import { describe, it, expect, vi, beforeEach } from 'vitest'
+
+const signOutMock = vi.fn()
+const navigateMock = vi.fn()
+
+vi.mock('../../lib/supabase', () => ({
+  supabase: { auth: { signOut: (...args: unknown[]) => signOutMock(...args) } },
+}))
+
+vi.mock('react-router-dom', async () => {
+  const actual = await vi.importActual('react-router-dom')
+  return { ...actual, useNavigate: () => navigateMock }
+})
+
+import AdminLayout from './AdminLayout'
+
+function renderLayout() {
+  return render(
+    <MemoryRouter initialEntries={['/admin/products']}>
+      <Routes>
+        <Route element={<AdminLayout />}>
+          <Route path="/admin/products" element={<p>Products content</p>} />
+        </Route>
+      </Routes>
+    </MemoryRouter>,
+  )
+}
+
+describe('AdminLayout', () => {
+  beforeEach(() => {
+    signOutMock.mockReset().mockResolvedValue({ error: null })
+    navigateMock.mockReset()
+  })
+
+  it('renders nav links for every admin section and the outlet content', () => {
+    renderLayout()
+    expect(screen.getByRole('link', { name: /products/i })).toBeInTheDocument()
+    expect(screen.getByRole('link', { name: /services/i })).toBeInTheDocument()
+    expect(screen.getByRole('link', { name: /schedule/i })).toBeInTheDocument()
+    expect(screen.getByRole('link', { name: /bookings/i })).toBeInTheDocument()
+    expect(screen.getByRole('link', { name: /inquiries/i })).toBeInTheDocument()
+    expect(screen.getByText('Products content')).toBeInTheDocument()
+  })
+
+  it('signs out and navigates to the login page', async () => {
+    renderLayout()
+    await userEvent.click(screen.getByRole('button', { name: /sign out/i }))
+    expect(signOutMock).toHaveBeenCalled()
+    expect(navigateMock).toHaveBeenCalledWith('/admin/login')
+  })
+})

src/pages/admin/AdminLayout.tsx

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+import { NavLink, Outlet, useNavigate } from 'react-router-dom'
+import { supabase } from '../../lib/supabase'
+import styles from './AdminLayout.module.css'
+
+const NAV_ITEMS = [
+  { to: '/admin/products', label: 'Products' },
+  { to: '/admin/services', label: 'Services' },
+  { to: '/admin/schedule', label: 'Schedule' },
+  { to: '/admin/bookings', label: 'Bookings' },
+  { to: '/admin/inquiries', label: 'Inquiries' },
+]
+
+function AdminLayout() {
+  const navigate = useNavigate()
+
+  async function handleSignOut() {
+    await supabase.auth.signOut()
+    navigate('/admin/login')
+  }
+
+  return (
+    <div className={styles.layout}>
+      <aside className={styles.sidebar}>
+        <p className={styles.brand}>Braids by Mira</p>
+        <nav>
+          {NAV_ITEMS.map((item) => (
+            <NavLink
+              key={item.to}
+              to={item.to}
+              className={({ isActive }) => (isActive ? `${styles.navLink} ${styles.navLinkActive}` : styles.navLink)}
+            >
+              {item.label}
+            </NavLink>
+          ))}
+        </nav>
+        <button type="button" className={styles.signOut} onClick={handleSignOut}>
+          Sign out
+        </button>
+      </aside>
+      <main className={styles.content}>
+        <Outlet />
+      </main>
+    </div>
+  )
+}
+
+export default AdminLayout