fix: rename mock variable to avoid ESLint react-hooks/rules-of-hooks false positive

Renamed useAdminAuthMock to adminAuthMock in ProtectedRoute.test.tsx to prevent
ESLint from flagging it as an invalid hook call. The 'use' prefix naming heuristic
was causing a react-hooks/rules-of-hooks rule violation, though it was not actually
a hook call context. This change maintains all test behavior while passing lint.

src/components/ProtectedRoute.test.tsx

@@ -2,8 +2,8 @@ import { render, screen } from '@testing-library/react'
 import { MemoryRouter, Routes, Route } from 'react-router-dom'
 import { describe, it, expect, vi } from 'vitest'
 
-const useAdminAuthMock = vi.fn()
-vi.mock('../hooks/useAdminAuth', () => ({ default: () => useAdminAuthMock() }))
+const adminAuthMock = vi.fn()
+vi.mock('../hooks/useAdminAuth', () => ({ default: () => adminAuthMock() }))
 
 import ProtectedRoute from './ProtectedRoute'
 
@@ -22,20 +22,20 @@ function renderWithRoute() {
 
 describe('ProtectedRoute', () => {
   it('renders nothing while loading', () => {
-    useAdminAuthMock.mockReturnValue({ session: null, loading: true })
+    adminAuthMock.mockReturnValue({ session: null, loading: true })
     renderWithRoute()
     expect(screen.queryByText('Products page')).not.toBeInTheDocument()
     expect(screen.queryByText('Login page')).not.toBeInTheDocument()
   })
 
   it('redirects to /admin/login when there is no session', () => {
-    useAdminAuthMock.mockReturnValue({ session: null, loading: false })
+    adminAuthMock.mockReturnValue({ session: null, loading: false })
     renderWithRoute()
     expect(screen.getByText('Login page')).toBeInTheDocument()
   })
 
   it('renders the protected content when there is a session', () => {
-    useAdminAuthMock.mockReturnValue({ session: { user: { id: 'admin' } }, loading: false })
+    adminAuthMock.mockReturnValue({ session: { user: { id: 'admin' } }, loading: false })
     renderWithRoute()
     expect(screen.getByText('Products page')).toBeInTheDocument()
   })