fix: replace dynamic auth import with static import to silence Vite warning

src/App.tsx

@@ -1,6 +1,6 @@
 import React, { useState, useEffect } from 'react';
 import { User, Device, LabTemplate, Booking, LogEntry, QuickLink } from './types';
-import { authFetch, getToken, getStoredUser, clearSession } from './lib/auth';
+import { authFetch, getToken, getStoredUser, clearSession, saveSession } from './lib/auth';
 import Header, { GhostGridLogo } from './components/Header';
 import Dashboard from './components/Dashboard';
 import BookingCalendar from './components/BookingCalendar';
@@ -89,7 +89,6 @@ export default function App() {
           const res = await fetch('/api/auth/me', { headers: { Authorization: `Bearer ${urlToken}` } });
           if (res.ok) {
             const user = await res.json();
-            const { saveSession } = await import('./lib/auth');
             saveSession(urlToken, user);
             setCurrentUser(user);
           } else {