Add cross-platform prayer reminder notifications with ReminderBanner component

src/app/page.tsx

@@ -5,6 +5,7 @@ import { useAuth } from '@/context/AuthContext';
 import Login from '@/components/Login';
 import LoadingSkeleton from '@/components/LoadingSkeleton';
 import BottomNav from '@/components/BottomNav';
+import ReminderBanner from '@/components/ReminderBanner';
 import DailyEntry from '@/components/DailyEntry';
 import CalendarView from '@/components/CalendarView';
 import ReflectionsList from '@/components/ReflectionsList';
@@ -219,6 +220,7 @@ export default function Home() {
 
   return (
     <div className="min-h-screen bg-gradient-to-b from-slate-50 to-slate-100 dark:from-slate-900 dark:to-slate-800">
+      <ReminderBanner userEmail={user.email || undefined} />
       <BottomNav activeTab={activeTab} onTabChange={setActiveTab} />
 
       {activeTab === 'home' && (