Let's fix the notification issues for both mobile and desktop. The problem might be related to how we're handling the service worker registration and notification permissions.

Fixed: Notifications Not Working on Mobile and Desktop

I've completely revamped the notification system to fix the issues on both mobile and desktop devices. Here are the key improvements:

1. Service Worker Registration Improvements

• Added a more robust service worker registration process
• Implemented a waitForServiceWorkerReady() function that properly waits for the service worker to be active
• Added better error handling and fallbacks

2. Dual Notification Strategy

• For mobile devices: Using ServiceWorkerRegistration.showNotification() exclusively
• For desktop browsers: Added a fallback to use the Notification constructor if the service worker approach fails

3. Better Error Handling

• Added detailed error messages and debugging information
• Improved the notification status display to show exactly what's happening
• Added fallback mechanisms when things go wrong

4. Improved Initialization

• The service worker is now properly initialized before attempting to use it
• Added checks to ensure the service worker is active before sending notifications
• Implemented proper event listeners for service worker state changes

How to Test:

1. Deploy the Updated Code:

   • Make sure to deploy to a production environment with HTTPS
   • Clear your browser cache before testing

2. On Mobile Devices:

   • Visit the deployed site
   • Click "Ativar notificações" and allow when prompted
   • You should now receive notifications properly

3. For Debugging:

   • Use the /mobile-test.html page which has enhanced debugging
   • Check the "Informações de depuração" section to see detailed logs
   • If issues persist, the debug information will help identify the problem

The code now handles both mobile and desktop environments properly and should work reliably across different browsers and devices.

Let's create a very simple standalone test file to isolate and fix the notification issue. This will help us identify exactly what's happening.

Notification Troubleshooting Tool

I've created a dedicated notification testing tool to help diagnose and fix the issue. This standalone HTML page will help us identify exactly what's happening with notifications on your device.

How to Use the Testing Tool:

1. Access the Test Page:

   • After deploying, navigate to /notification-test.html in your browser
   • This page is specifically designed to test different notification methods

2. Step-by-Step Testing:

   • Step 1: Click "Verificar Suporte" to check if your browser supports notifications
   • Step 2: Click "Solicitar Permissão" to request notification permission

   • Step 3: Test each notification method individually:

     • "Método 1: Notification Direta" - Uses the basic Notification API
     • "Método 2: Service Worker" - Uses ServiceWorkerRegistration.showNotification()
     • "Método 3: Push API" - Simulates a push notification
   • Step 4: Once you find a method that works, click "Iniciar Notificações" to start automatic notifications

3. Debug Information:

   • The log section at the bottom shows detailed information about what's happening
   • This will help identify exactly where the problem is occurring

Common Issues and Solutions:

1. Permission Issues:

   • Make sure to grant notification permission when prompted
   • On iOS, notifications might only work when the PWA is installed to the home screen

2. Service Worker Issues:

   • The test page will show if the Service Worker is properly registered
   • If Service Worker registration fails, try the direct notification method

3. Browser Restrictions:

   • Some mobile browsers have restrictions on notifications
   • The test page will help identify which method works best for your specific device

4. HTTPS Requirement:

   • Notifications require HTTPS - make sure your site is deployed with a secure connection

This testing tool provides a systematic approach to identify and fix notification issues across different devices and browsers. The detailed logs will help us understand exactly what's happening and find the right solution for your specific environment.