fix: resolve notification ui bugs, audio playback, and team deletion

- Fixed audio playback by rendering a hidden audio tag to comply with browser policies.

- Renamed DELETE /notifications to /notifications/clear-all to prevent route conflicts.

- Notifications badge now clears automatically when the tray is opened.

- Translated notification types to Portuguese (SUCESSO, AVISO, ERRO, INFO).

- Implemented team deletion functionality for Admins.

backend/index.js

@@ -551,7 +551,7 @@ apiRouter.delete('/notifications/:id', async (req, res) => {
   }
 });
 
-apiRouter.delete('/notifications', async (req, res) => {
+apiRouter.delete('/notifications/clear-all', async (req, res) => {
   try {
     await pool.query(
       'DELETE FROM notifications WHERE user_id = ?',
@@ -918,6 +918,25 @@ apiRouter.put('/teams/:id', requireRole(['admin', 'owner', 'super_admin']), asyn
   }
 });
 
+apiRouter.delete('/teams/:id', requireRole(['admin', 'owner', 'super_admin']), async (req, res) => {
+  try {
+    const [existing] = await pool.query('SELECT tenant_id FROM teams WHERE id = ?', [req.params.id]);
+    if (existing.length === 0) return res.status(404).json({ error: 'Not found' });
+    if (req.user.role !== 'super_admin' && existing[0].tenant_id !== req.user.tenant_id) {
+      return res.status(403).json({ error: 'Acesso negado.' });
+    }
+
+    // Set users team_id to NULL to prevent orphan foreign key issues if constrained
+    await pool.query('UPDATE users SET team_id = NULL WHERE team_id = ?', [req.params.id]);
+    await pool.query('DELETE FROM teams WHERE id = ?', [req.params.id]);
+    
+    res.json({ message: 'Team deleted successfully.' });
+  } catch (error) {
+    console.error('Delete team error:', error);
+    res.status(500).json({ error: error.message });
+  }
+});
+
 
 
 apiRouter.post('/tenants', requireRole(['super_admin']), async (req, res) => {