The login window now closes automatically after a successful login

src/main/java/LoginGUI.java

@@ -55,6 +55,8 @@ public class LoginGUI extends JFrame implements ActionListener {
         if (authenticateUser(username, password)) {
             JOptionPane.showMessageDialog(this, "Login successful!");
             // Perform actions after successful login
+            
+            dispose();
         } else {
             JOptionPane.showMessageDialog(this, "Invalid username or password", "Login Error", JOptionPane.ERROR_MESSAGE);
         }