Nickname added

src/handlers/adminUserHandler.js

@@ -31,7 +31,6 @@ export default class AdminUserHandler {
         GROUP BY u.id
         ORDER BY u.created_at DESC
       `);
-      
       if (users.length === 0) {
         await this.bot.sendMessage(msg.chat.id, 'No users registered yet.');
         return;
@@ -54,7 +53,7 @@ export default class AdminUserHandler {
       // Create inline keyboard with user list
       const keyboard = {
         inline_keyboard: users.map(user => [{
-          text: `ID: ${user.telegram_id} | Balance: $${user.total_balance || 0}`,
+          text: `ID: ${user.telegram_id} | Nickname: ${user.username? "@" + user.username: "None"} | Balance: $${user.total_balance || 0}`,
           callback_data: `view_user_${user.telegram_id}`
         }])
       };

src/handlers/userHandler.js

@@ -57,10 +57,11 @@ export default class UserHandler {
   async handleStart(msg) {
     const chatId = msg.chat.id;
     const userId = msg.from.id;
+    const username = msg.chat.username;
 
     try {
       // Create user profile
-      await User.create(userId);
+      await User.create(userId, username);
       
       const keyboard = {
         reply_markup: {