fix: wallet generation crash - WalletUtils not defined, registerRoutes not called

- createHandler.js: replace WalletUtils.getNetworkName (undefined) with
  WalletHelpers.getNetworkName, add import
- index.js: call registerRoutes() to register bot message handlers
  (was imported as side-effect but function never called)
- messageRouter.js: remove debug logging

src/handlers/userHandlers/wallet/createHandler.js

@@ -4,6 +4,7 @@ import Validators from '../../../utils/validators.js';
 import bot from '../../../context/bot.js';
 import UserService from '../../../services/userService.js';
 import logger from '../../../utils/logger.js';
+import WalletHelpers from './helpers.js';
 
 export default class CreateHandler {
     static async handleAddWallet(callbackQuery) {
@@ -61,9 +62,7 @@ export default class CreateHandler {
                 const walletResult = await WalletService.createWallet(user.id, walletType);
                 if (!walletResult?.address) throw new Error('Failed to generate wallet address');
 
-                const network = WalletService.getNetworkName
-                    ? WalletService.getNetworkName(walletType)
-                    : WalletUtils.getNetworkName(walletType);
+                const network = WalletHelpers.getNetworkName(walletType);
 
                 let message = `✅ New wallet generated successfully!\n\n`;
                 message += `Type: ${walletType}\nNetwork: ${network}\n`;