Updates bot's greeting with a friendlier tone and shorter message.

src/bot/telegram-bot.ts

@@ -50,7 +50,7 @@ export class TelegramBot {
   private setupHandlers(): void {
     this.bot.start((ctx) => {
       ctx.reply(
-        'Hi! I am your personal Analyst for the Aptos ecosystem. Please share your wallet address with me, and I will provide an overview and some suggestions for your portfolio distribution.',
+        'Hi there! 👋 I’m your personal Aptos ecosystem assistant. Just share your wallet address, and I’ll give you a quick overview of your portfolio along with some tips for improving your distribution.',
       );
     });