Add token validation and logging for Telegram bot

src/Helpers/TelegramHelper.php

@@ -10,7 +10,17 @@ class TelegramHelper
     public static function init()
     {
         self::$botToken = $_ENV['TELEGRAM_BOT_TOKEN'] ?? '';
+        
+        if (empty(self::$botToken)) {
+            self::log("ERROR: TELEGRAM_BOT_TOKEN is empty or not set in .env");
+            throw new \Exception("Telegram Bot Token is not configured");
+        }
+        
         self::$apiURL = "https://api.telegram.org/bot" . self::$botToken . "/";
+        
+        // Log token (masked for security)
+        $maskedToken = substr(self::$botToken, 0, 10) . '...' . substr(self::$botToken, -5);
+        self::log("TelegramHelper initialized with token: $maskedToken");
     }
 
     /**