refactor: project architecture refactor, container splitting

scripts/send_premium_traffic_warning_test.py

@@ -11,6 +11,9 @@ No default Telegram ID is embedded in this script.
 import asyncio
 import os
 import sys
+from pathlib import Path
+
+sys.path.insert(0, str(Path(__file__).resolve().parents[1] / "backend"))
 
 from aiogram import Bot
 from aiogram.types import InlineKeyboardButton, InlineKeyboardMarkup, WebAppInfo