feat: openai proxying

bot.py

@@ -14,6 +14,7 @@ from aiogram.exceptions import TelegramBadRequest
 from aiogram.filters import Command, CommandStart
 from aiogram.types import Message
 from dotenv import load_dotenv
+from httpx import AsyncClient as HttpxAsyncClient
 from openai import APIConnectionError, APIError, APITimeoutError, AsyncOpenAI, NotFoundError, RateLimitError
 
 
@@ -136,11 +137,13 @@ def load_settings() -> Settings:
 
 
 settings = load_settings()
+http_client = HttpxAsyncClient(proxy=settings.telegram_proxy) if settings.telegram_proxy else None
 client = AsyncOpenAI(
     api_key=settings.api_token,
     base_url=settings.api_base_url,
     timeout=settings.api_timeout_seconds,
     max_retries=settings.api_max_retries,
+    http_client=http_client,
 )
 user_locks: dict[int, asyncio.Lock] = {}
 pending_user_messages: dict[int, list[str]] = {}