Update environment variables, Docker configuration, and dependencies; refactor token management and chat agent logic. Added FastAPI server setup and improved message handling in GigaChat client.

services/cache_service.py

@@ -12,7 +12,8 @@ class CacheService:
     """Сервис для работы с Redis кэшем."""
 
     def __init__(self, redis_url: Optional[str] = None):
-        self.redis_url = redis_url or "redis://localhost:6379/0"
+        import os
+        self.redis_url = redis_url or os.getenv("REDIS_URL", "redis://localhost:6379/0")
         self._client: Optional[redis.Redis] = None
 
     async def _get_client(self) -> redis.Redis: