- Added rate limiting configuration for authentication endpoints, allowing customizable request limits via environment variables. - Updated authentication flow to utilize HttpRequest for cookie management, ensuring secure handling of refresh tokens. - Introduced a new endpoint to retrieve user subscription details. - Enhanced the handling of Telegram bot token validation to prevent errors with empty tokens. - Updated the application to serialize enums as strings for better documentation and compatibility with TypeScript. - Improved test coverage for new features and adjustments in command handlers.