style: 🎨 Added UV and Ruff linting

tests/test_main.py

@@ -1,9 +1,6 @@
-import pytest
 from unittest.mock import patch, mock_open, MagicMock
 import yaml
 import logging
-import atexit
-import sys
 
 from main import set_up_logging, load_config
 import config.exit_codes as ec