fix: apply isort formatting to fix CI linting

Applied isort to properly sort all imports according to PEP8:
- Standard library imports first
- Third-party imports second
- Local imports last
- Alphabetical ordering within each group

All tests still passing after import reordering.

utils/file_utils.py

@@ -3,7 +3,7 @@ File reading utilities
 """
 
 from pathlib import Path
-from typing import List, Tuple, Optional
+from typing import List, Optional, Tuple
 
 
 def read_file_content(file_path: str) -> str: