Potential fix for pull request finding 'Unused import'

Co-authored-by: Copilot Autofix powered by AI <223894421+github-code-quality[bot]@users.noreply.github.com>

Author: Mehdi-Bl

claude_code_api/core/security.py

@@ -3,7 +3,6 @@
 import os
 import structlog
 from fastapi import HTTPException, status
-from typing import Optional
 
 logger = structlog.get_logger()