style: apply ruff format to conftest.py

Author: Coding-Dev-Tools

conftest.py

@@ -1,4 +1,5 @@
 """pytest configuration — add project src to Python path."""
+
 import site
 import sys
 from pathlib import Path
@@ -12,3 +13,4 @@
 src_dir = Path(__file__).parent / "src"
 if str(src_dir) not in sys.path:
     sys.path.insert(0, str(src_dir))
+