Potential fix for pull request finding

Co-authored-by: Copilot Autofix powered by AI <175728472+Copilot@users.noreply.github.com>

Author: leestott

tests/conftest.py

@@ -7,10 +7,12 @@
 
 import pytest
 
-sys.path.insert(0, str(Path(__file__).resolve().parents[1]))
+project_root = Path(__file__).resolve().parents[1]
+if str(project_root) not in sys.path:
+    sys.path.insert(0, str(project_root))
 
-from src.client import CompletionResult
-from src.config import EvalConfig, EndpointConfig, PricingConfig
+from src.client import CompletionResult  # noqa: E402
+from src.config import EvalConfig, EndpointConfig, PricingConfig  # noqa: E402
 
 
 @pytest.fixture