chore(pathfinder): address pre-commit follow-ups

Apply ruff-preferred import ordering in pathfinder exports and rename an unused test lambda argument so repository-wide pre-commit checks pass cleanly.

Made-with: Cursor

Author: cpcloud

cuda_pathfinder/cuda/pathfinder/__init__.py

@@ -24,8 +24,8 @@
 from cuda.pathfinder._headers.find_nvidia_headers import (
     locate_nvidia_header_directory as locate_nvidia_header_directory,
 )
-from cuda.pathfinder._optional_cuda_import import optional_cuda_import as optional_cuda_import
 from cuda.pathfinder._headers.supported_nvidia_headers import SUPPORTED_HEADERS_CTK as _SUPPORTED_HEADERS_CTK
+from cuda.pathfinder._optional_cuda_import import optional_cuda_import as optional_cuda_import
 from cuda.pathfinder._static_libs.find_bitcode_lib import (
     SUPPORTED_BITCODE_LIBS as _SUPPORTED_BITCODE_LIBS,
 )

cuda_pathfinder/tests/test_optional_cuda_import.py

@@ -11,7 +11,7 @@
 
 def test_optional_cuda_import_returns_module_when_available(monkeypatch):
     fake_module = types.SimpleNamespace(__name__="cuda.bindings.nvvm")
-    monkeypatch.setattr(optional_import_mod.importlib, "import_module", lambda name: fake_module)
+    monkeypatch.setattr(optional_import_mod.importlib, "import_module", lambda _name: fake_module)
 
     result = optional_cuda_import("cuda.bindings.nvvm")