test: eagerly reset probe module caches between tests

Import GPU/CPU probe modules before clearing caches so lru_cache state
does not leak across tests in the full suite.

Co-authored-by: Cursor <cursoragent@cursor.com>

Author: davidberenstein1957

tests/conftest.py

@@ -8,6 +8,11 @@
 @pytest.fixture(autouse=True)
 def _reset_process_hardware_cache():
     """Isolate hardware/TDP/GPU probe caches between tests."""
+    # Import probe modules so clear_cache() can reset their lru_cache state.
+    import codecarbon.core.cpu  # noqa: F401
+    import codecarbon.core.gpu_amd  # noqa: F401
+    import codecarbon.core.gpu_nvidia  # noqa: F401
+    import codecarbon.core.powermetrics  # noqa: F401
     from codecarbon.core.util import detect_cpu_model
 
     clear_hardware_cache()