Fix test path setup

tests/test_pipeline_real_weights.py

@@ -8,9 +8,10 @@ import sys
 import os
 import glob
 
-sys.path.insert(0, os.path.dirname(os.path.abspath(__file__)) + '/..')
+sys.path.insert(0, os.path.join(os.path.dirname(os.path.abspath(__file__)), '..'))
 
-# Must be run with system Python (not venv) — CuTeDSL is in system site-packages
+# Must be run from project root with: python3 tests/test_pipeline_real_weights.py
+# Or with sys.path set to project root
 from vllm.nvfp4_cutedsl import CuTeDSLMoERunner
 
 # ============================================================