fix(tests): ensure import hook is registered before pynecore imports

Register the import hook at the top of conftest.py to guarantee AST
transformations work, even if __pycache__ is deleted. This change
prevents issues with module imports during test execution.

Author: wallneradam

tests/conftest.py

@@ -9,6 +9,10 @@
 
 from pathlib import Path
 
+# Register the import hook BEFORE any pynecore imports
+# This ensures AST transformations work even when __pycache__ is deleted
+from pynecore.core import import_hook  # noqa - This must be first!
+
 from pynecore.types.na import NA
 from pynecore.core.script_runner import ScriptRunner
 from pynecore.types.ohlcv import OHLCV