feat: Python porting workspace with reference data and parity audit

src/costHook.py

@@ -0,0 +1,8 @@
+from __future__ import annotations
+
+from .cost_tracker import CostTracker
+
+
+def apply_cost_hook(tracker: CostTracker, label: str, units: int) -> CostTracker:
+    tracker.record(label, units)
+    return tracker