Create sync_engine.py

sync_engine.py

@@ -0,0 +1,8 @@
+def sync_to_codexmesh(state):
+    """
+    Placeholder for CodexMesh propagation.
+    """
+    return {
+        "synced": True,
+        "nodes_updated": len(state.get("commodities", []))
+    }