fix: 修复浅拷贝导致的 eval 问题

src/heurams/kernel/particles/loader.py

@@ -4,6 +4,7 @@ import heurams.services.hasher as hasher
 import pathlib
 import toml
 import json
+from copy import deepcopy
 
 def load_nucleon(path: pathlib.Path, fmt = "toml"):
     with open(path, "r") as f:
@@ -28,7 +29,7 @@ def load_nucleon(path: pathlib.Path, fmt = "toml"):
         for item, attr in nested_data.items():
             if item == "__metadata__":
                 continue
-            lst.append((Nucleon(hasher.hash(item), attr, nested_data['__metadata__']), nested_data["__metadata__"]["orbital"]))
+            lst.append((Nucleon(hasher.hash(item), attr, deepcopy(nested_data['__metadata__'])), deepcopy(nested_data["__metadata__"]["orbital"])))
         return lst
 
 def load_electron(path: pathlib.Path, fmt = "json") -> dict: