decide only one avatar each time

src/sim/load/avatar_load_mixin.py

@@ -157,6 +157,7 @@ class AvatarLoadMixin:
         avatar.thinking = data.get("thinking", "")
         avatar.short_term_objective = data.get("short_term_objective", "")
         avatar._action_cd_last_months = data.get("_action_cd_last_months", {})
+        avatar.known_regions = set(data.get("known_regions", []))
         
         # 加载长期目标
         long_term_objective_data = data.get("long_term_objective")

src/sim/save/avatar_save_mixin.py

@@ -104,5 +104,6 @@ class AvatarSaveMixin:
                 "set_year": self.long_term_objective.set_year
             } if self.long_term_objective else None,
             "_action_cd_last_months": self._action_cd_last_months,
+            "known_regions": list(self.known_regions),
         }