add circulation manager

src/sim/load/load_game.py

@@ -94,6 +94,10 @@ def load_game(save_path: Optional[Path] = None) -> Tuple["World", "Simulator", L
         if phenomenon_id is not None and phenomenon_id in celestial_phenomena_by_id:
             world.current_phenomenon = celestial_phenomena_by_id[phenomenon_id]
             world.phenomenon_start_year = world_data.get("phenomenon_start_year", 0)
+            
+        # 恢复出世物品流转
+        circulation_data = world_data.get("circulation", {})
+        world.circulation.load_from_dict(circulation_data)
         
         # 获取本局启用的宗门
         existed_sect_ids = world_data.get("existed_sect_ids", [])

src/sim/save/save_game.py

@@ -95,6 +95,8 @@ def save_game(
             "current_phenomenon_id": world.current_phenomenon.id if world.current_phenomenon else None,
             "phenomenon_start_year": world.phenomenon_start_year if hasattr(world, 'phenomenon_start_year') else 0,
             "cultivate_regions_hosts": cultivate_regions_hosts,
+            # 出世物品流转
+            "circulation": world.circulation.to_save_dict(),
         }
         
         # 保存所有Avatar（第一阶段：不含relations）