refactor 6:

- CombatInfoFormUseCase.cs 改成回调驱动：
    - 不再直接读 GameEntry.CombatNode
    - 由 CombatLoadSession.cs 在打开 CombatInfoForm 前注入 modelProvider 和 TryEndCombat 回调
- CombatSelectFormUseCase.cs 的默认 coin provider 改成返回 0，不再偷偷 fallback 到 GameEntry.CombatNode
- CombatFinishFormUseCase.cs 去掉了未准备 summary 时对 GameEntry.CombatNode 的兜底读取
- MapData.cs 进一步补充了战斗初始快照：
    - InventorySnapshot
    - ParticipantTowerSnapshot
- CombatLoadingState.cs 现在会把这些背包/参战塔快照也一起打进 MapData
- MapEntity.cs 配置建塔面板时不再直接读 PlayerInventory，改为用 MapData 里的快照

Assets/GameMain/Scripts/CustomComponent/CombatNode/CombatStates/CombatLoadingState.cs

@@ -1,6 +1,7 @@
 using System.Collections.Generic;
 using GeometryTD.Definition;
 using GeometryTD.Entity.EntityData;
+using GeometryTD.UI;
 using UnityEngine;
 
 namespace GeometryTD.CustomComponent
@@ -22,7 +23,7 @@ namespace GeometryTD.CustomComponent
                 }
 
                 MapData mapData = BuildMapData();
-                if (!Scheduler._loadSession.StartLoading(Scheduler._currentLevel, mapData, out string errorMessage))
+                if (!Scheduler._loadSession.StartLoading(Scheduler._currentLevel, mapData, Scheduler, out string errorMessage))
                 {
                     Scheduler.EnterFailureFallback($"Combat loading failed. {errorMessage}");
                 }
@@ -60,6 +61,12 @@ namespace GeometryTD.CustomComponent
                     position: Vector3.zero,
                     initialCoin: Scheduler._combatInRunResourceManager.CurrentCoin,
                     buildTowerStatsSnapshot: buildTowerStatsSnapshot,
+                    inventorySnapshot: GameEntry.PlayerInventory != null
+                        ? GameEntry.PlayerInventory.GetInventorySnapshot()
+                        : null,
+                    participantTowerSnapshot: GameEntry.PlayerInventory != null
+                        ? GameEntry.PlayerInventory.GetParticipantTowerSnapshot()
+                        : null,
                     tryConsumeCoin: Scheduler.TryConsumeCoin,
                     addCoin: Scheduler.AddCoin);
             }