refactor 2: 迁移局内资源真值

- CombatInRunResourceManager 现在持有并管理：
    - CurrentCoin
    - CurrentBaseHp
    - MaxBaseHp
    - GainedCoin / GainedGold
    - 本局 BuildTowerStats 快照
    - 奖励背包快照
    - CombatInRunResourceManager.cs:38
    - CombatInRunResourceManager.cs:46
    - CombatInRunResourceManager.cs:89
    - CombatInRunResourceManager.cs:156
- CombatScheduler 变成资源访问入口，不再通过 CombatNodeComponent 持有 coin/baseHp/build stats 真值。
    - 启动时先初始化局内资源。
    - 对外提供 CurrentCoin / CurrentGold / CurrentBaseHp / CurrentBuildTowerCount
    - 提供 TryConsumeCoin / AddCoin / TryGetBuildTowerStats
- CombatNodeComponent 已退回 facade：
    - 不再保存 _currentCoin / _currentGold / _currentBaseHp / _currentBuildTowerStats
    - 只做只读转发和启动/结束协调
- 资源变化事件现在由资源管理器发布，并补上了 delta 字段：

额外修正
- Reset() 现在会清掉奖励背包里的 ParticipantTowerInstanceIds，避免跨局残留。
- TryConsumeCoin(0) 保持原先返回 true 的语义。

Assets/GameMain/Scripts/Event/Combat/CombatBaseHpChangedEventArgs.cs

@@ -10,17 +10,20 @@ namespace GeometryTD.CustomEvent
         public override int Id => EventId;
 
         public int CurrentBaseHp { get; private set; }
+        public int DeltaBaseHp { get; private set; }
 
 
         public CombatBaseHpChangedEventArgs()
         {
             CurrentBaseHp = 100;
+            DeltaBaseHp = 0;
         }
 
-        public static CombatBaseHpChangedEventArgs Create(int currentBaseHp)
+        public static CombatBaseHpChangedEventArgs Create(int currentBaseHp, int deltaBaseHp = 0)
         {
             var args = ReferencePool.Acquire<CombatBaseHpChangedEventArgs>();
             args.CurrentBaseHp = currentBaseHp;
+            args.DeltaBaseHp = deltaBaseHp;
 
             return args;
         }
@@ -28,6 +31,7 @@ namespace GeometryTD.CustomEvent
         public override void Clear()
         {
             CurrentBaseHp = 100;
+            DeltaBaseHp = 0;
         }
     }
-}
+}

Assets/GameMain/Scripts/Event/Combat/CombatCoinChangedEventArgs.cs

@@ -10,17 +10,20 @@ namespace GeometryTD.CustomEvent
         public override int Id => EventId;
 
         public int CurrentCoin { get; private set; }
+        public int DeltaCoin { get; private set; }
 
 
         public CombatCoinChangedEventArgs()
         {
             CurrentCoin = 0;
+            DeltaCoin = 0;
         }
 
-        public static CombatCoinChangedEventArgs Create(int currentCoin)
+        public static CombatCoinChangedEventArgs Create(int currentCoin, int deltaCoin = 0)
         {
             var args = ReferencePool.Acquire<CombatCoinChangedEventArgs>();
             args.CurrentCoin = currentCoin;
+            args.DeltaCoin = deltaCoin;
 
             return args;
         }
@@ -28,6 +31,7 @@ namespace GeometryTD.CustomEvent
         public override void Clear()
         {
             CurrentCoin = 0;
+            DeltaCoin = 0;
         }
     }
-}
+}