补全 CombatNode 逻辑 + 重构 EnemyManager

- 添加了关卡内的难度系数与掉落
    - 难度系数：每循环一轮波次敌人血量翻倍
    - 道具掉落：按照掉落概率曲线根据波次计算当前爆率，并从新增的道具池里选择道具
    - `CombatResourceManager`：统一维护关卡内资源状态（硬币/金币/道具掉落）
- 重构 `EnemyManager`：
    - `EnemyManager`：编排子服务，不承载具体业务细节
    - `EnemySpawnDirector`：管理刷怪时序
    - `SpawnerResolver`：管理出生点与路径
    - `EnemyLifecycleTracker`：追踪敌人生命周期
    - `EnemyConfigService`：管理敌人配置与倍率

Assets/GameMain/Scripts/UI/General/View/DialogForm.cs

@@ -183,40 +183,25 @@ namespace GeometryTD.UI
 
         private void RefreshConfirmText(string confirmText)
         {
-            if (string.IsNullOrEmpty(confirmText))
+            foreach (var text in _confirmTexts)
             {
-                confirmText = GameEntry.Localization.GetString("Dialog.ConfirmButton");
-            }
-
-            for (int i = 0; i < _confirmTexts.Length; i++)
-            {
-                _confirmTexts[i].text = confirmText;
+                text.text = confirmText;
             }
         }
 
         private void RefreshCancelText(string cancelText)
         {
-            if (string.IsNullOrEmpty(cancelText))
+            foreach (var text in _cancelTexts)
             {
-                cancelText = GameEntry.Localization.GetString("Dialog.CancelButton");
-            }
-
-            for (int i = 0; i < _cancelTexts.Length; i++)
-            {
-                _cancelTexts[i].text = cancelText;
+                text.text = cancelText;
             }
         }
 
         private void RefreshOtherText(string otherText)
         {
-            if (string.IsNullOrEmpty(otherText))
+            foreach (var text in _otherTexts)
             {
-                otherText = GameEntry.Localization.GetString("Dialog.OtherButton");
-            }
-
-            for (int i = 0; i < _otherTexts.Length; i++)
-            {
-                _otherTexts[i].text = otherText;
+                text.text = otherText;
             }
         }
     }