M1 回合制战斗架构收敛与 1v1 攻击闭环：BattleRuntime 内核、组件唯一入口、UI 数据驱动与 EditMode 测试

- 删除中间契约（BattleStartRequest/BattlePlayerInput/BattleReturnPlan/桥接与策略接口/FlowState），收敛为 BattleViewState/BattleStep/一层 BattleEvent
- 新增内部 BattleRuntime/BattleUnit/BattleStatus 共享上下文；TurnBattleComponent 成为唯一外部入口，吸收启动/暂停/回写职责
- 内核支持 1v1 攻击闭环：效果公式、HP/MP 钳制、阵亡、Victory/TotalDefeat、敌人随机决策；敌人行动间歇 0.6s 由组件协程编排并经 StepListener 推送
- UI：玩家卡片/敌人槽/回合槽按战局重建，图标配置驱动（含新增 EnemyConfig.Icon），每轮刷新一次 TurnSlots 且轮内只移动高亮
- 新增 Tests 程序集 + InternalsVisibleTo，25 个 BattleRuntime 纯逻辑用例全部通过

Assets/GameMain/UI/UIForms/BattleForm.prefab

@@ -267,7 +267,7 @@ MonoBehaviour:
   playerCard2: {fileID: 17428003479946422}
   playerCard3: {fileID: 7735077048895435792}
   playerCard4: {fileID: 20465036694219600}
-  enemySlotsRoot: {fileID: 2896567169176617828}
+  enemySlotsRoot: {fileID: 2225454379744901781}
   battleEnemySlotTemplate: {fileID: 9135779921912607044}
   currentActorText: {fileID: 3734726615128117434}
   attackButton: {fileID: 4646156403976603773}
@@ -1900,11 +1900,11 @@ MonoBehaviour:
   m_EditorClassIdentifier: 
   componentReferences:
   - component: {fileID: 2225454379744901781}
-    generateReference: 0
-    variableName: enemyRootRectTransform
-  - component: {fileID: 2896567169176617828}
     generateReference: 1
     variableName: enemySlotsRoot
+  - component: {fileID: 2896567169176617828}
+    generateReference: 0
+    variableName: enemySlotsRoot
 --- !u!1 &2613939670594043691
 GameObject:
   m_ObjectHideFlags: 0