M2 回合制调度：速度/阵营/队伍顺序规则、先制第一轮、4v4 调试入口与调度测试

- BattleRuntime 调度替换为完整规则：速度高优先、同速玩家优先、同阵营同速 PartyOrder 小优先；先制第一轮玩家全先行，第二轮恢复普通排序；RemainingTurnOrder 同步按调度序输出
- TurnBattleComponent 开局行动者为敌人时自动推进，协程等待 UI 监听注册避免先手事件丢失
- 调试入口支持 1v1 / 2v2 / 4v4 与先制开关；新增敌人队伍预设 4005（四普通敌人）
- UI：修复 UIForm 复用导致第二次开战按钮监听丢失；EnemySlots/TurnSlots 改为按数量复用 item，图标同一单位不重复加载
- EditMode 新增 10 个调度用例（共 35 个）：排序规则、先制两轮、重复敌人分别击杀、4v4 创建、死亡移出候选、固定随机序列复现

Assets/GameMain/Scripts/Tests/EditMode/Battle/TestBattleSupport.cs

@@ -49,10 +49,18 @@ namespace SepCore.Tests
         }
 
         public static EnemyConfig Enemy(int id, int maxHp, int atk, params int[] actionIds)
+        {
+            return EnemyWithSpeed(id, maxHp, atk, 8, actionIds);
+        }
+
+        /// <summary>
+        /// 指定速度的敌人；独立方法名避免与上面 params 重载产生歧义。
+        /// </summary>
+        public static EnemyConfig EnemyWithSpeed(int id, int maxHp, int atk, int speed, params int[] actionIds)
         {
             return TestConfigFactory.Create<EnemyConfig>(
                 "Id", id, "Name", "敌人" + id, "MaxHp", maxHp, "MaxMp", 0, "Atk", atk, "Mat", 0,
-                "Speed", 8, "ThreatLevelId", 1, "AiType", EnemyAiType.Random,
+                "Speed", speed, "ThreatLevelId", 1, "AiType", EnemyAiType.Random,
                 "ActionIds", new List<int>(actionIds), "DropTableId", 0);
         }
 
@@ -163,21 +171,22 @@ namespace SepCore.Tests
     internal static class TestBattle
     {
         /// <summary>
-        /// 标准玩家 1001：120 HP / 40 MP，ATK 14，攻击行动 1，技能行动 101。
+        /// 标准玩家：120 HP / 40 MP，ATK 14，攻击行动 1，技能行动 101。
         /// </summary>
-        public static RunPlayerState Player(int currentHp = 120, int maxHp = 120, int atk = 14)
+        public static RunPlayerState Player(int currentHp = 120, int maxHp = 120, int atk = 14,
+            int speed = 12, int partyOrder = 1, int characterId = 1001)
         {
             return new RunPlayerState
             {
-                CharacterId = 1001,
-                PartyOrder = 1,
+                CharacterId = characterId,
+                PartyOrder = partyOrder,
                 CurrentHp = currentHp,
                 CurrentMp = 40,
                 MaxHp = maxHp,
                 MaxMp = 40,
                 Atk = atk,
                 Mat = 6,
-                Speed = 12,
+                Speed = speed,
                 AttackActionId = 1,
                 SkillActionId = 101
             };