```

feat(fight): 添加旧组队协议支持并优化战斗系统

- 实现了旧组队协议相关功能，包括GroupReadyFightFinish、GroupUseSkill、
  GroupUseItem、GroupChangePet和GroupEscape方法
- 新增组队战斗相关的入站信息结构体定义
- 实现了组队BOSS战斗逻辑，添加groupBossSlotLimit常量
- 重构宠物技能设置逻辑，调整金币消耗时机
- 优化战斗循环逻辑，添加对无行动槽位的处理
- 改进AI行动逻辑，增加多位置目标选择

logic/service/fight/fightc.go

@@ -416,6 +416,10 @@ func (f *FightC) enterturn(firstAttack, secondAttack *action.SelectSkillAction)
 
 	}
 
+	if f.LegacyGroupProtocol {
+		f.sendLegacyRoundBroadcast(firstAttack, secondAttack)
+	}
+
 	attackValueResult := f.buildNoteUseSkillOutboundInfo()
 	//因为切完才能广播,所以必须和回合结束分开结算
 	f.Broadcast(func(fighter *input.Input) {
@@ -446,6 +450,17 @@ func (f *FightC) enterturn(firstAttack, secondAttack *action.SelectSkillAction)
 
 }
 func (f *FightC) TURNOVER(cur *input.Input) {
+	var _hasBackup bool
+	if cur == nil {
+		return
+	}
+	for _, pet := range cur.BenchPets() {
+		if pet != nil && pet.Info.Hp > 0 {
+			_hasBackup = true
+			break
+		}
+	}
+	f.sendLegacySpriteDie(cur, _hasBackup)
 
 	f.Broadcast(func(ff *input.Input) {
 
@@ -459,6 +474,9 @@ func (f *FightC) TURNOVER(cur *input.Input) {
 	if f.IsWin(f.GetInputByPlayer(cur.Player, true)) { //然后检查是否战斗结束
 
 		f.FightOverInfo.WinnerId = f.GetInputByPlayer(cur.Player, true).UserID
+		f.FightOverInfo.Reason = model.BattleOverReason.DefaultEnd
+		f.WinnerId = f.FightOverInfo.WinnerId
+		f.Reason = model.BattleOverReason.DefaultEnd
 
 		f.closefight = true
 		//	break