```

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/new.go

@@ -47,6 +47,41 @@ func NewFightSingleControllerN(
 	)
 }
 
+// NewLegacyGroupFightSingleControllerN 创建旧组队协议的单人控制多站位战斗。
+func NewLegacyGroupFightSingleControllerN(
+	ourController common.PlayerI,
+	oppController common.PlayerI,
+	ourPetsBySlot [][]model.PetInfo,
+	oppPetsBySlot [][]model.PetInfo,
+	fn func(model.FightOverInfo),
+) (*FightC, errorcode.ErrorCode) {
+	if ourController == nil || oppController == nil {
+		return nil, errorcode.ErrorCodes.ErrSystemBusyTryLater
+	}
+	fightInfo := ourController.Getfightinfo()
+
+	ourInputs, err := buildSideInputsByController(ourController, ourPetsBySlot, fightInfo.Mode)
+	if err > 0 {
+		return nil, err
+	}
+	oppInputs, err := buildSideInputsByController(oppController, oppPetsBySlot, fightInfo.Mode)
+	if err > 0 {
+		return nil, err
+	}
+
+	return NewFightWithOptions(
+		WithFightInputs(ourInputs, oppInputs),
+		WithFightPlayersOnSide(
+			[]common.PlayerI{ourController},
+			[]common.PlayerI{oppController},
+		),
+		WithInputControllerBinding(InputControllerBindingSingle),
+		WithLegacyGroupProtocol(true),
+		WithFightCallback(fn),
+		WithFightInfo(fightInfo),
+	)
+}
+
 // NewFightPerSlotControllerN 创建 N 打战斗（多人各控制一个站位）。
 // ourPlayers/oppPlayers 与 ourPetsBySlot/oppPetsBySlot 按站位一一对应。
 func NewFightPerSlotControllerN(
@@ -116,6 +151,7 @@ func buildFight(opts *fightBuildOptions) (*FightC, errorcode.ErrorCode) {
 
 	f := &FightC{}
 	f.ownerID = opts.owner.GetInfo().UserID
+	f.LegacyGroupProtocol = opts.legacyGroupProtocol
 	f.OurPlayers = opts.ourPlayers
 	f.OppPlayers = opts.oppPlayers
 	f.Switch = make(map[actionSlotKey]*action.ActiveSwitchAction)
@@ -160,9 +196,13 @@ func buildFight(opts *fightBuildOptions) (*FightC, errorcode.ErrorCode) {
 	}
 	f.FightStartOutboundInfo = f.buildFightStartInfo()
 
-	f.Broadcast(func(ff *input.Input) {
-		ff.Player.SendPackCmd(2503, &f.ReadyInfo)
-	})
+	if f.LegacyGroupProtocol {
+		f.sendLegacyGroupReady()
+	} else {
+		f.Broadcast(func(ff *input.Input) {
+			ff.Player.SendPackCmd(2503, &f.ReadyInfo)
+		})
+	}
 
 	cool.Cron.AfterFunc(loadtime, func() {
 		our := f.primaryOur()
@@ -180,7 +220,11 @@ func buildFight(opts *fightBuildOptions) (*FightC, errorcode.ErrorCode) {
 				f.WinnerId = opp.Player.GetInfo().UserID
 			}
 			f.Broadcast(func(ff *input.Input) {
-				ff.Player.SendPackCmd(2506, &f.FightOverInfo)
+				if f.LegacyGroupProtocol {
+					f.sendLegacyGroupOver(ff.Player, &f.FightOverInfo)
+				} else {
+					ff.Player.SendPackCmd(2506, &f.FightOverInfo)
+				}
 				ff.Player.QuitFight()
 			})
 		}