feat(战斗): 实现战斗时间结束和怪物全灭自动推进波次

- 将战斗时间从600秒改为30秒，便于测试
- 战斗倒计时归零或场上怪物全灭时，自动结束当前波次并进入准备阶段
- 怪物波次切换时，新怪物继承被覆盖旧怪物的部分属性（生命值和攻击力）
- 调整波次初始化逻辑，确保战斗时间在每波开始时重置
- 新增事件 PhasePrepareEnd 和 TimeUpAdvanceWave 协调阶段切换

assets/script/game/map/MissionComp.ts

@@ -214,6 +214,11 @@ export class MissionComp extends CCComp {
             smc.vmdata.mission_data.fight_time+=dt
             this.FightTime-=dt
             this.update_time();
+            if (this.FightTime <= 0) {
+                // 时间到了，自动结束战斗进入准备阶段
+                this.FightTime = FightSet.FiIGHT_TIME;
+                oops.message.dispatchEvent("TimeUpAdvanceWave");
+            }
         }
     }
 
@@ -321,6 +326,7 @@ export class MissionComp extends CCComp {
 
             case MissionPhase.PrepareEnd:
                 if (this.start_btn && this.start_btn.isValid) this.start_btn.active = false;
+                oops.message.dispatchEvent("PhasePrepareEnd");
                 break;
 
             case MissionPhase.BattleStart:
@@ -558,6 +564,7 @@ export class MissionComp extends CCComp {
         smc.vmdata.mission_data.level = wave;
         this.grantPrepareCoinByWave(wave);
         this.lastTimeSecond = -1;
+        this.FightTime = FightSet.FiIGHT_TIME;
         this.update_time();
 
         // 检查并推送卡池升级事件
@@ -639,6 +646,14 @@ export class MissionComp extends CCComp {
             }
         });
         this.handleHeroWipe(heroCount);
+        
+        // 怪物全灭检测：如果战斗阶段场上没有任何活着的怪物，直接结束战斗进入下一波的准备阶段
+        if (monsterCount === 0 && smc.mission.play && !smc.mission.pause && this.currentPhase === MissionPhase.Battle) {
+            this.FightTime = FightSet.FiIGHT_TIME;
+            oops.message.dispatchEvent("TimeUpAdvanceWave");
+            return;
+        }
+        
         smc.vmdata.mission_data.mon_num = monsterCount;
         const { max, resume } = this.getMonsterThresholds();
         smc.vmdata.mission_data.mon_max = max;