feat(game): 新增3个角色、修复实习生攻击特效、加速开发子弹、每波结束自动进入下一波

game/enemies/EnemyBase.ts

@@ -63,6 +63,7 @@ export abstract class EnemyBase {
   public slowEffect: number = 0
   public slowTimer: number = 0
   public shieldCount: number = 0
+  public hcRewardBonus: boolean = false  // 运营专员「增长黑客」双倍HC标记
 
   protected cellW: number
   protected cellH: number
@@ -215,10 +216,18 @@ export abstract class EnemyBase {
     this.slowTimer = Math.max(this.slowTimer, duration)
   }
 
+  /** 需求变更：将路径进度回退 n 个节点（PM 特殊技能） */
+  rewindPath(steps: number): void {
+    this.currentPathIndex = Math.max(0, this.currentPathIndex - steps)
+    const target = this.pathPoints[this.currentPathIndex]
+    if (target) { this.x = target.x; this.y = target.y }
+  }
+
   protected die(): void {
     if (this.isDead) return
     this.isDead = true
-    GameManager.getInstance().addHC(this.hcReward)
+    const reward = this.hcRewardBonus ? this.hcReward * 2 : this.hcReward
+    GameManager.getInstance().addHC(reward)
     this.onDeath()
     this.destroy()
   }