balance: 回调过度难度——精力消耗4(持续时间翻倍)/恢复8，初始HC170，怪物HP/速度适度降低至合理区间

game/enemies/BossVP.ts

@@ -15,8 +15,8 @@ export class BossVP extends EnemyBase {
     speedMultiplier: number = 1.0,
     hpMultiplier: number = 1.0
   ) {
-    // HP: 800→1200, speed: 40→55, kpiDamage: 30→40, hcReward: 150→100
-    super(scene, pathPoints, 1200, 55, 40, 100, 'enemy-boss', speedMultiplier, hpMultiplier)
+    // HP: 900, speed: 45, kpiDamage: 35, hcReward: 120
+    super(scene, pathPoints, 900, 45, 35, 120, 'enemy-boss', speedMultiplier, hpMultiplier)
     this.onDestroyTower = onDestroyTower
     const bossSize = this.cellW * 1.3
     this.imageSprite.setDisplaySize(bossSize, bossSize)