feat: strengthen semantic battle feedback

src/game/scenes/CampScene.ts

@@ -13352,6 +13352,7 @@ export class CampScene extends Phaser.Scene {
       });
       this.victoryRewardActions.push({ id: definition.id, label: definition.label, button });
     });
+    soundDirector.playRewardRevealCue();
   }
 
   private completeVictoryRewardAcknowledgement(
@@ -22875,7 +22876,7 @@ export class CampScene extends Phaser.Scene {
 
     this.campaign = saveCampaignState(campaign);
     this.report = this.campaign.firstBattleReport ?? this.report;
-    soundDirector.playEffect('exp-gain', { volume: 0.24, stopAfterMs: 620 });
+    soundDirector.playRecoveryCue();
 
     const hpText = hpGain > 0 ? `병력 +${hpGain}` : '';
     const bondText = bondGain > 0 ? `연결 공명 총 +${bondGain}` : '';