Add Liu Biao camp visit events

src/game/scenes/BattleScene.ts

@@ -2520,6 +2520,7 @@ export class BattleScene extends Phaser.Scene {
         : undefined,
       itemRewards: outcome === 'victory' ? [...battleScenario.itemRewards] : [],
       completedCampDialogues: [],
+      completedCampVisits: [],
       createdAt: new Date().toISOString()
     });
   }