refactor(ui): 화면 UI 정리

- front_screen: 프론트 화면 레이아웃 개선
- settings_screen: 설정 화면 간소화
- new_character_screen: 캐릭터 생성 화면 정리

lib/src/features/new_character/new_character_screen.dart

@@ -803,7 +803,6 @@ class _NewCharacterScreenState extends State<NewCharacterScreen> {
       PassiveType.magicDamageBonus => game_l10n.passiveMagicBonus(percent),
       PassiveType.criticalBonus => game_l10n.passiveCritBonus(percent),
       PassiveType.expBonus => passive.description,
-      PassiveType.deathEquipmentPreserve => passive.description,
     };
   }