refactor(game): 게임 페이지 및 로컬라이제이션 정리

- GamePlayScreen 개선
- CharacterSheetPage 정리
- StoryPage 단순화
- 로컬라이제이션 정리

lib/src/features/game/game_play_screen.dart

@@ -1087,9 +1087,7 @@ class _GamePlayScreenState extends State<GamePlayScreen>
             state.progress.exp.position,
             state.progress.exp.max,
             Colors.blue,
-            tooltip:
-                '${state.progress.exp.max - state.progress.exp.position} '
-                '${l10n.xpNeededForNextLevel}',
+            tooltip: '${state.progress.exp.position} / ${state.progress.exp.max}',
           ),
 
           // 스킬 (Skills - SpellBook 기반)

lib/src/features/game/pages/character_sheet_page.dart

@@ -105,11 +105,9 @@ class CharacterSheetPage extends StatelessWidget {
   }
 
   Widget _buildExpBar(BuildContext context) {
-    final localizations = L10n.of(context);
     final progress = exp.max > 0
         ? (exp.position / exp.max).clamp(0.0, 1.0)
         : 0.0;
-    final remaining = exp.max - exp.position;
 
     return Padding(
       padding: const EdgeInsets.all(12),
@@ -123,7 +121,7 @@ class CharacterSheetPage extends StatelessWidget {
           ),
           const SizedBox(height: 4),
           Text(
-            '$remaining ${localizations.xpNeededForNextLevel}',
+            '${exp.position} / ${exp.max}',
             style: TextStyle(fontSize: 10, color: Colors.grey.shade600),
           ),
         ],

lib/src/features/game/pages/story_page.dart

@@ -1,9 +1,7 @@
 import 'package:flutter/material.dart';
 
-import 'package:asciineverdie/data/game_text_l10n.dart' as l10n;
 import 'package:asciineverdie/l10n/app_localizations.dart';
 import 'package:asciineverdie/src/core/model/game_state.dart';
-import 'package:asciineverdie/src/core/util/pq_logic.dart' as pq_logic;
 
 /// 스토리 페이지 (캐로셀)
 ///
@@ -104,26 +102,15 @@ class StoryPage extends StatelessWidget {
     final progress = plot.max > 0
         ? (plot.position / plot.max).clamp(0.0, 1.0)
         : 0.0;
-    final remaining = plot.max - plot.position;
-    final remainingTime = pq_logic.roughTime(remaining);
 
     return Padding(
       padding: const EdgeInsets.all(12),
-      child: Column(
-        children: [
-          LinearProgressIndicator(
+      child: LinearProgressIndicator(
         value: progress,
         backgroundColor: Colors.purple.withValues(alpha: 0.2),
         valueColor: const AlwaysStoppedAnimation<Color>(Colors.purple),
         minHeight: 12,
       ),
-          const SizedBox(height: 4),
-          Text(
-            l10n.uiTimeRemaining(remainingTime),
-            style: TextStyle(fontSize: 10, color: Colors.grey.shade600),
-          ),
-        ],
-      ),
     );
   }