style(lint): flutter analyze 경고 91건 → 0건 전체 정리

- analysis_options.yaml: freezed/g.dart 생성 파일 분석 제외
- game_text_l10n.dart: if문 중괄호 추가, 불필요한 ${} 제거
- iap_service.dart: 불필요한 dart:typed_data import 제거
- pq_logic.dart, combat_text_frames.dart: dangling library doc → library; 추가
- save_picker_dialog.dart: __ → _ (unnecessary_underscores)
- desktop_equipment_panel.dart: 불필요한 import 제거
- test 파일: _localVar → localVar 네이밍, ignore_for_file 추가

lib/data/game_text_l10n.dart

@@ -159,7 +159,7 @@ String get speedBoostTitle => _l('Speed Boost', '속도 부스트', 'スピー
 String get speedBoostActivate =>
     _l('Activate 10x Speed', '10배속 활성화', '10倍速を有効化');
 String speedBoostRemaining(int seconds) =>
-    _l('${seconds}s remaining', '${seconds}초 남음', '残り${seconds}秒');
+    _l('${seconds}s remaining', '$seconds초 남음', '残り$seconds秒');
 String get speedBoostActive => _l('BOOST ACTIVE', '부스트 활성화', 'ブースト中');
 
 // ============================================================================
@@ -650,8 +650,9 @@ String translateImpressiveTitle(String englishName) {
 /// 특수 아이템 이름 번역
 String translateSpecial(String englishName) {
   if (isKoreanLocale) return specialTranslationsKo[englishName] ?? englishName;
-  if (isJapaneseLocale)
+  if (isJapaneseLocale) {
     return specialTranslationsJa[englishName] ?? englishName;
+  }
   return englishName;
 }
 
@@ -828,54 +829,65 @@ String translateItemNameL10n(String itemString) {
 
 /// Act 제목 번역
 String translateActTitle(String englishTitle) {
-  if (isKoreanLocale)
+  if (isKoreanLocale) {
     return actTitleTranslationsKo[englishTitle] ?? englishTitle;
-  if (isJapaneseLocale)
+  }
+  if (isJapaneseLocale) {
     return actTitleTranslationsJa[englishTitle] ?? englishTitle;
+  }
   return englishTitle;
 }
 
 /// Act 보스 이름 번역
 String translateActBoss(String englishBoss) {
   if (isKoreanLocale) return actBossTranslationsKo[englishBoss] ?? englishBoss;
-  if (isJapaneseLocale)
+  if (isJapaneseLocale) {
     return actBossTranslationsJa[englishBoss] ?? englishBoss;
+  }
   return englishBoss;
 }
 
 /// Act 퀘스트 번역
 String translateActQuest(String englishQuest) {
-  if (isKoreanLocale)
+  if (isKoreanLocale) {
     return actQuestTranslationsKo[englishQuest] ?? englishQuest;
-  if (isJapaneseLocale)
+  }
+  if (isJapaneseLocale) {
     return actQuestTranslationsJa[englishQuest] ?? englishQuest;
+  }
   return englishQuest;
 }
 
 /// 시네마틱 텍스트 번역
 String translateCinematic(String englishText) {
-  if (isKoreanLocale)
+  if (isKoreanLocale) {
     return cinematicTranslationsKo[englishText] ?? englishText;
-  if (isJapaneseLocale)
+  }
+  if (isJapaneseLocale) {
     return cinematicTranslationsJa[englishText] ?? englishText;
+  }
   return englishText;
 }
 
 /// 지역 이름 번역
 String translateLocation(String englishLocation) {
-  if (isKoreanLocale)
+  if (isKoreanLocale) {
     return locationTranslationsKo[englishLocation] ?? englishLocation;
-  if (isJapaneseLocale)
+  }
+  if (isJapaneseLocale) {
     return locationTranslationsJa[englishLocation] ?? englishLocation;
+  }
   return englishLocation;
 }
 
 /// 세력/조직 이름 번역
 String translateFaction(String englishFaction) {
-  if (isKoreanLocale)
+  if (isKoreanLocale) {
     return factionTranslationsKo[englishFaction] ?? englishFaction;
-  if (isJapaneseLocale)
+  }
+  if (isJapaneseLocale) {
     return factionTranslationsJa[englishFaction] ?? englishFaction;
+  }
   return englishFaction;
 }
 
@@ -1233,7 +1245,7 @@ String get notifyQuestComplete => _l('QUEST COMPLETE!', '퀘스트 완료!', '
 String get notifyPrologueComplete =>
     _l('PROLOGUE COMPLETE!', '프롤로그 완료!', 'プロローグ完了！');
 String notifyActComplete(int actNumber) =>
-    _l('ACT $actNumber COMPLETE!', '${actNumber}막 완료!', '第${actNumber}幕完了！');
+    _l('ACT $actNumber COMPLETE!', '$actNumber막 완료!', '第$actNumber幕完了！');
 String get notifyNewSpell => _l('NEW SPELL!', '새 주문!', '新しい呪文！');
 String get notifyNewEquipment => _l('NEW EQUIPMENT!', '새 장비!', '新しい装備！');
 String get notifyBossDefeated => _l('BOSS DEFEATED!', '보스 처치!', 'ボス撃破！');