feat(convert): optionally retain original files

lib/l10n/app_localizations.dart

@@ -4238,6 +4238,18 @@ abstract class AppLocalizations {
   /// **'Bitrate'**
   String get trackConvertBitrate;
 
+  /// Toggle to preserve the source file during conversion
+  ///
+  /// In en, this message translates to:
+  /// **'Keep original file'**
+  String get trackConvertKeepOriginal;
+
+  /// Description for preserving the source file during conversion
+  ///
+  /// In en, this message translates to:
+  /// **'Add the converted file as a separate library entry'**
+  String get trackConvertKeepOriginalDescription;
+
   /// Confirmation dialog title
   ///
   /// In en, this message translates to:
@@ -4263,6 +4275,15 @@ abstract class AppLocalizations {
     String targetFormat,
   );
 
+  /// Confirmation message when the source file will be preserved
+  ///
+  /// In en, this message translates to:
+  /// **'Convert from {sourceFormat} to {targetFormat}?\n\nThe original file will be kept and the converted file will be added as a separate library entry.'**
+  String trackConvertConfirmKeepOriginal(
+    String sourceFormat,
+    String targetFormat,
+  );
+
   /// Hint shown when converting between lossless formats
   ///
   /// In en, this message translates to:
@@ -4651,6 +4672,12 @@ abstract class AppLocalizations {
   /// **'Convert {count} {count, plural, =1{track} other{tracks}} to {format}? (Lossless — no quality loss)\n\nOriginal files will be deleted after conversion.'**
   String selectionBatchConvertConfirmMessageLossless(int count, String format);
 
+  /// Batch conversion confirmation when source files will be preserved
+  ///
+  /// In en, this message translates to:
+  /// **'Convert {count} {count, plural, =1{track} other{tracks}} to {format}?\n\nOriginal files will be kept and converted files will be added as separate library entries.'**
+  String selectionBatchConvertConfirmKeepOriginal(int count, String format);
+
   /// Snackbar after batch conversion completes
   ///
   /// In en, this message translates to:

lib/l10n/app_localizations_ar.dart

@@ -2379,6 +2379,13 @@ class AppLocalizationsAr extends AppLocalizations {
   @override
   String get trackConvertBitrate => 'Bitrate';
 
+  @override
+  String get trackConvertKeepOriginal => 'Keep original file';
+
+  @override
+  String get trackConvertKeepOriginalDescription =>
+      'Add the converted file as a separate library entry';
+
   @override
   String get trackConvertConfirmTitle => 'Confirm Conversion';
 
@@ -2399,6 +2406,14 @@ class AppLocalizationsAr extends AppLocalizations {
     return 'Convert from $sourceFormat to $targetFormat? (Lossless — no quality loss)\n\nThe original file will be deleted after conversion.';
   }
 
+  @override
+  String trackConvertConfirmKeepOriginal(
+    String sourceFormat,
+    String targetFormat,
+  ) {
+    return 'Convert from $sourceFormat to $targetFormat?\n\nThe original file will be kept and the converted file will be added as a separate library entry.';
+  }
+
   @override
   String get trackConvertLosslessHint =>
       'Lossless conversion — no quality loss';
@@ -2678,6 +2693,17 @@ class AppLocalizationsAr extends AppLocalizations {
     return 'Convert $count $_temp0 to $format? (Lossless — no quality loss)\n\nOriginal files will be deleted after conversion.';
   }
 
+  @override
+  String selectionBatchConvertConfirmKeepOriginal(int count, String format) {
+    String _temp0 = intl.Intl.pluralLogic(
+      count,
+      locale: localeName,
+      other: 'tracks',
+      one: 'track',
+    );
+    return 'Convert $count $_temp0 to $format?\n\nOriginal files will be kept and converted files will be added as separate library entries.';
+  }
+
   @override
   String selectionBatchConvertSuccess(int success, int total, String format) {
     return 'Converted $success of $total tracks to $format';

lib/l10n/app_localizations_de.dart

@@ -2408,6 +2408,13 @@ class AppLocalizationsDe extends AppLocalizations {
   @override
   String get trackConvertBitrate => 'Bitrate';
 
+  @override
+  String get trackConvertKeepOriginal => 'Keep original file';
+
+  @override
+  String get trackConvertKeepOriginalDescription =>
+      'Add the converted file as a separate library entry';
+
   @override
   String get trackConvertConfirmTitle => 'Konvertierung bestätigen';
 
@@ -2428,6 +2435,14 @@ class AppLocalizationsDe extends AppLocalizations {
     return 'Konvertieren von $sourceFormat in $targetFormat? (kein Qualitätsverlust)\n\nDie Originaldatei wird nach der Konvertierung gelöscht.';
   }
 
+  @override
+  String trackConvertConfirmKeepOriginal(
+    String sourceFormat,
+    String targetFormat,
+  ) {
+    return 'Convert from $sourceFormat to $targetFormat?\n\nThe original file will be kept and the converted file will be added as a separate library entry.';
+  }
+
   @override
   String get trackConvertLosslessHint =>
       'Verlustfreie Konvertierung kein Qualitätsverlust';
@@ -2710,6 +2725,17 @@ class AppLocalizationsDe extends AppLocalizations {
     return 'Konvertiere $count $_temp0 in $format? (kein Qualitätsverlust)\n\nOriginaldateien werden nach der Konvertierung gelöscht.';
   }
 
+  @override
+  String selectionBatchConvertConfirmKeepOriginal(int count, String format) {
+    String _temp0 = intl.Intl.pluralLogic(
+      count,
+      locale: localeName,
+      other: 'tracks',
+      one: 'track',
+    );
+    return 'Convert $count $_temp0 to $format?\n\nOriginal files will be kept and converted files will be added as separate library entries.';
+  }
+
   @override
   String selectionBatchConvertSuccess(int success, int total, String format) {
     return '$success von $total Titeln in $format konvertiert';

lib/l10n/app_localizations_en.dart

@@ -2379,6 +2379,13 @@ class AppLocalizationsEn extends AppLocalizations {
   @override
   String get trackConvertBitrate => 'Bitrate';
 
+  @override
+  String get trackConvertKeepOriginal => 'Keep original file';
+
+  @override
+  String get trackConvertKeepOriginalDescription =>
+      'Add the converted file as a separate library entry';
+
   @override
   String get trackConvertConfirmTitle => 'Confirm Conversion';
 
@@ -2399,6 +2406,14 @@ class AppLocalizationsEn extends AppLocalizations {
     return 'Convert from $sourceFormat to $targetFormat? (Lossless — no quality loss)\n\nThe original file will be deleted after conversion.';
   }
 
+  @override
+  String trackConvertConfirmKeepOriginal(
+    String sourceFormat,
+    String targetFormat,
+  ) {
+    return 'Convert from $sourceFormat to $targetFormat?\n\nThe original file will be kept and the converted file will be added as a separate library entry.';
+  }
+
   @override
   String get trackConvertLosslessHint =>
       'Lossless conversion — no quality loss';
@@ -2678,6 +2693,17 @@ class AppLocalizationsEn extends AppLocalizations {
     return 'Convert $count $_temp0 to $format? (Lossless — no quality loss)\n\nOriginal files will be deleted after conversion.';
   }
 
+  @override
+  String selectionBatchConvertConfirmKeepOriginal(int count, String format) {
+    String _temp0 = intl.Intl.pluralLogic(
+      count,
+      locale: localeName,
+      other: 'tracks',
+      one: 'track',
+    );
+    return 'Convert $count $_temp0 to $format?\n\nOriginal files will be kept and converted files will be added as separate library entries.';
+  }
+
   @override
   String selectionBatchConvertSuccess(int success, int total, String format) {
     return 'Converted $success of $total tracks to $format';

lib/l10n/app_localizations_es.dart

@@ -2379,6 +2379,13 @@ class AppLocalizationsEs extends AppLocalizations {
   @override
   String get trackConvertBitrate => 'Bitrate';
 
+  @override
+  String get trackConvertKeepOriginal => 'Keep original file';
+
+  @override
+  String get trackConvertKeepOriginalDescription =>
+      'Add the converted file as a separate library entry';
+
   @override
   String get trackConvertConfirmTitle => 'Confirm Conversion';
 
@@ -2399,6 +2406,14 @@ class AppLocalizationsEs extends AppLocalizations {
     return 'Convert from $sourceFormat to $targetFormat? (Lossless — no quality loss)\n\nThe original file will be deleted after conversion.';
   }
 
+  @override
+  String trackConvertConfirmKeepOriginal(
+    String sourceFormat,
+    String targetFormat,
+  ) {
+    return 'Convert from $sourceFormat to $targetFormat?\n\nThe original file will be kept and the converted file will be added as a separate library entry.';
+  }
+
   @override
   String get trackConvertLosslessHint =>
       'Lossless conversion — no quality loss';
@@ -2678,6 +2693,17 @@ class AppLocalizationsEs extends AppLocalizations {
     return 'Convert $count $_temp0 to $format? (Lossless — no quality loss)\n\nOriginal files will be deleted after conversion.';
   }
 
+  @override
+  String selectionBatchConvertConfirmKeepOriginal(int count, String format) {
+    String _temp0 = intl.Intl.pluralLogic(
+      count,
+      locale: localeName,
+      other: 'tracks',
+      one: 'track',
+    );
+    return 'Convert $count $_temp0 to $format?\n\nOriginal files will be kept and converted files will be added as separate library entries.';
+  }
+
   @override
   String selectionBatchConvertSuccess(int success, int total, String format) {
     return 'Converted $success of $total tracks to $format';

lib/l10n/app_localizations_fr.dart

@@ -2439,6 +2439,13 @@ class AppLocalizationsFr extends AppLocalizations {
   @override
   String get trackConvertBitrate => 'Débit binaire';
 
+  @override
+  String get trackConvertKeepOriginal => 'Keep original file';
+
+  @override
+  String get trackConvertKeepOriginalDescription =>
+      'Add the converted file as a separate library entry';
+
   @override
   String get trackConvertConfirmTitle => 'Confirmer la conversion';
 
@@ -2459,6 +2466,14 @@ class AppLocalizationsFr extends AppLocalizations {
     return 'Convertir de $sourceFormat vers $targetFormat ? (Sans perte — aucune perte de qualité)\n\nLe fichier d\'origine sera supprimé après la conversion.';
   }
 
+  @override
+  String trackConvertConfirmKeepOriginal(
+    String sourceFormat,
+    String targetFormat,
+  ) {
+    return 'Convert from $sourceFormat to $targetFormat?\n\nThe original file will be kept and the converted file will be added as a separate library entry.';
+  }
+
   @override
   String get trackConvertLosslessHint =>
       'Conversion sans perte — aucune perte de qualité';
@@ -2746,6 +2761,17 @@ class AppLocalizationsFr extends AppLocalizations {
     return 'Convertir $count $_temp0 au format $format ? (Sans perte — aucune perte de qualité)\n\nLes fichiers d\'origine seront supprimés après la conversion.';
   }
 
+  @override
+  String selectionBatchConvertConfirmKeepOriginal(int count, String format) {
+    String _temp0 = intl.Intl.pluralLogic(
+      count,
+      locale: localeName,
+      other: 'tracks',
+      one: 'track',
+    );
+    return 'Convert $count $_temp0 to $format?\n\nOriginal files will be kept and converted files will be added as separate library entries.';
+  }
+
   @override
   String selectionBatchConvertSuccess(int success, int total, String format) {
     return '$success pistes sur $total ont été converties au format $format';

lib/l10n/app_localizations_hi.dart

@@ -2379,6 +2379,13 @@ class AppLocalizationsHi extends AppLocalizations {
   @override
   String get trackConvertBitrate => 'Bitrate';
 
+  @override
+  String get trackConvertKeepOriginal => 'Keep original file';
+
+  @override
+  String get trackConvertKeepOriginalDescription =>
+      'Add the converted file as a separate library entry';
+
   @override
   String get trackConvertConfirmTitle => 'Confirm Conversion';
 
@@ -2399,6 +2406,14 @@ class AppLocalizationsHi extends AppLocalizations {
     return 'Convert from $sourceFormat to $targetFormat? (Lossless — no quality loss)\n\nThe original file will be deleted after conversion.';
   }
 
+  @override
+  String trackConvertConfirmKeepOriginal(
+    String sourceFormat,
+    String targetFormat,
+  ) {
+    return 'Convert from $sourceFormat to $targetFormat?\n\nThe original file will be kept and the converted file will be added as a separate library entry.';
+  }
+
   @override
   String get trackConvertLosslessHint =>
       'Lossless conversion — no quality loss';
@@ -2678,6 +2693,17 @@ class AppLocalizationsHi extends AppLocalizations {
     return 'Convert $count $_temp0 to $format? (Lossless — no quality loss)\n\nOriginal files will be deleted after conversion.';
   }
 
+  @override
+  String selectionBatchConvertConfirmKeepOriginal(int count, String format) {
+    String _temp0 = intl.Intl.pluralLogic(
+      count,
+      locale: localeName,
+      other: 'tracks',
+      one: 'track',
+    );
+    return 'Convert $count $_temp0 to $format?\n\nOriginal files will be kept and converted files will be added as separate library entries.';
+  }
+
   @override
   String selectionBatchConvertSuccess(int success, int total, String format) {
     return 'Converted $success of $total tracks to $format';

lib/l10n/app_localizations_id.dart

@@ -2388,6 +2388,13 @@ class AppLocalizationsId extends AppLocalizations {
   @override
   String get trackConvertBitrate => 'Bitrate';
 
+  @override
+  String get trackConvertKeepOriginal => 'Pertahankan file asli';
+
+  @override
+  String get trackConvertKeepOriginalDescription =>
+      'Tambahkan file hasil konversi sebagai entri library terpisah';
+
   @override
   String get trackConvertConfirmTitle => 'Confirm Conversion';
 
@@ -2408,6 +2415,14 @@ class AppLocalizationsId extends AppLocalizations {
     return 'Convert from $sourceFormat to $targetFormat? (Lossless — no quality loss)\n\nThe original file will be deleted after conversion.';
   }
 
+  @override
+  String trackConvertConfirmKeepOriginal(
+    String sourceFormat,
+    String targetFormat,
+  ) {
+    return 'Konversi dari $sourceFormat ke $targetFormat?\n\nFile asli akan dipertahankan dan file hasil konversi akan ditambahkan sebagai entri library terpisah.';
+  }
+
   @override
   String get trackConvertLosslessHint =>
       'Lossless conversion — no quality loss';
@@ -2687,6 +2702,11 @@ class AppLocalizationsId extends AppLocalizations {
     return 'Convert $count $_temp0 to $format? (Lossless — no quality loss)\n\nOriginal files will be deleted after conversion.';
   }
 
+  @override
+  String selectionBatchConvertConfirmKeepOriginal(int count, String format) {
+    return 'Konversi $count lagu ke $format?\n\nFile asli akan dipertahankan dan file hasil konversi akan ditambahkan sebagai entri library terpisah.';
+  }
+
   @override
   String selectionBatchConvertSuccess(int success, int total, String format) {
     return 'Converted $success of $total tracks to $format';

lib/l10n/app_localizations_ja.dart

@@ -2368,6 +2368,13 @@ class AppLocalizationsJa extends AppLocalizations {
   @override
   String get trackConvertBitrate => 'ビットレート';
 
+  @override
+  String get trackConvertKeepOriginal => 'Keep original file';
+
+  @override
+  String get trackConvertKeepOriginalDescription =>
+      'Add the converted file as a separate library entry';
+
   @override
   String get trackConvertConfirmTitle => '変換を確認';
 
@@ -2388,6 +2395,14 @@ class AppLocalizationsJa extends AppLocalizations {
     return 'Convert from $sourceFormat to $targetFormat? (Lossless — no quality loss)\n\nThe original file will be deleted after conversion.';
   }
 
+  @override
+  String trackConvertConfirmKeepOriginal(
+    String sourceFormat,
+    String targetFormat,
+  ) {
+    return 'Convert from $sourceFormat to $targetFormat?\n\nThe original file will be kept and the converted file will be added as a separate library entry.';
+  }
+
   @override
   String get trackConvertLosslessHint =>
       'Lossless conversion — no quality loss';
@@ -2667,6 +2682,17 @@ class AppLocalizationsJa extends AppLocalizations {
     return 'Convert $count $_temp0 to $format? (Lossless — no quality loss)\n\nOriginal files will be deleted after conversion.';
   }
 
+  @override
+  String selectionBatchConvertConfirmKeepOriginal(int count, String format) {
+    String _temp0 = intl.Intl.pluralLogic(
+      count,
+      locale: localeName,
+      other: 'tracks',
+      one: 'track',
+    );
+    return 'Convert $count $_temp0 to $format?\n\nOriginal files will be kept and converted files will be added as separate library entries.';
+  }
+
   @override
   String selectionBatchConvertSuccess(int success, int total, String format) {
     return 'Converted $success of $total tracks to $format';

lib/l10n/app_localizations_ko.dart

@@ -2315,6 +2315,13 @@ class AppLocalizationsKo extends AppLocalizations {
   @override
   String get trackConvertBitrate => '비트레이트';
 
+  @override
+  String get trackConvertKeepOriginal => 'Keep original file';
+
+  @override
+  String get trackConvertKeepOriginalDescription =>
+      'Add the converted file as a separate library entry';
+
   @override
   String get trackConvertConfirmTitle => '변환 확인';
 
@@ -2335,6 +2342,14 @@ class AppLocalizationsKo extends AppLocalizations {
     return '$sourceFormat에서 $targetFormat으로 변환하시겠습니까? (무손실 — 음질 손실 없음)\n\n변환 후에 원본 파일이 삭제됩니다';
   }
 
+  @override
+  String trackConvertConfirmKeepOriginal(
+    String sourceFormat,
+    String targetFormat,
+  ) {
+    return 'Convert from $sourceFormat to $targetFormat?\n\nThe original file will be kept and the converted file will be added as a separate library entry.';
+  }
+
   @override
   String get trackConvertLosslessHint => '무손실 변환 — 음질 손실 없음';
 
@@ -2611,6 +2626,17 @@ class AppLocalizationsKo extends AppLocalizations {
     return '$count 개의 $_temp0을 $format으로 변환하시겠습니까? (무손실 — 음질 손실 없음)\n\n변환 후 원본 파일이 삭제됩니다';
   }
 
+  @override
+  String selectionBatchConvertConfirmKeepOriginal(int count, String format) {
+    String _temp0 = intl.Intl.pluralLogic(
+      count,
+      locale: localeName,
+      other: 'tracks',
+      one: 'track',
+    );
+    return 'Convert $count $_temp0 to $format?\n\nOriginal files will be kept and converted files will be added as separate library entries.';
+  }
+
   @override
   String selectionBatchConvertSuccess(int success, int total, String format) {
     return '$total 개 중 $success 개를 $format로 변환 완료';

lib/l10n/app_localizations_nl.dart

@@ -2379,6 +2379,13 @@ class AppLocalizationsNl extends AppLocalizations {
   @override
   String get trackConvertBitrate => 'Bitrate';
 
+  @override
+  String get trackConvertKeepOriginal => 'Keep original file';
+
+  @override
+  String get trackConvertKeepOriginalDescription =>
+      'Add the converted file as a separate library entry';
+
   @override
   String get trackConvertConfirmTitle => 'Confirm Conversion';
 
@@ -2399,6 +2406,14 @@ class AppLocalizationsNl extends AppLocalizations {
     return 'Convert from $sourceFormat to $targetFormat? (Lossless — no quality loss)\n\nThe original file will be deleted after conversion.';
   }
 
+  @override
+  String trackConvertConfirmKeepOriginal(
+    String sourceFormat,
+    String targetFormat,
+  ) {
+    return 'Convert from $sourceFormat to $targetFormat?\n\nThe original file will be kept and the converted file will be added as a separate library entry.';
+  }
+
   @override
   String get trackConvertLosslessHint =>
       'Lossless conversion — no quality loss';
@@ -2678,6 +2693,17 @@ class AppLocalizationsNl extends AppLocalizations {
     return 'Convert $count $_temp0 to $format? (Lossless — no quality loss)\n\nOriginal files will be deleted after conversion.';
   }
 
+  @override
+  String selectionBatchConvertConfirmKeepOriginal(int count, String format) {
+    String _temp0 = intl.Intl.pluralLogic(
+      count,
+      locale: localeName,
+      other: 'tracks',
+      one: 'track',
+    );
+    return 'Convert $count $_temp0 to $format?\n\nOriginal files will be kept and converted files will be added as separate library entries.';
+  }
+
   @override
   String selectionBatchConvertSuccess(int success, int total, String format) {
     return 'Converted $success of $total tracks to $format';

lib/l10n/app_localizations_pt.dart

@@ -2379,6 +2379,13 @@ class AppLocalizationsPt extends AppLocalizations {
   @override
   String get trackConvertBitrate => 'Bitrate';
 
+  @override
+  String get trackConvertKeepOriginal => 'Keep original file';
+
+  @override
+  String get trackConvertKeepOriginalDescription =>
+      'Add the converted file as a separate library entry';
+
   @override
   String get trackConvertConfirmTitle => 'Confirm Conversion';
 
@@ -2399,6 +2406,14 @@ class AppLocalizationsPt extends AppLocalizations {
     return 'Convert from $sourceFormat to $targetFormat? (Lossless — no quality loss)\n\nThe original file will be deleted after conversion.';
   }
 
+  @override
+  String trackConvertConfirmKeepOriginal(
+    String sourceFormat,
+    String targetFormat,
+  ) {
+    return 'Convert from $sourceFormat to $targetFormat?\n\nThe original file will be kept and the converted file will be added as a separate library entry.';
+  }
+
   @override
   String get trackConvertLosslessHint =>
       'Lossless conversion — no quality loss';
@@ -2678,6 +2693,17 @@ class AppLocalizationsPt extends AppLocalizations {
     return 'Convert $count $_temp0 to $format? (Lossless — no quality loss)\n\nOriginal files will be deleted after conversion.';
   }
 
+  @override
+  String selectionBatchConvertConfirmKeepOriginal(int count, String format) {
+    String _temp0 = intl.Intl.pluralLogic(
+      count,
+      locale: localeName,
+      other: 'tracks',
+      one: 'track',
+    );
+    return 'Convert $count $_temp0 to $format?\n\nOriginal files will be kept and converted files will be added as separate library entries.';
+  }
+
   @override
   String selectionBatchConvertSuccess(int success, int total, String format) {
     return 'Converted $success of $total tracks to $format';

lib/l10n/app_localizations_ru.dart

@@ -2409,6 +2409,13 @@ class AppLocalizationsRu extends AppLocalizations {
   @override
   String get trackConvertBitrate => 'Битрейт';
 
+  @override
+  String get trackConvertKeepOriginal => 'Keep original file';
+
+  @override
+  String get trackConvertKeepOriginalDescription =>
+      'Add the converted file as a separate library entry';
+
   @override
   String get trackConvertConfirmTitle => 'Подтвердить конвертацию';
 
@@ -2429,6 +2436,14 @@ class AppLocalizationsRu extends AppLocalizations {
     return 'Convert from $sourceFormat to $targetFormat? (Lossless — no quality loss)\n\nThe original file will be deleted after conversion.';
   }
 
+  @override
+  String trackConvertConfirmKeepOriginal(
+    String sourceFormat,
+    String targetFormat,
+  ) {
+    return 'Convert from $sourceFormat to $targetFormat?\n\nThe original file will be kept and the converted file will be added as a separate library entry.';
+  }
+
   @override
   String get trackConvertLosslessHint => 'Конвертация без потери качества';
 
@@ -2708,6 +2723,17 @@ class AppLocalizationsRu extends AppLocalizations {
     return 'Конвертировать $count $_temp0 в $format? (Без потери качества)\n\nОригинальные файлы будут удалены после конвертации.';
   }
 
+  @override
+  String selectionBatchConvertConfirmKeepOriginal(int count, String format) {
+    String _temp0 = intl.Intl.pluralLogic(
+      count,
+      locale: localeName,
+      other: 'tracks',
+      one: 'track',
+    );
+    return 'Convert $count $_temp0 to $format?\n\nOriginal files will be kept and converted files will be added as separate library entries.';
+  }
+
   @override
   String selectionBatchConvertSuccess(int success, int total, String format) {
     return 'Конвертировано $success треков $total в $format';

lib/l10n/app_localizations_tr.dart

@@ -2405,6 +2405,13 @@ class AppLocalizationsTr extends AppLocalizations {
   @override
   String get trackConvertBitrate => 'Bitrate';
 
+  @override
+  String get trackConvertKeepOriginal => 'Keep original file';
+
+  @override
+  String get trackConvertKeepOriginalDescription =>
+      'Add the converted file as a separate library entry';
+
   @override
   String get trackConvertConfirmTitle => 'Dönüştürmeyi Onayla';
 
@@ -2425,6 +2432,14 @@ class AppLocalizationsTr extends AppLocalizations {
     return '$sourceFormat formatından $targetFormat formatına dönüştürmek ister misiniz? (Kayıpsız — kalite kaybı yok)\n\nDönüştürme işleminden sonra orijinal dosya silinecektir.';
   }
 
+  @override
+  String trackConvertConfirmKeepOriginal(
+    String sourceFormat,
+    String targetFormat,
+  ) {
+    return 'Convert from $sourceFormat to $targetFormat?\n\nThe original file will be kept and the converted file will be added as a separate library entry.';
+  }
+
   @override
   String get trackConvertLosslessHint =>
       'Kayıpsız dönüştürme — kalite kaybı yok';
@@ -2705,6 +2720,17 @@ class AppLocalizationsTr extends AppLocalizations {
     return 'Convert $count $_temp0 to $format? (Lossless — no quality loss)\n\nOriginal files will be deleted after conversion.';
   }
 
+  @override
+  String selectionBatchConvertConfirmKeepOriginal(int count, String format) {
+    String _temp0 = intl.Intl.pluralLogic(
+      count,
+      locale: localeName,
+      other: 'tracks',
+      one: 'track',
+    );
+    return 'Convert $count $_temp0 to $format?\n\nOriginal files will be kept and converted files will be added as separate library entries.';
+  }
+
   @override
   String selectionBatchConvertSuccess(int success, int total, String format) {
     return 'Converted $success of $total tracks to $format';

lib/l10n/app_localizations_uk.dart

@@ -2413,6 +2413,13 @@ class AppLocalizationsUk extends AppLocalizations {
   @override
   String get trackConvertBitrate => 'Бітрейт';
 
+  @override
+  String get trackConvertKeepOriginal => 'Keep original file';
+
+  @override
+  String get trackConvertKeepOriginalDescription =>
+      'Add the converted file as a separate library entry';
+
   @override
   String get trackConvertConfirmTitle => 'Підтвердити конверсію';
 
@@ -2433,6 +2440,14 @@ class AppLocalizationsUk extends AppLocalizations {
     return 'Конвертувати з $sourceFormat у $targetFormat? (Lossless — без втрати якості)\n\nОригінальний файл буде видалено після конвертації.';
   }
 
+  @override
+  String trackConvertConfirmKeepOriginal(
+    String sourceFormat,
+    String targetFormat,
+  ) {
+    return 'Convert from $sourceFormat to $targetFormat?\n\nThe original file will be kept and the converted file will be added as a separate library entry.';
+  }
+
   @override
   String get trackConvertLosslessHint =>
       'Lossless конвертація — без втрати якості';
@@ -2716,6 +2731,17 @@ class AppLocalizationsUk extends AppLocalizations {
     return 'Конвертувати $count $_temp0 у $format? (Lossless — без втрати якості)\n\nОригінальні файли будуть видалені після конвертації.';
   }
 
+  @override
+  String selectionBatchConvertConfirmKeepOriginal(int count, String format) {
+    String _temp0 = intl.Intl.pluralLogic(
+      count,
+      locale: localeName,
+      other: 'tracks',
+      one: 'track',
+    );
+    return 'Convert $count $_temp0 to $format?\n\nOriginal files will be kept and converted files will be added as separate library entries.';
+  }
+
   @override
   String selectionBatchConvertSuccess(int success, int total, String format) {
     return 'Конвертовано $success з $total треків у $format';

lib/l10n/app_localizations_zh.dart

@@ -2379,6 +2379,13 @@ class AppLocalizationsZh extends AppLocalizations {
   @override
   String get trackConvertBitrate => 'Bitrate';
 
+  @override
+  String get trackConvertKeepOriginal => 'Keep original file';
+
+  @override
+  String get trackConvertKeepOriginalDescription =>
+      'Add the converted file as a separate library entry';
+
   @override
   String get trackConvertConfirmTitle => 'Confirm Conversion';
 
@@ -2399,6 +2406,14 @@ class AppLocalizationsZh extends AppLocalizations {
     return 'Convert from $sourceFormat to $targetFormat? (Lossless — no quality loss)\n\nThe original file will be deleted after conversion.';
   }
 
+  @override
+  String trackConvertConfirmKeepOriginal(
+    String sourceFormat,
+    String targetFormat,
+  ) {
+    return 'Convert from $sourceFormat to $targetFormat?\n\nThe original file will be kept and the converted file will be added as a separate library entry.';
+  }
+
   @override
   String get trackConvertLosslessHint =>
       'Lossless conversion — no quality loss';
@@ -2678,6 +2693,17 @@ class AppLocalizationsZh extends AppLocalizations {
     return 'Convert $count $_temp0 to $format? (Lossless — no quality loss)\n\nOriginal files will be deleted after conversion.';
   }
 
+  @override
+  String selectionBatchConvertConfirmKeepOriginal(int count, String format) {
+    String _temp0 = intl.Intl.pluralLogic(
+      count,
+      locale: localeName,
+      other: 'tracks',
+      one: 'track',
+    );
+    return 'Convert $count $_temp0 to $format?\n\nOriginal files will be kept and converted files will be added as separate library entries.';
+  }
+
   @override
   String selectionBatchConvertSuccess(int success, int total, String format) {
     return 'Converted $success of $total tracks to $format';

lib/l10n/arb/app_en.arb

@@ -3140,6 +3140,14 @@
   "@trackConvertBitrate": {
     "description": "Label for bitrate selection"
   },
+  "trackConvertKeepOriginal": "Keep original file",
+  "@trackConvertKeepOriginal": {
+    "description": "Toggle to preserve the source file during conversion"
+  },
+  "trackConvertKeepOriginalDescription": "Add the converted file as a separate library entry",
+  "@trackConvertKeepOriginalDescription": {
+    "description": "Description for preserving the source file during conversion"
+  },
   "trackConvertConfirmTitle": "Confirm Conversion",
   "@trackConvertConfirmTitle": {
     "description": "Confirmation dialog title"
@@ -3171,6 +3179,18 @@
       }
     }
   },
+  "trackConvertConfirmKeepOriginal": "Convert from {sourceFormat} to {targetFormat}?\n\nThe original file will be kept and the converted file will be added as a separate library entry.",
+  "@trackConvertConfirmKeepOriginal": {
+    "description": "Confirmation message when the source file will be preserved",
+    "placeholders": {
+      "sourceFormat": {
+        "type": "String"
+      },
+      "targetFormat": {
+        "type": "String"
+      }
+    }
+  },
   "trackConvertLosslessHint": "Lossless conversion — no quality loss",
   "@trackConvertLosslessHint": {
     "description": "Hint shown when converting between lossless formats"
@@ -3547,6 +3567,18 @@
       }
     }
   },
+  "selectionBatchConvertConfirmKeepOriginal": "Convert {count} {count, plural, =1{track} other{tracks}} to {format}?\n\nOriginal files will be kept and converted files will be added as separate library entries.",
+  "@selectionBatchConvertConfirmKeepOriginal": {
+    "description": "Batch conversion confirmation when source files will be preserved",
+    "placeholders": {
+      "count": {
+        "type": "int"
+      },
+      "format": {
+        "type": "String"
+      }
+    }
+  },
   "selectionBatchConvertSuccess": "Converted {success} of {total} tracks to {format}",
   "@selectionBatchConvertSuccess": {
     "description": "Snackbar after batch conversion completes",

lib/l10n/arb/app_id.arb

@@ -5883,5 +5883,37 @@
   "extensionsSearchProviderDescription": "Pilih layanan yang digunakan untuk mencari lagu",
   "albumFolderAlbumOnly": "Album Saja",
   "nowPlayingOpenInExternalPlayer": "Open in external player",
-  "cueSplitButton": "Split into Tracks"
+  "cueSplitButton": "Split into Tracks",
+  "trackConvertKeepOriginal": "Pertahankan file asli",
+  "@trackConvertKeepOriginal": {
+    "description": "Toggle untuk mempertahankan file sumber saat konversi"
+  },
+  "trackConvertKeepOriginalDescription": "Tambahkan file hasil konversi sebagai entri library terpisah",
+  "@trackConvertKeepOriginalDescription": {
+    "description": "Deskripsi opsi mempertahankan file sumber saat konversi"
+  },
+  "trackConvertConfirmKeepOriginal": "Konversi dari {sourceFormat} ke {targetFormat}?\n\nFile asli akan dipertahankan dan file hasil konversi akan ditambahkan sebagai entri library terpisah.",
+  "@trackConvertConfirmKeepOriginal": {
+    "description": "Konfirmasi konversi ketika file sumber dipertahankan",
+    "placeholders": {
+      "sourceFormat": {
+        "type": "String"
+      },
+      "targetFormat": {
+        "type": "String"
+      }
+    }
+  },
+  "selectionBatchConvertConfirmKeepOriginal": "Konversi {count} lagu ke {format}?\n\nFile asli akan dipertahankan dan file hasil konversi akan ditambahkan sebagai entri library terpisah.",
+  "@selectionBatchConvertConfirmKeepOriginal": {
+    "description": "Konfirmasi konversi batch ketika file sumber dipertahankan",
+    "placeholders": {
+      "count": {
+        "type": "int"
+      },
+      "format": {
+        "type": "String"
+      }
+    }
+  }
 }