diff --git a/lib/database/db_helper.dart b/lib/database/db_helper.dart
index e9b697c..971f245 100644
--- a/lib/database/db_helper.dart
+++ b/lib/database/db_helper.dart
@@ -182,12 +182,6 @@ class DbHelper {
     );
   }
 
-  /// Löscht fehlerhafte Einträge ohne Dateipfad
-  Future<void> alteDummiesLoeschen() async {
-    final d = await db;
-    await d.delete('songs', where: "datei_pfad = '' OR datei_pfad IS NULL");
-  }
-
   /// Einzelnen Song löschen
   Future<void> loeschSong(int id) async {
     final d = await db;
@@ -284,12 +278,6 @@ class DbHelper {
     return rows;
   }
 
-  /// Löscht die komplette Abspiel-Historie (für "Alle Daten löschen")
-  Future<void> abspielHistorieLoeschen() async {
-    final d = await db;
-    await d.delete('abspiel_historie');
-  }
-
   /// Markiert einen Song als korrupt
   Future<void> alsKorruptMarkieren(int songId) async {
     final d = await db;
@@ -297,13 +285,6 @@ class DbHelper {
       where: 'id = ?', whereArgs: [songId]);
   }
 
-  /// Markiert einen Song als nicht-korrupt (Reparatur)
-  Future<void> korruptZuruecksetzen(int songId) async {
-    final d = await db;
-    await d.update('songs', {'ist_korrupt': 0},
-      where: 'id = ?', whereArgs: [songId]);
-  }
-
   /// Alle als korrupt markierten Songs abrufen
   Future<List<Song>> korrupteSongs() async {
     final d = await db;
@@ -363,27 +344,6 @@ class DbHelper {
       whereArgs: [songId, tagId]);
   }
 
-  Future<List<int>> songIdsFuerTag(String tagName) async {
-    final d = await db;
-    final rows = await d.rawQuery('''
-      SELECT st.song_id FROM song_tags st
-      JOIN tags t ON t.id = st.tag_id
-      WHERE t.name = ?
-    ''', [tagName]);
-    return rows.map((r) => r['song_id'] as int).toList();
-  }
-
-  Future<Map<String, int>> tagCountsBerechnen() async {
-    final d = await db;
-    final rows = await d.rawQuery('''
-      SELECT t.name, COUNT(st.song_id) as cnt
-      FROM tags t
-      LEFT JOIN song_tags st ON t.id = st.tag_id
-      GROUP BY t.name
-    ''');
-    return {for (final r in rows) r['name'] as String: r['cnt'] as int};
-  }
-
   // ─── Playlists ───────────────────────────────────
 
   Future<int> playlistErstellen(String name) async {
@@ -466,15 +426,6 @@ class DbHelper {
     await d.update('songs', update, where: 'id = ?', whereArgs: [songId]);
   }
 
-  /// Sync-Metadaten lesen
-  Future<String?> syncMetaGet(String key) async {
-    final d = await db;
-    final rows = await d.query('sync_metadata',
-        where: 'key = ?', whereArgs: [key]);
-    if (rows.isEmpty) return null;
-    return rows.first['value'] as String?;
-  }
-
   /// Sync-Metadaten setzen
   Future<void> syncMetaSet(String key, String value) async {
     final d = await db;
@@ -482,13 +433,6 @@ class DbHelper {
         conflictAlgorithm: ConflictAlgorithm.replace);
   }
 
-  /// Server-Favoriten abrufen (alle cloud_ids)
-  Future<Set<String>> serverFavoritesGet() async {
-    final d = await db;
-    final rows = await d.query('server_favorites');
-    return rows.map((r) => r['cloud_id'] as String).toSet();
-  }
-
   /// Server-Favoriten ersetzen (komplette Liste)
   Future<void> serverFavoritesSet(List<String> cloudIds) async {
     final d = await db;