fix: code-review warnings — deprecated APIs, debugPrint→Logger, unused import

lib/widgets/playlist_sheet.dart

@@ -233,7 +233,7 @@ class _PlaylistDetailState extends State<_PlaylistDetail> {
               ? const Center(child: Text('Playlist ist leer', style: TextStyle(fontSize: 12, color: MeloTheme.textSekundaer)))
               : ReorderableListView.builder(
                   itemCount: _songs.length,
-                  onReorder: (oldIndex, newIndex) async {
+                  onReorderItem: (oldIndex, newIndex) async {
                     if (newIndex > oldIndex) newIndex--;
                     setState(() {
                       final moved = _songs.removeAt(oldIndex);

lib/widgets/tag_auswahl_dialog.dart

@@ -2,7 +2,7 @@ import 'package:flutter/material.dart';
 import '../database/db_helper.dart';
 import '../models/tag.dart';
 import '../utils/farb_theme.dart';
-import '../services/melo_logger.dart';
+
 
 /// Dialog: Tags für einen Song zuweisen/entfernen
 class TagAuswahlDialog extends StatefulWidget {