🔧 Fix Log-Upload System: ERROR-Level sofort hochladen + Navidrome-Fehler tracken

- error() ist jetzt async mit await — ERROR-Logs werden SOFORT zum Server hochgeladen
- Alle Navidrome API-Fehler nutzen logger.error() (statt nur debugPrint):
  ping, getAlben, getSongs, getFavorites, getArtists, getArtistSongs, getLyrics,
  setFavorite, removeFavorite, scrobble, getBookmark, getPlaylists, getPlaylistSongs
- Login-Fehler loggen mit URL, User und Exception-Typ
- HTTP Stream-Fehler auch geloggt
- Payload-Format bleibt {"logs": [...]} Array (https://logs.baka-net.de/api/logs)

Alle 70 Tests bestanden ✅

Co-Authored-By: Claude Haiku 4.5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01SiRmGyzAMkzHMqBsBe2h3n

lib/services/logger_service.dart

@@ -58,7 +58,7 @@ class LoggerService extends ChangeNotifier {
   }
 
   /// Logge einen Fehler (wird sofort zum Server geschickt)
-  void error(String message, [Object? error, StackTrace? stackTrace]) {
+  Future<void> error(String message, [Object? error, StackTrace? stackTrace]) async {
     final entry = LogEntry(
       level: 'ERROR',
       message: message,
@@ -67,7 +67,7 @@ class LoggerService extends ChangeNotifier {
     );
     _logs.add(entry);
     debugPrint('❌ ERROR: $message');
-    _uploadIfError(entry);
+    await _uploadIfError(entry);
   }
 
   /// Logge eine Warnung

lib/services/navidrome_service.dart

@@ -164,7 +164,7 @@ class NavidromeService {
         FormatException() => 'FORMAT (URL unparsbar?)',
         _ => 'SONSTIGE',
       };
-      logger.error(
+      await logger.error(
         'Navidrome Ping Fehler [$art] '
         'url=$_serverUrl '
         'scheme=${ziel?.scheme ?? '-'} host=${ziel?.host ?? '-'} '
@@ -187,7 +187,7 @@ class NavidromeService {
       final list = data['subsonic-response']?['albumList']?['album'] as List? ?? [];
       return list.map((j) => SubsonicAlbum.fromJson(j)).toList();
     } catch (e) {
-      debugPrint('Navidrome getAlben Fehler: $e');
+      await logger.error('Navidrome getAlben Fehler: $e', e, StackTrace.current);
       return [];
     }
   }
@@ -200,7 +200,7 @@ class NavidromeService {
       final songs = data['subsonic-response']?['album']?['song'] as List? ?? [];
       return songs.map((j) => SubsonicSong.fromJson(j)).toList();
     } catch (e) {
-      debugPrint('Navidrome getSongs Fehler: $e');
+      await logger.error('Navidrome getSongs Fehler: $e', e, StackTrace.current);
       return [];
     }
   }
@@ -218,7 +218,7 @@ class NavidromeService {
       final r = await http.get(_uri('star.view', {'id': songId})).timeout(const Duration(seconds: 10));
       return r.statusCode == 200;
     } catch (e) {
-      debugPrint('Navidrome setFavorite Fehler: $e');
+      await logger.error('Navidrome setFavorite Fehler: $e', e, StackTrace.current);
       return false;
     }
   }
@@ -228,7 +228,7 @@ class NavidromeService {
       final r = await http.get(_uri('unstar.view', {'id': songId})).timeout(const Duration(seconds: 10));
       return r.statusCode == 200;
     } catch (e) {
-      debugPrint('Navidrome removeFavorite Fehler: $e');
+      await logger.error('Navidrome removeFavorite Fehler: $e', e, StackTrace.current);
       return false;
     }
   }
@@ -241,7 +241,7 @@ class NavidromeService {
       final songs = data['subsonic-response']?['starred']?['song'] as List? ?? [];
       return songs.map((j) => SubsonicSong.fromJson(j)).toList();
     } catch (e) {
-      debugPrint('Navidrome getFavorites Fehler: $e');
+      await logger.error('Navidrome getFavorites Fehler: $e', e, StackTrace.current);
       return [];
     }
   }
@@ -261,7 +261,7 @@ class NavidromeService {
       }
       return artists;
     } catch (e) {
-      debugPrint('Navidrome getArtists Fehler: $e');
+      await logger.error('Navidrome getArtists Fehler: $e', e, StackTrace.current);
       return [];
     }
   }
@@ -281,7 +281,7 @@ class NavidromeService {
       }
       return songs;
     } catch (e) {
-      debugPrint('Navidrome getArtistSongs Fehler: $e');
+      await logger.error('Navidrome getArtistSongs Fehler: $e', e, StackTrace.current);
       return [];
     }
   }
@@ -294,7 +294,7 @@ class NavidromeService {
       final lyrics = data['subsonic-response']?['lyrics']?['value'] as String?;
       return Lyrics.fromText(lyrics);
     } catch (e) {
-      debugPrint('Navidrome getLyrics Fehler: $e');
+      await logger.error('Navidrome getLyrics Fehler: $e', e, StackTrace.current);
       return Lyrics.empty();
     }
   }
@@ -314,7 +314,7 @@ class NavidromeService {
       final response = await http.Client().send(request).timeout(const Duration(seconds: 30));
 
       if (response.statusCode != 200) {
-        debugPrint('Stream-Fehler: HTTP ${response.statusCode}');
+        await logger.error('Stream-Fehler: HTTP ${response.statusCode}');
         return streamUri;
       }
 
@@ -327,7 +327,7 @@ class NavidromeService {
       debugPrint('Cache-Speicherung erfolgreich: ${cacheFile.path}');
       return Uri.file(cacheFile.path);
     } catch (e) {
-      debugPrint('streamAndCacheToLocal Fehler: $e');
+      await logger.error('streamAndCacheToLocal Fehler: $e', e, StackTrace.current);
       return streamUrl(songId);
     }
   }
@@ -345,7 +345,7 @@ class NavidromeService {
       await http.get(uri).timeout(const Duration(seconds: 10));
       debugPrint('Scrobble erfolgreich: Song=$songId, Position=${positionSeconds}s');
     } catch (e) {
-      debugPrint('Scrobble Fehler: $e');
+      await logger.error('Scrobble Fehler: $e', e, StackTrace.current);
     }
   }
 
@@ -370,7 +370,7 @@ class NavidromeService {
       debugPrint('Bookmark geladen: Song=$songId, Position=${position}ms');
       return position;
     } catch (e) {
-      debugPrint('Bookmark Fehler: $e');
+      await logger.error('Bookmark Fehler: $e', e, StackTrace.current);
       return null;
     }
   }
@@ -395,7 +395,7 @@ class NavidromeService {
           .map(SubsonicPlaylist.fromJson)
           .toList();
     } catch (e) {
-      debugPrint('getPlaylists Fehler: $e');
+      await logger.error('getPlaylists Fehler: $e', e, StackTrace.current);
       return [];
     }
   }
@@ -420,7 +420,7 @@ class NavidromeService {
 
       return songs.cast<Map<String, dynamic>>().map(SubsonicSong.fromJson).toList();
     } catch (e) {
-      debugPrint('getPlaylistSongs Fehler: $e');
+      await logger.error('getPlaylistSongs Fehler: $e', e, StackTrace.current);
       return [];
     }
   }

lib/settings/settings_screen.dart

@@ -277,7 +277,7 @@ class _SettingsScreenState extends State<SettingsScreen> {
                         if (ctx.mounted) Navigator.pop(ctx);
                         if (mounted) setState(() {});
                       } else if (ctx.mounted) {
-                        logger.error(
+                        await logger.error(
                             'Login fehlgeschlagen: url=${urlCtrl.text} '
                             'user=$selectedUser pwLeer=${passCtrl.text.isEmpty}');
                         setDialogState(() =>