feat: Implement comprehensive torrent downloads management system

- Fix torrent platform service integration with Android engine
- Add downloads page with torrent list and progress tracking
- Implement torrent detail screen with file selection and priorities
- Create native video player with fullscreen controls
- Add WebView players for Vibix and Alloha
- Integrate corrected torrent engine with file selector
- Update dependencies for auto_route and video players

Features:
✅ Downloads screen with real-time torrent status
✅ File-level priority management and selection
✅ Three player options: native, Vibix WebView, Alloha WebView
✅ Torrent pause/resume/remove functionality
✅ Progress tracking and seeder/peer counts
✅ Video file detection and playback integration
✅ Fixed Android torrent engine method calls

This resolves torrent integration issues and provides complete
downloads management UI with video playback capabilities.

lib/presentation/providers/downloads_provider.dart

@@ -0,0 +1,171 @@
+import 'dart:async';
+import 'package:flutter/foundation.dart';
+import '../../data/services/torrent_platform_service.dart';
+import '../../data/models/torrent_info.dart';
+
+/// Provider для управления загрузками торрентов
+class DownloadsProvider with ChangeNotifier {
+  final List<TorrentInfo> _torrents = [];
+  Timer? _progressTimer;
+  bool _isLoading = false;
+  String? _error;
+
+  List<TorrentInfo> get torrents => List.unmodifiable(_torrents);
+  bool get isLoading => _isLoading;
+  String? get error => _error;
+
+  DownloadsProvider() {
+    _startProgressUpdates();
+  }
+
+  @override
+  void dispose() {
+    _progressTimer?.cancel();
+    super.dispose();
+  }
+
+  void _startProgressUpdates() {
+    _progressTimer = Timer.periodic(const Duration(seconds: 3), (timer) {
+      if (_torrents.isNotEmpty && !_isLoading) {
+        refreshDownloads();
+      }
+    });
+  }
+
+  /// Загрузить список активных загрузок
+  Future<void> refreshDownloads() async {
+    try {
+      _setLoading(true);
+      _setError(null);
+      
+      final progress = await TorrentPlatformService.getAllDownloads();
+      
+      // Получаем полную информацию о каждом торренте
+      _torrents.clear();
+      for (final progressItem in progress) {
+        try {
+          final torrentInfo = await TorrentPlatformService.getTorrent(progressItem.infoHash);
+          if (torrentInfo != null) {
+            _torrents.add(torrentInfo);
+          }
+        } catch (e) {
+          // Если не удалось получить полную информацию, создаем базовую
+          _torrents.add(TorrentInfo(
+            infoHash: progressItem.infoHash,
+            name: 'Торрент ${progressItem.infoHash.substring(0, 8)}',
+            totalSize: 0,
+            progress: progressItem.progress,
+            downloadSpeed: progressItem.downloadRate,
+            uploadSpeed: progressItem.uploadRate,
+            numSeeds: progressItem.numSeeds,
+            numPeers: progressItem.numPeers,
+            state: progressItem.state,
+            savePath: '/storage/emulated/0/Download/NeoMovies',
+            files: [],
+          ));
+        }
+      }
+      
+      _setLoading(false);
+    } catch (e) {
+      _setError(e.toString());
+      _setLoading(false);
+    }
+  }
+
+  /// Получить информацию о конкретном торренте
+  Future<TorrentInfo?> getTorrentInfo(String infoHash) async {
+    try {
+      return await TorrentPlatformService.getTorrent(infoHash);
+    } catch (e) {
+      debugPrint('Ошибка получения информации о торренте: $e');
+      return null;
+    }
+  }
+
+  /// Приостановить торрент
+  Future<void> pauseTorrent(String infoHash) async {
+    try {
+      await TorrentPlatformService.pauseDownload(infoHash);
+      await refreshDownloads(); // Обновляем список
+    } catch (e) {
+      _setError(e.toString());
+    }
+  }
+
+  /// Возобновить торрент
+  Future<void> resumeTorrent(String infoHash) async {
+    try {
+      await TorrentPlatformService.resumeDownload(infoHash);
+      await refreshDownloads(); // Обновляем список
+    } catch (e) {
+      _setError(e.toString());
+    }
+  }
+
+  /// Удалить торрент
+  Future<void> removeTorrent(String infoHash) async {
+    try {
+      await TorrentPlatformService.cancelDownload(infoHash);
+      await refreshDownloads(); // Обновляем список
+    } catch (e) {
+      _setError(e.toString());
+    }
+  }
+
+  /// Установить приоритет файла
+  Future<void> setFilePriority(String infoHash, int fileIndex, FilePriority priority) async {
+    try {
+      await TorrentPlatformService.setFilePriority(infoHash, fileIndex, priority);
+    } catch (e) {
+      _setError(e.toString());
+    }
+  }
+
+  /// Добавить новый торрент
+  Future<String?> addTorrent(String magnetUri, {String? savePath}) async {
+    try {
+      final infoHash = await TorrentPlatformService.addTorrent(
+        magnetUri: magnetUri,
+        savePath: savePath,
+      );
+      await refreshDownloads(); // Обновляем список
+      return infoHash;
+    } catch (e) {
+      _setError(e.toString());
+      return null;
+    }
+  }
+
+  /// Форматировать скорость
+  String formatSpeed(int bytesPerSecond) {
+    if (bytesPerSecond < 1024) return '${bytesPerSecond}B/s';
+    if (bytesPerSecond < 1024 * 1024) return '${(bytesPerSecond / 1024).toStringAsFixed(1)}KB/s';
+    return '${(bytesPerSecond / (1024 * 1024)).toStringAsFixed(1)}MB/s';
+  }
+
+  /// Форматировать продолжительность
+  String formatDuration(Duration duration) {
+    final hours = duration.inHours;
+    final minutes = duration.inMinutes.remainder(60);
+    final seconds = duration.inSeconds.remainder(60);
+
+    if (hours > 0) {
+      return '${hours}ч ${minutes}м ${seconds}с';
+    } else if (minutes > 0) {
+      return '${minutes}м ${seconds}с';
+    } else {
+      return '${seconds}с';
+    }
+  }
+
+  void _setLoading(bool loading) {
+    _isLoading = loading;
+    notifyListeners();
+  }
+
+  void _setError(String? error) {
+    _error = error;
+    notifyListeners();
+  }
+}