feat: open full e621 comic sequence in post pager with page indicator (v3.7.2)

lib/app/changelog.dart

@@ -1,4 +1,40 @@
 const prismaChangelog = [
+  PrismaChange(
+    version: '3.7.2',
+    title: 'Режим непрерывного чтения комиксов и серий e621',
+    bullets: [
+      'Мгновенное открытие комикса целиком: по нажатию «Читать весь комикс» загружаются все страницы серии в оригинальном порядке и открываются в полноэкранном ридере со свайпом (влево-вправо на мобильных, стрелками и кнопками на ПК).',
+      'Плавающий бейдж страниц: во время чтения комикса отображается аккуратный стеклянный индикатор номера страницы («Комикс • Стр. X из Y»).',
+      'Быстрое оглавление: отдельная кнопка сетки страниц для перехода на любую конкретную главу или страницу без потери последовательности чтения.',
+    ],
+  ),
+  PrismaChange(
+    version: '3.7.1',
+    title: 'Вкладка «e621» в Избранном и исправление листания комиксов',
+    bullets: [
+      'Отдельная вкладка «e621» в разделе «Избранное»: прямое отображение серверного избранного привязанного аккаунта e621 (своего или друга), плавная подгрузка при скролле и кнопка импорта в локальные закладки.',
+      'Исправление ошибки «Post not found» в комиксах: исправлен парсер ответов e621 для одиночных постов (/posts/<id>.json), теперь перелистывание страниц серий и переход по вариациям работают стабильно.',
+    ],
+  ),
+  PrismaChange(
+    version: '3.7.0',
+    title: 'Большое обновление e621: авторизация по API-ключу, комиксы/пулы, вариации постов и синхронизация',
+    bullets: [
+      'Окно авторизации e621 (Username + API Key): красивое модальное окно прямо в карточке источника e621 с быстрой проверкой ключа, снятием жесткого лимита в 2 тега при поиске и персональным User-Agent.',
+      'Комиксы и Пулы (Pools): удобная модальная панель для серий и комиксов с индикатором страниц, навигацией «Предыдущая/Следующая» и сеткой всех страниц серии для быстрого перехода.',
+      'Связанные посты и вариации (Parent/Child relations): карточка версий с быстрым переходом к родительскому арту и альтернативным вариациям (позы, одежда, скетчи).',
+      'Серверное голосование и синхронизация Избранного: возможность ставить лайки/дизлайки с отправкой на e621 и автоматическая синхронизация избранного при наличии API-ключа.',
+      'Защита Rate Limiting: интеллектуальное ограничение частоты запросов (до 2 rps), предотвращающее ошибки 503 и блокировки по IP.',
+    ],
+  ),
+  PrismaChange(
+    version: '3.6.5',
+    title: 'Исправление наложения превью на видеоплеер',
+    bullets: [
+      'Устранение наложения превью-картинки на воспроизводимое видео: убран фоновый слой постера под видеоплеером и восстановлен классический черный бэкграунд для правильного отображения границ и леттербоксинга видео любого формата.',
+      'Чистый рендеринг видео в карточках ленты: предпросмотр видео в ленте также изолирован от просвечивания подложки.',
+    ],
+  ),
   PrismaChange(
     version: '3.6.4',
     title: 'Полное исправление воспроизведения видео на ПК (устранение синего экрана)',

lib/backend/mappers/e621_mapper.dart

@@ -6,8 +6,19 @@ class E621Mapper {
     required String providerId,
     required String providerName,
   }) {
-    final posts = data is Map ? data['posts'] : data;
-    final items = posts is List ? posts : const [];
+    if (data is Map && data['post'] is Map) {
+      return [
+        postFromJson(
+          Map<String, dynamic>.from(data['post'] as Map),
+          providerId: providerId,
+          providerName: providerName,
+        ),
+      ];
+    }
+    final posts = data is Map ? (data['posts'] ?? data['post']) : data;
+    final items = posts is List
+        ? posts
+        : (posts is Map ? [posts] : const []);
     return items
         .whereType<Map>()
         .map((item) => postFromJson(
@@ -36,6 +47,38 @@ class E621Mapper {
       for (final entry in tagsMap.entries)
         entry.key: List<String>.from((entry.value as List?) ?? const []),
     }..removeWhere((_, value) => value.isEmpty);
+
+    final relationships = Map<String, dynamic>.from((json['relationships'] as Map?) ?? const {});
+    final parentId = relationships['parent_id']?.toString();
+    if (parentId != null && parentId.isNotEmpty && parentId != 'null') {
+      tagGroups['parent_id'] = [parentId];
+    }
+    final children = (relationships['children'] as List?)
+        ?.map((e) => e?.toString() ?? '')
+        .where((s) => s.isNotEmpty && s != 'null')
+        .toList();
+    if (children != null && children.isNotEmpty) {
+      tagGroups['children'] = children;
+    }
+
+    final rawPools = (json['pools'] as List?)
+        ?.map((e) => e?.toString() ?? '')
+        .where((s) => s.isNotEmpty)
+        .toList();
+    if (rawPools != null && rawPools.isNotEmpty) {
+      tagGroups['pools'] = rawPools;
+    }
+
+    final favCount = json['fav_count'];
+    if (favCount != null) {
+      tagGroups['fav_count'] = [favCount.toString()];
+    }
+
+    final desc = _string(json['description']);
+    if (desc.isNotEmpty) {
+      tagGroups['description'] = [desc];
+    }
+
     final tags = tagGroups.values.expand((items) => items).toSet().toList();
     final fileUrl = _string(file['url']);
     return Post(

lib/backend/models/e621_pool.dart

@@ -0,0 +1,58 @@
+class E621Pool {
+  const E621Pool({
+    required this.id,
+    required this.name,
+    required this.description,
+    required this.postIds,
+    required this.postCount,
+    required this.category,
+    required this.isActive,
+    this.creatorName,
+  });
+
+  final int id;
+  final String name;
+  final String description;
+  final List<String> postIds;
+  final int postCount;
+  final String category; // 'series' or 'collection'
+  final bool isActive;
+  final String? creatorName;
+
+  String get cleanTitle => name.replaceAll('_', ' ');
+
+  int pageOf(String postId) {
+    final idx = postIds.indexOf(postId);
+    return idx >= 0 ? idx + 1 : 0;
+  }
+
+  String? nextPostId(String postId) {
+    final idx = postIds.indexOf(postId);
+    if (idx >= 0 && idx < postIds.length - 1) {
+      return postIds[idx + 1];
+    }
+    return null;
+  }
+
+  String? previousPostId(String postId) {
+    final idx = postIds.indexOf(postId);
+    if (idx > 0) {
+      return postIds[idx - 1];
+    }
+    return null;
+  }
+
+  factory E621Pool.fromJson(Map<String, dynamic> json) {
+    final rawPostIds = (json['post_ids'] as List?) ?? const [];
+    return E621Pool(
+      id: (json['id'] as num?)?.toInt() ?? 0,
+      name: (json['name'] ?? '').toString(),
+      description: (json['description'] ?? '').toString(),
+      postIds: rawPostIds.map((e) => e.toString()).toList(),
+      postCount: (json['post_count'] as num?)?.toInt() ?? rawPostIds.length,
+      category: (json['category'] ?? 'series').toString(),
+      isActive: (json['is_active'] as bool?) ?? true,
+      creatorName: json['creator_name']?.toString(),
+    );
+  }
+}

lib/backend/models/post.dart

@@ -62,6 +62,27 @@ class Post {
 
   String? get description => commentary;
 
+  String? get parentId {
+    final list = tagGroups['parent_id'];
+    return (list != null && list.isNotEmpty && list.first.trim().isNotEmpty)
+        ? list.first.trim()
+        : null;
+  }
+
+  List<String> get childrenIds => tagGroups['children'] ?? const [];
+
+  List<String> get poolIds => tagGroups['pools'] ?? const [];
+
+  bool get hasRelations =>
+      (parentId != null && parentId!.isNotEmpty) || childrenIds.isNotEmpty;
+
+  bool get hasPools => poolIds.isNotEmpty;
+
+  int? get favCount {
+    final raw = tagGroups['fav_count']?.firstOrNull;
+    return raw != null ? int.tryParse(raw) : null;
+  }
+
   String? get title {
     final list = tagGroups['copyright'];
     if (list != null && list.isNotEmpty) {

lib/backend/providers/e621_provider.dart

@@ -2,6 +2,7 @@ import 'package:dio/dio.dart';
 
 import '../../core/http/dio_client.dart';
 import '../mappers/e621_mapper.dart';
+import '../models/e621_pool.dart';
 import '../models/post.dart';
 import '../models/post_comment.dart';
 import '../models/provider_health.dart';
@@ -33,6 +34,34 @@ class E621Provider
   final Dio _dio;
   final Map<String, String> _queryParameters;
 
+  static DateTime _lastRequestTime = DateTime.fromMillisecondsSinceEpoch(0);
+
+  static Future<void> _throttle() async {
+    final now = DateTime.now();
+    final diff = now.difference(_lastRequestTime);
+    if (diff.inMilliseconds < 500) {
+      final waitMs = 500 - diff.inMilliseconds;
+      await Future<void>.delayed(Duration(milliseconds: waitMs));
+    }
+    _lastRequestTime = DateTime.now();
+  }
+
+  bool get isAuthorized =>
+      _queryParameters.containsKey('login') ||
+      _queryParameters.containsKey('query.login') ||
+      _dio.options.headers.containsKey('Authorization');
+
+  String? get login =>
+      _queryParameters['login'] ?? _queryParameters['query.login'];
+
+  Future<List<Post>> getFavorites({int page = 1, int limit = 50}) async {
+    final currentLogin = login?.trim();
+    final targetTag = (currentLogin != null && currentLogin.isNotEmpty)
+        ? 'fav:$currentLogin'
+        : 'fav:me';
+    return searchPosts(tags: [targetTag], page: page - 1, limit: limit);
+  }
+
   @override
   String postPageUrl(Post post) => '$baseUrl/posts/${post.id}';
 
@@ -44,6 +73,7 @@ class E621Provider
     String? rating,
     TopPeriodFilter topPeriod = TopPeriodFilter.none,
   }) async {
+    await _throttle();
     final response = await _dio.get<dynamic>(
       '/posts.json',
       queryParameters: {
@@ -66,6 +96,7 @@ class E621Provider
 
   @override
   Future<Post?> getPost(String id) async {
+    await _throttle();
     final response = await _dio.get<dynamic>(
       '/posts/$id.json',
       queryParameters: _queryParameters,
@@ -78,6 +109,109 @@ class E621Provider
     return posts.isEmpty ? null : posts.first;
   }
 
+  Future<E621Pool?> getPool(String poolId) async {
+    await _throttle();
+    try {
+      final response = await _dio.get<dynamic>(
+        '/pools/$poolId.json',
+        queryParameters: _queryParameters,
+      );
+      if (response.data is Map) {
+        return E621Pool.fromJson(Map<String, dynamic>.from(response.data as Map));
+      }
+    } catch (_) {}
+    return null;
+  }
+
+  Future<List<Post>> getPoolPosts(String poolId) async {
+    final pool = await getPool(poolId);
+    if (pool == null || pool.postIds.isEmpty) return const [];
+
+    final fetchedMap = <String, Post>{};
+    int page = 1;
+    while (true) {
+      await _throttle();
+      try {
+        final response = await _dio.get<dynamic>(
+          '/posts.json',
+          queryParameters: {
+            'page': page,
+            'limit': isAuthorized ? 320 : 75,
+            'tags': 'pool:$poolId',
+            ..._queryParameters,
+          },
+        );
+        final items = E621Mapper.postsFromResponse(
+          response.data,
+          providerId: id,
+          providerName: name,
+        );
+        if (items.isEmpty) break;
+        for (final item in items) {
+          fetchedMap[item.id] = item;
+        }
+        if (items.length < (isAuthorized ? 320 : 75) ||
+            fetchedMap.length >= pool.postIds.length) {
+          break;
+        }
+        page++;
+      } catch (_) {
+        break;
+      }
+    }
+
+    final ordered = <Post>[];
+    for (final id in pool.postIds) {
+      if (fetchedMap.containsKey(id)) {
+        ordered.add(fetchedMap[id]!);
+      }
+    }
+    return ordered.isNotEmpty ? ordered : fetchedMap.values.toList();
+  }
+
+  Future<bool> votePost(String postId, int score) async {
+    await _throttle();
+    try {
+      final response = await _dio.post<dynamic>(
+        '/posts/$postId/votes.json',
+        data: {'score': score, 'no_unvote': 'true'},
+        queryParameters: _queryParameters,
+        options: Options(contentType: Headers.formUrlEncodedContentType),
+      );
+      return response.statusCode == 200 || response.statusCode == 201;
+    } catch (_) {
+      return false;
+    }
+  }
+
+  Future<bool> addFavorite(String postId) async {
+    await _throttle();
+    try {
+      final response = await _dio.post<dynamic>(
+        '/favorites.json',
+        data: {'post_id': postId},
+        queryParameters: _queryParameters,
+        options: Options(contentType: Headers.formUrlEncodedContentType),
+      );
+      return response.statusCode == 200 || response.statusCode == 201;
+    } catch (_) {
+      return false;
+    }
+  }
+
+  Future<bool> removeFavorite(String postId) async {
+    await _throttle();
+    try {
+      final response = await _dio.delete<dynamic>(
+        '/favorites/$postId.json',
+        queryParameters: _queryParameters,
+      );
+      return response.statusCode == 200 || response.statusCode == 204;
+    } catch (_) {
+      return false;
+    }
+  }
+
   @override
   Future<ProviderHealth> checkHealth() async {
     final startedAt = DateTime.now();
@@ -109,6 +243,7 @@ class E621Provider
   Future<List<TagSuggestion>> suggestTags(String query,
       {int limit = 20}) async {
     if (query.trim().isEmpty) return const [];
+    await _throttle();
     final response = await _dio.get<dynamic>(
       '/tags.json',
       queryParameters: {
@@ -136,6 +271,7 @@ class E621Provider
 
   @override
   Future<List<PostComment>> getComments(String postId) async {
+    await _throttle();
     final response = await _dio.get<dynamic>(
       '/comments.json',
       queryParameters: {

lib/backend/providers/provider_factory.dart

@@ -1,3 +1,5 @@
+import 'dart:convert';
+
 import '../../core/http/dio_client.dart';
 import '../models/content_provider_config.dart';
 import 'content_provider.dart';
@@ -20,6 +22,17 @@ class ProviderFactory {
         if (entry.key.startsWith('query.') && entry.value.trim().isNotEmpty)
           entry.key.substring('query.'.length): entry.value.trim(),
     };
+
+    if (config.apiType.toLowerCase() == 'e621') {
+      final login = queryParameters['login'] ?? headers['login'];
+      final apiKey = queryParameters['api_key'] ?? headers['api_key'];
+      if (login != null && apiKey != null && login.isNotEmpty && apiKey.isNotEmpty) {
+        final basicAuth = base64Encode(utf8.encode('$login:$apiKey'));
+        headers['Authorization'] = 'Basic $basicAuth';
+        headers['User-Agent'] = 'Prisma/3.6.6 (by $login on e621)';
+      }
+    }
+
     final client = DioClient(
       baseUrl: config.baseUrl,
       timeout: Duration(seconds: config.timeoutSeconds),

lib/backend/providers/provider_manager.dart

@@ -144,6 +144,14 @@ class ProviderManager {
     });
   }
 
+  Future<ContentProvider?> getProviderInstance(String id) async {
+    final result = await _repository.getProvider(id);
+    if (result is Success<ContentProviderConfig?> && result.data != null) {
+      return _factory.create(result.data!);
+    }
+    return null;
+  }
+
   Future<Result<List<ProviderHealth>>> checkAll({int concurrency = 3}) async {
     final providersResult = await activeProviders();
     if (providersResult is Error<List<ContentProvider>>) {

lib/features/favorites/presentation/favorites_screen.dart

@@ -15,6 +15,7 @@ import '../../../shared/widgets/empty_view.dart';
 import '../../../shared/widgets/error_view.dart';
 import '../../../shared/widgets/post_masonry_grid.dart';
 import 'favorites_controller.dart';
+import 'widgets/e621_favorites_view.dart';
 
 enum FavoriteMediaType { all, video, image }
 enum OfflineSortOption { dateAddedDesc, sizeDesc, artist }
@@ -315,6 +316,17 @@ class _FavoritesScreenState extends ConsumerState<FavoritesScreen> {
                                   overflow: TextOverflow.ellipsis,
                                 ),
                               ),
+                              const ButtonSegment(
+                                value: 3,
+                                icon: Icon(Icons.hub_rounded,
+                                    size: 18, color: Color(0xFF0077EE)),
+                                label: Text(
+                                  'e621',
+                                  style: TextStyle(
+                                      fontSize: 12, fontWeight: FontWeight.w600),
+                                  overflow: TextOverflow.ellipsis,
+                                ),
+                              ),
                             ],
                             selected: {_tabIndex},
                             onSelectionChanged: (value) {
@@ -333,7 +345,7 @@ class _FavoritesScreenState extends ConsumerState<FavoritesScreen> {
               ),
 
               // Media Type Filter Chips (for Tab 0 and Tab 1)
-              if (_tabIndex != 2)
+              if (_tabIndex != 2 && _tabIndex != 3)
                 Padding(
                   padding: const EdgeInsets.symmetric(horizontal: 16, vertical: 4),
                   child: Row(
@@ -399,6 +411,10 @@ class _FavoritesScreenState extends ConsumerState<FavoritesScreen> {
                       downloaded.keys.toSet(),
                       isRu,
                     ),
+                  3 => E621FavoritesView(
+                      settings: settings,
+                      isRu: isRu,
+                    ),
                   _ => _buildAllView(
                       allPosts,
                       settings,

lib/features/favorites/presentation/widgets/e621_favorites_view.dart

@@ -0,0 +1,464 @@
+import 'dart:ui';
+
+import 'package:flutter/material.dart';
+import 'package:flutter/services.dart';
+import 'package:flutter_riverpod/flutter_riverpod.dart';
+
+import '../../../../app/app_navigator.dart';
+import '../../../../app/responsive.dart';
+import '../../../../backend/backend.dart';
+import '../../../../backend/providers/e621_provider.dart';
+import '../../../../shared/widgets/empty_view.dart';
+import '../../../../shared/widgets/post_masonry_grid.dart';
+import '../../../providers/presentation/providers_controller.dart';
+import '../../../providers/presentation/widgets/e621_auth_dialog.dart';
+import '../favorites_controller.dart';
+
+class E621FavoritesView extends ConsumerStatefulWidget {
+  const E621FavoritesView({
+    required this.settings,
+    required this.isRu,
+    super.key,
+  });
+
+  final AppSettings settings;
+  final bool isRu;
+
+  @override
+  ConsumerState<E621FavoritesView> createState() => _E621FavoritesViewState();
+}
+
+class _E621FavoritesViewState extends ConsumerState<E621FavoritesView> {
+  final List<Post> _posts = [];
+  final ScrollController _scrollController = ScrollController();
+  int _page = 1;
+  bool _isLoading = false;
+  bool _hasMore = true;
+  String? _error;
+  String? _currentLogin;
+  bool _isImporting = false;
+
+  @override
+  void initState() {
+    super.initState();
+    _scrollController.addListener(_onScroll);
+    _loadInitial();
+  }
+
+  @override
+  void dispose() {
+    _scrollController.dispose();
+    super.dispose();
+  }
+
+  void _onScroll() {
+    if (_scrollController.position.pixels >=
+            _scrollController.position.maxScrollExtent - 400 &&
+        !_isLoading &&
+        _hasMore) {
+      _loadNextPage();
+    }
+  }
+
+  Future<E621Provider?> _getE621Provider() async {
+    final instance = await ref
+        .read(providerManagerProvider)
+        .getProviderInstance('e621');
+    return instance is E621Provider ? instance : null;
+  }
+
+  Future<void> _loadInitial() async {
+    setState(() {
+      _isLoading = true;
+      _error = null;
+      _posts.clear();
+      _page = 1;
+      _hasMore = true;
+    });
+
+    try {
+      final provider = await _getE621Provider();
+      if (provider == null) {
+        setState(() {
+          _isLoading = false;
+          _error = widget.isRu
+              ? 'Источник e621 не найден'
+              : 'e621 provider not found';
+        });
+        return;
+      }
+
+      final login = provider.login?.trim();
+      setState(() => _currentLogin = login);
+
+      if (login == null || login.isEmpty) {
+        setState(() => _isLoading = false);
+        return;
+      }
+
+      final items = await provider.getFavorites(page: 1, limit: 50);
+      if (mounted) {
+        setState(() {
+          _posts.addAll(items);
+          _isLoading = false;
+          _hasMore = items.length >= 25;
+          _page = 2;
+        });
+      }
+    } catch (e) {
+      if (mounted) {
+        setState(() {
+          _error = widget.isRu ? 'Ошибка загрузки: $e' : 'Loading error: $e';
+          _isLoading = false;
+        });
+      }
+    }
+  }
+
+  Future<void> _loadNextPage() async {
+    if (_isLoading || !_hasMore) return;
+    setState(() => _isLoading = true);
+
+    try {
+      final provider = await _getE621Provider();
+      if (provider == null) {
+        setState(() => _isLoading = false);
+        return;
+      }
+
+      final items = await provider.getFavorites(page: _page, limit: 50);
+      if (mounted) {
+        setState(() {
+          final existingIds = _posts.map((p) => p.id).toSet();
+          final newItems =
+              items.where((p) => !existingIds.contains(p.id)).toList();
+          _posts.addAll(newItems);
+          _isLoading = false;
+          _hasMore = items.length >= 25;
+          _page++;
+        });
+      }
+    } catch (_) {
+      if (mounted) {
+        setState(() => _isLoading = false);
+      }
+    }
+  }
+
+  Future<void> _importAllToLocal() async {
+    if (_posts.isEmpty || _isImporting) return;
+    setState(() => _isImporting = true);
+    HapticFeedback.mediumImpact();
+
+    final favService = ref.read(favoriteServiceProvider);
+    int imported = 0;
+    for (final post in _posts) {
+      await favService.addFavorite(post);
+      imported++;
+    }
+
+    ref.invalidate(favoriteKeysProvider);
+    ref.invalidate(favoritesControllerProvider);
+
+    if (mounted) {
+      setState(() => _isImporting = false);
+      ScaffoldMessenger.of(context).showSnackBar(
+        SnackBar(
+          content: Text(
+            widget.isRu
+                ? 'Импортировано $imported постов в локальное избранное!'
+                : 'Imported $imported posts to local favorites!',
+          ),
+          duration: const Duration(seconds: 3),
+        ),
+      );
+    }
+  }
+
+  @override
+  Widget build(BuildContext context) {
+    final theme = Theme.of(context);
+    final isDark = theme.brightness == Brightness.dark;
+    final downloaded = ref.watch(
+          downloadedMediaByKeysProvider(
+            _posts.map((post) => post.cacheKey).toList(growable: false),
+          ),
+        ).value ??
+        const <String, DownloadedMedia>{};
+
+    final favoriteKeys = ref.watch(favoriteKeysProvider).value ?? <String>{};
+
+    // If no login is set
+    if (_currentLogin == null || _currentLogin!.isEmpty) {
+      return Center(
+        child: Padding(
+          padding: const EdgeInsets.all(28),
+          child: Column(
+            mainAxisSize: MainAxisSize.min,
+            children: [
+              Container(
+                width: 68,
+                height: 68,
+                decoration: BoxDecoration(
+                  gradient: const LinearGradient(
+                    colors: [Color(0xFF0055AA), Color(0xFF0088FF)],
+                    begin: Alignment.topLeft,
+                    end: Alignment.bottomRight,
+                  ),
+                  borderRadius: BorderRadius.circular(22),
+                  boxShadow: [
+                    BoxShadow(
+                      color: const Color(0xFF0055AA).withValues(alpha: 0.35),
+                      blurRadius: 16,
+                      offset: const Offset(0, 6),
+                    ),
+                  ],
+                ),
+                child: const Icon(
+                  Icons.hub_rounded,
+                  size: 34,
+                  color: Colors.white,
+                ),
+              ),
+              const SizedBox(height: 18),
+              Text(
+                widget.isRu ? 'Аккаунт e621 не указан' : 'e621 account not set',
+                style: theme.textTheme.titleLarge?.copyWith(
+                  fontWeight: FontWeight.bold,
+                ),
+              ),
+              const SizedBox(height: 8),
+              ConstrainedBox(
+                constraints: const BoxConstraints(maxWidth: 380),
+                child: Text(
+                  widget.isRu
+                      ? 'Чтобы смотреть избранное (своё или друга) прямо здесь, укажите логин и API-ключ в настройках источника e621.'
+                      : 'To browse favorites directly here, provide your e621 login and API key.',
+                  textAlign: TextAlign.center,
+                  style: theme.textTheme.bodyMedium?.copyWith(
+                    color: theme.colorScheme.onSurfaceVariant,
+                  ),
+                ),
+              ),
+              const SizedBox(height: 22),
+              FilledButton.icon(
+                onPressed: () async {
+                  final configs =
+                      ref.read(providersControllerProvider).value ?? [];
+                  final e621Config = configs.firstWhere(
+                    (p) => p.apiType.toLowerCase() == 'e621',
+                    orElse: () => configs.first,
+                  );
+                  await E621AuthDialog.show(
+                    context,
+                    config: e621Config,
+                    onSaved: (updated) {
+                      ref
+                          .read(providersControllerProvider.notifier)
+                          .save(updated);
+                      _loadInitial();
+                    },
+                  );
+                },
+                icon: const Icon(Icons.vpn_key_rounded, size: 18),
+                label: Text(
+                  widget.isRu
+                      ? 'Войти / Настроить API-ключ e621'
+                      : 'Set e621 API Key',
+                ),
+                style: FilledButton.styleFrom(
+                  backgroundColor: const Color(0xFF0055AA),
+                  padding: const EdgeInsets.symmetric(
+                      horizontal: 20, vertical: 12),
+                  shape: RoundedRectangleBorder(
+                    borderRadius: BorderRadius.circular(16),
+                  ),
+                ),
+              ),
+            ],
+          ),
+        ),
+      );
+    }
+
+    return RefreshIndicator(
+      onRefresh: _loadInitial,
+      child: Column(
+        children: [
+          // Header Banner
+          Padding(
+            padding: const EdgeInsets.fromLTRB(16, 4, 16, 8),
+            child: ClipRRect(
+              borderRadius: BorderRadius.circular(18),
+              child: BackdropFilter(
+                filter: ImageFilter.blur(sigmaX: 14, sigmaY: 14),
+                child: Container(
+                  padding:
+                      const EdgeInsets.symmetric(horizontal: 14, vertical: 10),
+                  decoration: BoxDecoration(
+                    color: isDark
+                        ? const Color(0xFF131A26).withValues(alpha: 0.85)
+                        : Colors.white.withValues(alpha: 0.85),
+                    borderRadius: BorderRadius.circular(18),
+                    border: Border.all(
+                      color: isDark
+                          ? const Color(0xFF0055AA).withValues(alpha: 0.35)
+                          : const Color(0xFF0055AA).withValues(alpha: 0.20),
+                    ),
+                  ),
+                  child: Row(
+                    children: [
+                      Container(
+                        width: 38,
+                        height: 38,
+                        decoration: BoxDecoration(
+                          gradient: const LinearGradient(
+                            colors: [Color(0xFF0055AA), Color(0xFF0077EE)],
+                          ),
+                          borderRadius: BorderRadius.circular(12),
+                        ),
+                        child: const Icon(
+                          Icons.hub_rounded,
+                          color: Colors.white,
+                          size: 20,
+                        ),
+                      ),
+                      const SizedBox(width: 10),
+                      Expanded(
+                        child: Column(
+                          crossAxisAlignment: CrossAxisAlignment.start,
+                          children: [
+                            Text(
+                              'Избранное: @$_currentLogin',
+                              style: const TextStyle(
+                                fontWeight: FontWeight.bold,
+                                fontSize: 13,
+                              ),
+                              maxLines: 1,
+                              overflow: TextOverflow.ellipsis,
+                            ),
+                            Text(
+                              widget.isRu
+                                  ? '${_posts.length} постов на сервере e621'
+                                  : '${_posts.length} posts on e621',
+                              style: TextStyle(
+                                fontSize: 11,
+                                color: theme.colorScheme.onSurfaceVariant,
+                              ),
+                            ),
+                          ],
+                        ),
+                      ),
+                      if (_posts.isNotEmpty)
+                        IconButton.filledTonal(
+                          tooltip: widget.isRu
+                              ? 'Импортировать в локальное избранное'
+                              : 'Import to local favorites',
+                          onPressed: _isImporting ? null : _importAllToLocal,
+                          icon: _isImporting
+                              ? const SizedBox(
+                                  width: 16,
+                                  height: 16,
+                                  child: CircularProgressIndicator(
+                                      strokeWidth: 2),
+                                )
+                              : const Icon(Icons.download_rounded, size: 18),
+                        ),
+                      const SizedBox(width: 4),
+                      IconButton.filledTonal(
+                        tooltip: widget.isRu ? 'Обновить' : 'Refresh',
+                        onPressed: _isLoading ? null : _loadInitial,
+                        icon: const Icon(Icons.refresh_rounded, size: 18),
+                      ),
+                    ],
+                  ),
+                ),
+              ),
+            ),
+          ),
+
+          // Content
+          Expanded(
+            child: _isLoading && _posts.isEmpty
+                ? const Center(child: CircularProgressIndicator())
+                : _error != null && _posts.isEmpty
+                    ? Center(
+                        child: Column(
+                          mainAxisSize: MainAxisSize.min,
+                          children: [
+                            const Icon(Icons.error_outline_rounded,
+                                size: 40, color: Color(0xFFEF4444)),
+                            const SizedBox(height: 12),
+                            Text(_error!),
+                            const SizedBox(height: 12),
+                            FilledButton.tonal(
+                              onPressed: _loadInitial,
+                              child: Text(widget.isRu ? 'Повторить' : 'Retry'),
+                            ),
+                          ],
+                        ),
+                      )
+                    : _posts.isEmpty
+                        ? Center(
+                            child: EmptyView(
+                              title: widget.isRu
+                                  ? 'У пользователя нет избранных постов'
+                                  : 'No favorite posts for this user',
+                            ),
+                          )
+                        : ListView(
+                            controller: _scrollController,
+                            padding: const EdgeInsets.symmetric(horizontal: 8),
+                            children: [
+                              PostMasonryGrid(
+                                posts: _posts,
+                                columns: Responsive.columnsFor(
+                                  context,
+                                  mobileColumns: widget.settings.mobileColumns,
+                                  desktopColumns:
+                                      widget.settings.desktopColumns,
+                                ),
+                                blurExplicit:
+                                    widget.settings.blurExplicitContent,
+                                showBadges: widget.settings.showPostBadges,
+                                nsfwEnabled: widget.settings.nsfwEnabled,
+                                mediaQualityMode: MediaQualityMode.fromName(
+                                  widget.settings.mediaQualityMode,
+                                ),
+                                favoriteKeys: favoriteKeys,
+                                downloadedKeys: downloaded.keys.toSet(),
+                                onOpen: (post) => AppNavigator.openPost(
+                                  context,
+                                  post: post,
+                                  postsList: _posts,
+                                ),
+                                onFavorite: (post) async {
+                                  final isFav =
+                                      favoriteKeys.contains(post.cacheKey);
+                                  final favService =
+                                      ref.read(favoriteServiceProvider);
+                                  if (isFav) {
+                                    await favService.removeFavorite(
+                                        post.id, post.providerId);
+                                  } else {
+                                    await favService.addFavorite(post);
+                                  }
+                                  ref.invalidate(favoriteKeysProvider);
+                                  ref.invalidate(favoritesControllerProvider);
+                                },
+                              ),
+                              if (_isLoading)
+                                const Padding(
+                                  padding: EdgeInsets.all(20),
+                                  child: Center(
+                                    child: CircularProgressIndicator(),
+                                  ),
+                                ),
+                            ],
+                          ),
+          ),
+        ],
+      ),
+    );
+  }
+}

lib/features/post/presentation/post_details_screen.dart

@@ -1,3 +1,4 @@
+import 'dart:async';
 import 'dart:ui';
 import 'package:flutter/material.dart';
 import 'package:flutter/services.dart';
@@ -28,7 +29,10 @@ import 'post_details_controller.dart';
 import 'widgets/cloud_mirrors_card.dart';
 import 'widgets/post_action_bar.dart';
 import 'widgets/post_media_viewer.dart';
+import 'widgets/post_pools_card.dart';
+import 'widgets/post_relations_card.dart';
 import 'widgets/post_tags_panel.dart';
+import '../../../backend/providers/e621_provider.dart';
 
 final postCommentsProvider =
     FutureProvider.family<List<PostComment>, PostDetailsArgs>(
@@ -39,6 +43,11 @@ final postCommentsProvider =
   return result is Success<List<PostComment>> ? result.data : const [];
 });
 
+final postProviderInstanceProvider =
+    FutureProvider.family<ContentProvider?, String>((ref, providerId) async {
+  return ref.watch(providerManagerProvider).getProviderInstance(providerId);
+});
+
 class PostDetailsScreen extends ConsumerWidget {
   const PostDetailsScreen({
     required this.providerId,
@@ -123,6 +132,11 @@ class PostDetailsScreen extends ConsumerWidget {
                   (post.commentary != null &&
                       post.commentary!.trim().isNotEmpty));
 
+          final providerInstance =
+              ref.watch(postProviderInstanceProvider(post.providerId)).value;
+          final e621Provider =
+              providerInstance is E621Provider ? providerInstance : null;
+
           if (Responsive.isMobile(context)) {
             if (currentIndex >= 0 && feedPosts.length > 1) {
               return _MobilePostPager(
@@ -361,7 +375,28 @@ class PostDetailsScreen extends ConsumerWidget {
                       strings: strings,
                       localMedia: localMedia,
                       fileSizeBytes: fileSizeBytes,
+                      e621Provider: e621Provider,
                     ),
+                    if (post.hasRelations) ...[
+                      const SizedBox(height: 16),
+                      PostRelationsCard(
+                        post: post,
+                        onOpenPostId: (targetId) =>
+                            _openPostById(context, post.providerId, targetId),
+                      ),
+                    ],
+                    if (post.hasPools && e621Provider != null) ...[
+                      const SizedBox(height: 16),
+                      PostPoolsCard(
+                        post: post,
+                        provider: e621Provider,
+                        onOpenComic: (poolId, currentPost, [targetId]) =>
+                            _openComic(context, e621Provider, poolId,
+                                currentPost, targetId),
+                        onOpenPostId: (targetId) =>
+                            _openPostById(context, post.providerId, targetId),
+                      ),
+                    ],
                     if (shouldShowCloudCard) ...[
                       const SizedBox(height: 16),
                       CloudMirrorsCard(
@@ -470,6 +505,11 @@ class PostDetailsScreen extends ConsumerWidget {
             (post.commentary != null &&
                 post.commentary!.trim().isNotEmpty));
 
+    final providerInstance =
+        ref.watch(postProviderInstanceProvider(post.providerId)).value;
+    final e621Provider =
+        providerInstance is E621Provider ? providerInstance : null;
+
     return GestureDetector(
       behavior: HitTestBehavior.translucent,
       onVerticalDragEnd: (details) {
@@ -596,7 +636,27 @@ class PostDetailsScreen extends ConsumerWidget {
             strings: strings,
             localMedia: localMedia,
             fileSizeBytes: fileSizeBytes,
+            e621Provider: e621Provider,
           ),
+          if (post.hasRelations) ...[
+            const SizedBox(height: 12),
+            PostRelationsCard(
+              post: post,
+              onOpenPostId: (targetId) =>
+                  _openPostById(context, post.providerId, targetId),
+            ),
+          ],
+          if (post.hasPools && e621Provider != null) ...[
+            const SizedBox(height: 12),
+            PostPoolsCard(
+              post: post,
+              provider: e621Provider,
+              onOpenComic: (poolId, currentPost, [targetId]) =>
+                  _openComic(context, e621Provider, poolId, currentPost, targetId),
+              onOpenPostId: (targetId) =>
+                  _openPostById(context, post.providerId, targetId),
+            ),
+          ],
           if (shouldShowCloudCard) ...[
             const SizedBox(height: 12),
             CloudMirrorsCard(
@@ -805,18 +865,101 @@ class PostDetailsScreen extends ConsumerWidget {
     Post post,
     Set<String> favoriteKeys,
   ) async {
-    if (favoriteKeys.contains(post.cacheKey)) {
+    final isFav = favoriteKeys.contains(post.cacheKey);
+    if (isFav) {
       await ref
           .read(favoriteServiceProvider)
           .removeFavorite(post.id, post.providerId);
+      final provider = await ref
+          .read(providerManagerProvider)
+          .getProviderInstance(post.providerId);
+      if (provider is E621Provider && provider.isAuthorized) {
+        unawaited(provider.removeFavorite(post.id));
+      }
     } else {
       await ref.read(favoriteServiceProvider).addFavorite(post);
       await _maybeAutoDownloadFavorite(ref, post);
+      final provider = await ref
+          .read(providerManagerProvider)
+          .getProviderInstance(post.providerId);
+      if (provider is E621Provider && provider.isAuthorized) {
+        unawaited(provider.addFavorite(post.id));
+      }
     }
     ref.invalidate(favoriteKeysProvider);
     ref.invalidate(favoritesControllerProvider);
   }
 
+  Future<void> _openComic(
+    BuildContext context,
+    E621Provider provider,
+    String poolId,
+    Post currentPost, [
+    String? targetId,
+  ]) async {
+    final isRu = Localizations.maybeLocaleOf(context)?.languageCode == 'ru';
+    ScaffoldMessenger.of(context).showSnackBar(
+      SnackBar(
+        content: Row(
+          children: [
+            const SizedBox(
+              width: 16,
+              height: 16,
+              child: CircularProgressIndicator(
+                  strokeWidth: 2, color: Colors.white),
+            ),
+            const SizedBox(width: 12),
+            Text(isRu ? 'Загрузка комикса...' : 'Loading comic...'),
+          ],
+        ),
+        duration: const Duration(seconds: 4),
+      ),
+    );
+
+    final poolPosts = await provider.getPoolPosts(poolId);
+    if (!context.mounted) return;
+    ScaffoldMessenger.of(context).hideCurrentSnackBar();
+
+    if (poolPosts.isEmpty) {
+      ScaffoldMessenger.of(context).showSnackBar(
+        SnackBar(
+          content: Text(isRu
+              ? 'Не удалось загрузить страницы комикса'
+              : 'Could not load comic pages'),
+        ),
+      );
+      return;
+    }
+
+    final idToFind = targetId ?? currentPost.id;
+    final targetIndex = poolPosts.indexWhere((p) => p.id == idToFind);
+    final startPost =
+        targetIndex >= 0 ? poolPosts[targetIndex] : poolPosts.first;
+
+    Navigator.of(context).push(
+      MaterialPageRoute<void>(
+        builder: (ctx) => PostDetailsScreen(
+          providerId: provider.id,
+          postId: startPost.id,
+          initialPost: startPost,
+          postsList: poolPosts,
+        ),
+      ),
+    );
+  }
+
+  void _openPostById(
+      BuildContext context, String providerId, String targetId) {
+    Navigator.of(context).push(
+      MaterialPageRoute<void>(
+        builder: (ctx) => PostDetailsScreen(
+          providerId: providerId,
+          postId: targetId,
+        ),
+      ),
+    );
+  }
+
   Future<void> _maybeAutoDownloadFavorite(WidgetRef ref, Post post) async {
     final settings =
         ref.read(appSettingsProvider).value ?? AppSettings.defaults;
@@ -973,10 +1116,12 @@ class _MobilePostPager extends StatefulWidget {
 class _MobilePostPagerState extends State<_MobilePostPager> {
   late final PageController _controller;
   bool _mediaGestureLocked = false;
+  late int _currentPage = widget.initialIndex;
 
   @override
   void initState() {
     super.initState();
+    _currentPage = widget.initialIndex;
     _controller = PageController(initialPage: widget.initialIndex);
     WidgetsBinding.instance.addPostFrameCallback((_) {
       _prefetchAround(widget.initialIndex);
@@ -986,10 +1131,10 @@ class _MobilePostPagerState extends State<_MobilePostPager> {
   @override
   void didUpdateWidget(covariant _MobilePostPager oldWidget) {
     super.didUpdateWidget(oldWidget);
-    // Исправленная проверка: сравниваем старый и новый initialIndex, а не текущий свайп
     if (oldWidget.initialIndex != widget.initialIndex &&
         widget.initialIndex >= 0 &&
         widget.initialIndex < widget.posts.length) {
+      _currentPage = widget.initialIndex;
       if (_controller.hasClients) {
         _controller.jumpToPage(widget.initialIndex);
       }
@@ -1007,7 +1152,7 @@ class _MobilePostPagerState extends State<_MobilePostPager> {
 
   @override
   Widget build(BuildContext context) {
-    return ScrollConfiguration(
+    final pager = ScrollConfiguration(
       behavior: ScrollConfiguration.of(context).copyWith(
         dragDevices: {
           PointerDeviceKind.touch,
@@ -1023,6 +1168,7 @@ class _MobilePostPagerState extends State<_MobilePostPager> {
             : const PageScrollPhysics(),
         itemCount: widget.posts.length,
         onPageChanged: (index) {
+          setState(() => _currentPage = index);
           _prefetchAround(index);
         },
         itemBuilder: (context, index) {
@@ -1055,7 +1201,64 @@ class _MobilePostPagerState extends State<_MobilePostPager> {
       },
     ),
   );
-}
+
+    if (widget.posts.length <= 1) return pager;
+
+    final isComic = widget.posts.first.hasPools;
+    return Stack(
+      children: [
+        pager,
+        Positioned(
+          top: MediaQuery.paddingOf(context).top + 10,
+          left: 0,
+          right: 0,
+          child: Center(
+            child: IgnorePointer(
+              child: ClipRRect(
+                borderRadius: BorderRadius.circular(20),
+                child: BackdropFilter(
+                  filter: ImageFilter.blur(sigmaX: 12, sigmaY: 12),
+                  child: Container(
+                    padding:
+                        const EdgeInsets.symmetric(horizontal: 14, vertical: 6),
+                    decoration: BoxDecoration(
+                      color: Colors.black.withValues(alpha: 0.60),
+                      borderRadius: BorderRadius.circular(20),
+                      border: Border.all(
+                        color: Colors.white.withValues(alpha: 0.18),
+                        width: 1,
+                      ),
+                    ),
+                    child: Row(
+                      mainAxisSize: MainAxisSize.min,
+                      children: [
+                        if (isComic) ...[
+                          const Icon(Icons.auto_stories_rounded,
+                              size: 14, color: Colors.white),
+                          const SizedBox(width: 6),
+                        ],
+                        Text(
+                          isComic
+                              ? 'Комикс • Стр. ${_currentPage + 1} из ${widget.posts.length}'
+                              : '${_currentPage + 1} / ${widget.posts.length}',
+                          style: const TextStyle(
+                            color: Colors.white,
+                            fontSize: 12,
+                            fontWeight: FontWeight.bold,
+                            letterSpacing: -0.2,
+                          ),
+                        ),
+                      ],
+                    ),
+                  ),
+                ),
+              ),
+            ),
+          ),
+        ),
+      ],
+    );
+  }
 
   void _setMediaGestureLocked(bool locked) {
     if (_mediaGestureLocked == locked) return;
@@ -1340,12 +1543,14 @@ class _PostInfoCard extends StatefulWidget {
     required this.strings,
     this.localMedia,
     this.fileSizeBytes,
+    this.e621Provider,
   });
 
   final Post post;
   final AppStrings strings;
   final DownloadedMedia? localMedia;
   final int? fileSizeBytes;
+  final E621Provider? e621Provider;
 
   @override
   State<_PostInfoCard> createState() => _PostInfoCardState();
@@ -1356,6 +1561,8 @@ class _PostInfoCardState extends State<_PostInfoCard> {
   int? _resolvedWidth;
   int? _resolvedHeight;
   bool _resolvingDimensions = false;
+  int? _votedScore;
+  bool _isVoting = false;
 
   static final _dimensionCache = <String, (int, int)>{};
 
@@ -1364,6 +1571,43 @@ class _PostInfoCardState extends State<_PostInfoCard> {
     return imageTypes.contains(fileType.toLowerCase());
   }
 
+  Future<void> _handleVote(int score) async {
+    final provider = widget.e621Provider;
+    if (provider == null) return;
+    if (!provider.isAuthorized) {
+      ScaffoldMessenger.maybeOf(context)?.showSnackBar(
+        const SnackBar(
+          content: Text('Для голосования на e621 настройте API-ключ в Источниках'),
+          duration: Duration(seconds: 3),
+        ),
+      );
+      return;
+    }
+    if (_isVoting) return;
+    setState(() => _isVoting = true);
+    final success = await provider.votePost(widget.post.id, score);
+    if (mounted) {
+      setState(() {
+        _isVoting = false;
+        if (success) {
+          _votedScore = (_votedScore == score) ? 0 : score;
+        }
+      });
+      ScaffoldMessenger.maybeOf(context)?.showSnackBar(
+        SnackBar(
+          content: Text(
+            success
+                ? (score > 0
+                    ? 'Голос ЗА (+1) отправлен на e621!'
+                    : 'Голос ПРОТИВ (-1) отправлен на e621!')
+                : 'Не удалось отправить голос',
+          ),
+          duration: const Duration(seconds: 2),
+        ),
+      );
+    }
+  }
+
   @override
   void initState() {
     super.initState();
@@ -1591,11 +1835,59 @@ class _PostInfoCardState extends State<_PostInfoCard> {
                   label: post.fileType.toUpperCase(),
                 ),
               RatingBadge(rating: post.rating),
-              if (post.score != 0)
+              if (post.score != 0 || widget.e621Provider != null)
+                Row(
+                  mainAxisSize: MainAxisSize.min,
+                  children: [
+                    _SpecBadge(
+                      icon: Icons.star_rounded,
+                      label: '${post.score + (_votedScore ?? 0)}',
+                      iconColor: Colors.amber,
+                    ),
+                    if (widget.e621Provider != null) ...[
+                      const SizedBox(width: 4),
+                      IconButton(
+                        visualDensity: VisualDensity.compact,
+                        padding: EdgeInsets.zero,
+                        constraints:
+                            const BoxConstraints(minWidth: 28, minHeight: 28),
+                        icon: Icon(
+                          _votedScore == 1
+                              ? Icons.thumb_up_rounded
+                              : Icons.thumb_up_alt_outlined,
+                          size: 15,
+                          color: _votedScore == 1
+                              ? const Color(0xFF10B981)
+                              : scheme.onSurfaceVariant,
+                        ),
+                        onPressed: _isVoting ? null : () => _handleVote(1),
+                        tooltip: 'Голос ЗА (+1)',
+                      ),
+                      IconButton(
+                        visualDensity: VisualDensity.compact,
+                        padding: EdgeInsets.zero,
+                        constraints:
+                            const BoxConstraints(minWidth: 28, minHeight: 28),
+                        icon: Icon(
+                          _votedScore == -1
+                              ? Icons.thumb_down_rounded
+                              : Icons.thumb_down_alt_outlined,
+                          size: 15,
+                          color: _votedScore == -1
+                              ? const Color(0xFFEF4444)
+                              : scheme.onSurfaceVariant,
+                        ),
+                        onPressed: _isVoting ? null : () => _handleVote(-1),
+                        tooltip: 'Голос ПРОТИВ (-1)',
+                      ),
+                    ],
+                  ],
+                ),
+              if (post.favCount != null && post.favCount! > 0)
                 _SpecBadge(
-                  icon: Icons.star_rounded,
-                  label: '${post.score}',
-                  iconColor: Colors.amber,
+                  icon: Icons.favorite_rounded,
+                  label: '${post.favCount}',
+                  iconColor: const Color(0xFFEF4444),
                 ),
               if (post.source != null && post.source!.isNotEmpty)
                 InkWell(

lib/features/post/presentation/widgets/e621_pool_sheet.dart

@@ -0,0 +1,501 @@
+import 'dart:ui';
+
+import 'package:flutter/material.dart';
+import 'package:flutter/services.dart';
+
+import '../../../../backend/models/e621_pool.dart';
+import '../../../../backend/models/post.dart';
+import '../../../../backend/providers/e621_provider.dart';
+
+class E621PoolSheet extends StatefulWidget {
+  const E621PoolSheet({
+    required this.currentPost,
+    required this.poolId,
+    required this.provider,
+    required this.onSelectPostId,
+    super.key,
+  });
+
+  final Post currentPost;
+  final String poolId;
+  final E621Provider provider;
+  final ValueChanged<String> onSelectPostId;
+
+  static Future<void> show(
+    BuildContext context, {
+    required Post currentPost,
+    required String poolId,
+    required E621Provider provider,
+    required ValueChanged<String> onSelectPostId,
+  }) {
+    return showModalBottomSheet(
+      context: context,
+      backgroundColor: Colors.transparent,
+      isScrollControlled: true,
+      builder: (context) => E621PoolSheet(
+        currentPost: currentPost,
+        poolId: poolId,
+        provider: provider,
+        onSelectPostId: onSelectPostId,
+      ),
+    );
+  }
+
+  @override
+  State<E621PoolSheet> createState() => _E621PoolSheetState();
+}
+
+class _E621PoolSheetState extends State<E621PoolSheet> {
+  E621Pool? _pool;
+  bool _isLoading = true;
+  String? _error;
+
+  @override
+  void initState() {
+    super.initState();
+    _loadPool();
+  }
+
+  Future<void> _loadPool() async {
+    setState(() {
+      _isLoading = true;
+      _error = null;
+    });
+    try {
+      final pool = await widget.provider.getPool(widget.poolId);
+      if (mounted) {
+        setState(() {
+          _pool = pool;
+          _isLoading = false;
+          if (pool == null) {
+            _error = 'Не удалось загрузить информацию о серии';
+          }
+        });
+      }
+    } catch (e) {
+      if (mounted) {
+        setState(() {
+          _error = 'Ошибка: $e';
+          _isLoading = false;
+        });
+      }
+    }
+  }
+
+  @override
+  Widget build(BuildContext context) {
+    final theme = Theme.of(context);
+    final isDark = theme.brightness == Brightness.dark;
+    final isRu = Localizations.maybeLocaleOf(context)?.languageCode == 'ru';
+    final pool = _pool;
+
+    final currentPage = pool?.pageOf(widget.currentPost.id) ?? 0;
+    final prevId = pool?.previousPostId(widget.currentPost.id);
+    final nextId = pool?.nextPostId(widget.currentPost.id);
+
+    return DraggableScrollableSheet(
+      initialChildSize: 0.55,
+      minChildSize: 0.35,
+      maxChildSize: 0.88,
+      builder: (context, scrollController) {
+        return ClipRRect(
+          borderRadius: const BorderRadius.vertical(top: Radius.circular(28)),
+          child: BackdropFilter(
+            filter: ImageFilter.blur(sigmaX: 20, sigmaY: 20),
+            child: Container(
+              decoration: BoxDecoration(
+                color: isDark
+                    ? const Color(0xFF161B22).withValues(alpha: 0.92)
+                    : Colors.white.withValues(alpha: 0.94),
+                borderRadius:
+                    const BorderRadius.vertical(top: Radius.circular(28)),
+                border: Border.all(
+                  color: isDark
+                      ? Colors.white.withValues(alpha: 0.12)
+                      : Colors.black.withValues(alpha: 0.08),
+                  width: 1.1,
+                ),
+                boxShadow: [
+                  BoxShadow(
+                    color: Colors.black.withValues(alpha: 0.35),
+                    blurRadius: 28,
+                    offset: const Offset(0, -6),
+                  ),
+                ],
+              ),
+              child: ListView(
+                controller: scrollController,
+                padding: const EdgeInsets.fromLTRB(20, 12, 20, 32),
+                children: [
+                  // Drag handle
+                  Center(
+                    child: Container(
+                      width: 44,
+                      height: 5,
+                      decoration: BoxDecoration(
+                        color: isDark
+                            ? Colors.white.withValues(alpha: 0.25)
+                            : Colors.black.withValues(alpha: 0.20),
+                        borderRadius: BorderRadius.circular(3),
+                      ),
+                    ),
+                  ),
+                  const SizedBox(height: 16),
+
+                  if (_isLoading)
+                    const Center(
+                      child: Padding(
+                        padding: EdgeInsets.all(40),
+                        child: CircularProgressIndicator(),
+                      ),
+                    )
+                  else if (_error != null)
+                    Center(
+                      child: Padding(
+                        padding: const EdgeInsets.all(32),
+                        child: Column(
+                          children: [
+                            const Icon(Icons.error_outline_rounded,
+                                size: 40, color: Color(0xFFEF4444)),
+                            const SizedBox(height: 12),
+                            Text(_error!),
+                            const SizedBox(height: 12),
+                            FilledButton.tonal(
+                              onPressed: _loadPool,
+                              child: const Text('Повторить'),
+                            ),
+                          ],
+                        ),
+                      ),
+                    )
+                  else if (pool != null) ...[
+                    // Pool header
+                    Row(
+                      crossAxisAlignment: CrossAxisAlignment.start,
+                      children: [
+                        Container(
+                          width: 48,
+                          height: 48,
+                          decoration: BoxDecoration(
+                            gradient: const LinearGradient(
+                              colors: [Color(0xFF0055AA), Color(0xFF0088FF)],
+                              begin: Alignment.topLeft,
+                              end: Alignment.bottomRight,
+                            ),
+                            borderRadius: BorderRadius.circular(16),
+                            boxShadow: [
+                              BoxShadow(
+                                color: const Color(0xFF0055AA)
+                                    .withValues(alpha: 0.35),
+                                blurRadius: 10,
+                                offset: const Offset(0, 4),
+                              ),
+                            ],
+                          ),
+                          child: const Icon(
+                            Icons.menu_book_rounded,
+                            color: Colors.white,
+                            size: 24,
+                          ),
+                        ),
+                        const SizedBox(width: 14),
+                        Expanded(
+                          child: Column(
+                            crossAxisAlignment: CrossAxisAlignment.start,
+                            children: [
+                              Text(
+                                pool.cleanTitle,
+                                style: theme.textTheme.titleMedium?.copyWith(
+                                  fontWeight: FontWeight.bold,
+                                  letterSpacing: -0.2,
+                                ),
+                              ),
+                              const SizedBox(height: 4),
+                              Wrap(
+                                spacing: 6,
+                                runSpacing: 4,
+                                children: [
+                                  Container(
+                                    padding: const EdgeInsets.symmetric(
+                                        horizontal: 8, vertical: 3),
+                                    decoration: BoxDecoration(
+                                      color: const Color(0xFF0055AA)
+                                          .withValues(alpha: 0.15),
+                                      borderRadius: BorderRadius.circular(8),
+                                      border: Border.all(
+                                        color: const Color(0xFF0055AA)
+                                            .withValues(alpha: 0.30),
+                                        width: 0.8,
+                                      ),
+                                    ),
+                                    child: Text(
+                                      pool.category == 'series'
+                                          ? (isRu ? 'Комикс / Серия' : 'Series')
+                                          : (isRu
+                                              ? 'Коллекция'
+                                              : 'Collection'),
+                                      style: const TextStyle(
+                                        fontSize: 11,
+                                        fontWeight: FontWeight.w600,
+                                        color: Color(0xFF0077EE),
+                                      ),
+                                    ),
+                                  ),
+                                  Container(
+                                    padding: const EdgeInsets.symmetric(
+                                        horizontal: 8, vertical: 3),
+                                    decoration: BoxDecoration(
+                                      color: isDark
+                                          ? Colors.white.withValues(alpha: 0.08)
+                                          : Colors.black.withValues(alpha: 0.05),
+                                      borderRadius: BorderRadius.circular(8),
+                                    ),
+                                    child: Text(
+                                      '${pool.postCount} ${isRu ? 'страниц' : 'pages'}',
+                                      style: TextStyle(
+                                        fontSize: 11,
+                                        fontWeight: FontWeight.w500,
+                                        color: theme
+                                            .colorScheme.onSurfaceVariant,
+                                      ),
+                                    ),
+                                  ),
+                                ],
+                              ),
+                            ],
+                          ),
+                        ),
+                      ],
+                    ),
+
+                    if (pool.description.trim().isNotEmpty) ...[
+                      const SizedBox(height: 12),
+                      Text(
+                        pool.description.trim(),
+                        style: theme.textTheme.bodySmall?.copyWith(
+                          color: theme.colorScheme.onSurfaceVariant,
+                        ),
+                        maxLines: 4,
+                        overflow: TextOverflow.ellipsis,
+                      ),
+                    ],
+
+                    const SizedBox(height: 16),
+
+                    // Big "Read Full Comic" Button
+                    FilledButton.icon(
+                      onPressed: () {
+                        HapticFeedback.mediumImpact();
+                        Navigator.of(context).pop();
+                        final startId = pool.postIds.contains(widget.currentPost.id)
+                            ? widget.currentPost.id
+                            : pool.postIds.first;
+                        widget.onSelectPostId(startId);
+                      },
+                      icon: const Icon(Icons.auto_stories_rounded, size: 18),
+                      label: Text(
+                        isRu
+                            ? 'Читать весь комикс (${pool.postCount} стр.)'
+                            : 'Read Full Comic (${pool.postCount} pages)',
+                        style: const TextStyle(fontWeight: FontWeight.bold),
+                      ),
+                      style: FilledButton.styleFrom(
+                        backgroundColor: const Color(0xFF0055AA),
+                        foregroundColor: Colors.white,
+                        minimumSize: const Size(double.infinity, 46),
+                        shape: RoundedRectangleBorder(
+                          borderRadius: BorderRadius.circular(14),
+                        ),
+                      ),
+                    ),
+
+                    const SizedBox(height: 16),
+
+                    // Quick Page Navigator Banner
+                    Container(
+                      padding: const EdgeInsets.all(12),
+                      decoration: BoxDecoration(
+                        color: isDark
+                            ? Colors.black.withValues(alpha: 0.25)
+                            : theme.colorScheme.surfaceContainerHighest
+                                .withValues(alpha: 0.5),
+                        borderRadius: BorderRadius.circular(16),
+                        border: Border.all(
+                          color: isDark
+                              ? Colors.white.withValues(alpha: 0.08)
+                              : Colors.black.withValues(alpha: 0.06),
+                        ),
+                      ),
+                      child: Row(
+                        children: [
+                          IconButton.filledTonal(
+                            tooltip: isRu ? 'Предыдущая' : 'Previous',
+                            onPressed: prevId == null
+                                ? null
+                                : () {
+                                    HapticFeedback.lightImpact();
+                                    Navigator.of(context).pop();
+                                    widget.onSelectPostId(prevId);
+                                  },
+                            icon: const Icon(Icons.arrow_back_rounded, size: 18),
+                          ),
+                          Expanded(
+                            child: Column(
+                              children: [
+                                Text(
+                                  currentPage > 0
+                                      ? (isRu
+                                          ? 'Страница $currentPage из ${pool.postCount}'
+                                          : 'Page $currentPage of ${pool.postCount}')
+                                      : (isRu
+                                          ? 'Страниц в пуле: ${pool.postCount}'
+                                          : '${pool.postCount} pages in pool'),
+                                  style: const TextStyle(
+                                    fontWeight: FontWeight.bold,
+                                    fontSize: 13,
+                                  ),
+                                ),
+                                if (currentPage > 0)
+                                  Padding(
+                                    padding: const EdgeInsets.only(top: 6),
+                                    child: LinearProgressIndicator(
+                                      value: (currentPage / pool.postCount)
+                                          .clamp(0.0, 1.0),
+                                      borderRadius: BorderRadius.circular(4),
+                                      minHeight: 4,
+                                      backgroundColor: isDark
+                                          ? Colors.white.withValues(alpha: 0.1)
+                                          : Colors.black.withValues(alpha: 0.08),
+                                    ),
+                                  ),
+                              ],
+                            ),
+                          ),
+                          IconButton.filledTonal(
+                            tooltip: isRu ? 'Следующая' : 'Next',
+                            onPressed: nextId == null
+                                ? null
+                                : () {
+                                    HapticFeedback.lightImpact();
+                                    Navigator.of(context).pop();
+                                    widget.onSelectPostId(nextId);
+                                  },
+                            icon: const Icon(Icons.arrow_forward_rounded,
+                                size: 18),
+                          ),
+                        ],
+                      ),
+                    ),
+
+                    const SizedBox(height: 18),
+
+                    Text(
+                      isRu ? 'Все страницы серии:' : 'All pages in pool:',
+                      style: theme.textTheme.bodyMedium?.copyWith(
+                        fontWeight: FontWeight.w700,
+                      ),
+                    ),
+                    const SizedBox(height: 10),
+
+                    // Grid of page buttons
+                    Wrap(
+                      spacing: 8,
+                      runSpacing: 8,
+                      children: [
+                        for (int i = 0; i < pool.postIds.length; i++) ...[
+                          _PageButton(
+                            pageNumber: i + 1,
+                            postId: pool.postIds[i],
+                            isCurrent: pool.postIds[i] == widget.currentPost.id,
+                            onTap: () {
+                              if (pool.postIds[i] == widget.currentPost.id) {
+                                return;
+                              }
+                              HapticFeedback.lightImpact();
+                              Navigator.of(context).pop();
+                              widget.onSelectPostId(pool.postIds[i]);
+                            },
+                          ),
+                        ],
+                      ],
+                    ),
+                  ],
+                ],
+              ),
+            ),
+          ),
+        );
+      },
+    );
+  }
+}
+
+class _PageButton extends StatelessWidget {
+  const _PageButton({
+    required this.pageNumber,
+    required this.postId,
+    required this.isCurrent,
+    required this.onTap,
+  });
+
+  final int pageNumber;
+  final String postId;
+  final bool isCurrent;
+  final VoidCallback onTap;
+
+  @override
+  Widget build(BuildContext context) {
+    final theme = Theme.of(context);
+    final isDark = theme.brightness == Brightness.dark;
+
+    return Material(
+      color: Colors.transparent,
+      child: InkWell(
+        onTap: onTap,
+        borderRadius: BorderRadius.circular(12),
+        child: AnimatedContainer(
+          duration: const Duration(milliseconds: 200),
+          constraints: const BoxConstraints(minWidth: 42, minHeight: 40),
+          padding: const EdgeInsets.symmetric(horizontal: 10, vertical: 8),
+          decoration: BoxDecoration(
+            color: isCurrent
+                ? const Color(0xFF0055AA)
+                : (isDark
+                    ? Colors.white.withValues(alpha: 0.08)
+                    : Colors.black.withValues(alpha: 0.05)),
+            borderRadius: BorderRadius.circular(12),
+            border: Border.all(
+              color: isCurrent
+                  ? const Color(0xFF0077EE)
+                  : (isDark
+                      ? Colors.white.withValues(alpha: 0.12)
+                      : Colors.black.withValues(alpha: 0.08)),
+              width: isCurrent ? 1.4 : 0.8,
+            ),
+            boxShadow: isCurrent
+                ? [
+                    BoxShadow(
+                      color: const Color(0xFF0055AA).withValues(alpha: 0.40),
+                      blurRadius: 8,
+                      offset: const Offset(0, 2),
+                    ),
+                  ]
+                : null,
+          ),
+          child: Center(
+            child: Text(
+              '$pageNumber',
+              style: TextStyle(
+                fontSize: 13,
+                fontWeight: isCurrent ? FontWeight.bold : FontWeight.w600,
+                color: isCurrent
+                    ? Colors.white
+                    : theme.colorScheme.onSurface,
+              ),
+            ),
+          ),
+        ),
+      ),
+    );
+  }
+}

lib/features/post/presentation/widgets/post_media_viewer.dart

@@ -230,9 +230,6 @@ class _PostMediaViewerState extends State<PostMediaViewer>
               aspectRatio: widget.post.width > 0 && widget.post.height > 0
                   ? widget.post.width / widget.post.height
                   : 16 / 9,
-              previewUrl: widget.post.previewUrl.isNotEmpty
-                  ? widget.post.previewUrl
-                  : widget.post.sampleUrl,
               isSoftwareDecoding: _useSoftwareDecoding,
               onToggleDecoder: _toggleDecoderMode,
               controlsVisible: _controlsVisible,
@@ -720,9 +717,6 @@ class _PostMediaViewerState extends State<PostMediaViewer>
           halfVolume: _halfVolume,
           coverVideo: _coverVideo,
           initialVolume: _currentVolume,
-          previewUrl: widget.post.previewUrl.isNotEmpty
-              ? widget.post.previewUrl
-              : widget.post.sampleUrl,
           isSoftwareDecoding: _useSoftwareDecoding,
           onToggleDecoder: _toggleDecoderMode,
           errorMessage: _videoError,
@@ -921,7 +915,6 @@ class _FullscreenVideoPage extends StatefulWidget {
     required this.halfVolume,
     required this.coverVideo,
     this.initialVolume = 100.0,
-    this.previewUrl,
     required this.isSoftwareDecoding,
     required this.onToggleDecoder,
     required this.errorMessage,
@@ -938,7 +931,6 @@ class _FullscreenVideoPage extends StatefulWidget {
   final bool halfVolume;
   final bool coverVideo;
   final double initialVolume;
-  final String? previewUrl;
   final bool isSoftwareDecoding;
   final VoidCallback onToggleDecoder;
   final String? errorMessage;
@@ -1065,7 +1057,6 @@ class _FullscreenVideoPageState extends State<_FullscreenVideoPage> {
                 player: widget.player,
                 controller: widget.controller,
                 aspectRatio: widget.aspectRatio,
-                previewUrl: widget.previewUrl,
                 isSoftwareDecoding: widget.isSoftwareDecoding,
                 onToggleDecoder: widget.onToggleDecoder,
                 controlsVisible: _controlsVisible,
@@ -1619,7 +1610,6 @@ class _VideoSurface extends StatefulWidget {
     required this.player,
     required this.controller,
     required this.aspectRatio,
-    this.previewUrl,
     required this.isSoftwareDecoding,
     required this.onToggleDecoder,
     required this.controlsVisible,
@@ -1646,7 +1636,6 @@ class _VideoSurface extends StatefulWidget {
   final Player player;
   final VideoController controller;
   final double aspectRatio;
-  final String? previewUrl;
   final bool isSoftwareDecoding;
   final VoidCallback onToggleDecoder;
   final bool controlsVisible;
@@ -1807,22 +1796,15 @@ class _VideoSurfaceState extends State<_VideoSurface> {
         return Stack(
           fit: StackFit.expand,
           children: [
-            if (widget.previewUrl != null && widget.previewUrl!.isNotEmpty)
-              Positioned.fill(
-                child: CachedNetworkImage(
-                  imageUrl: widget.previewUrl!,
-                  fit: widget.coverVideo ? BoxFit.cover : BoxFit.contain,
-                  memCacheWidth: 1920,
-                  memCacheHeight: 1080,
-                ),
+            ColoredBox(
+              color: Colors.black,
+              child: Video(
+                controller: widget.controller,
+                fit: widget.coverVideo ? BoxFit.cover : BoxFit.contain,
+                controls: null,
+                pauseUponEnteringBackgroundMode: false,
+                resumeUponEnteringForegroundMode: false,
               ),
-            Video(
-              controller: widget.controller,
-              fit: widget.coverVideo ? BoxFit.cover : BoxFit.contain,
-              fill: Colors.transparent,
-              controls: null,
-              pauseUponEnteringBackgroundMode: false,
-              resumeUponEnteringForegroundMode: false,
             ),
             if (_currentBrightness < 0.99)
               Positioned.fill(

lib/features/post/presentation/widgets/post_pools_card.dart

@@ -0,0 +1,173 @@
+import 'package:flutter/material.dart';
+import 'package:flutter/services.dart';
+
+import '../../../../backend/models/post.dart';
+import '../../../../backend/providers/e621_provider.dart';
+import 'e621_pool_sheet.dart';
+
+class PostPoolsCard extends StatelessWidget {
+  const PostPoolsCard({
+    required this.post,
+    required this.provider,
+    required this.onOpenComic,
+    required this.onOpenPostId,
+    super.key,
+  });
+
+  final Post post;
+  final E621Provider provider;
+  final void Function(String poolId, Post currentPost, [String? targetId])
+      onOpenComic;
+  final ValueChanged<String> onOpenPostId;
+
+  @override
+  Widget build(BuildContext context) {
+    if (!post.hasPools) return const SizedBox.shrink();
+
+    final theme = Theme.of(context);
+    final isDark = theme.brightness == Brightness.dark;
+    final isRu = Localizations.maybeLocaleOf(context)?.languageCode == 'ru';
+    final pools = post.poolIds;
+
+    return Container(
+      margin: const EdgeInsets.only(bottom: 16),
+      decoration: BoxDecoration(
+        color: isDark
+            ? theme.colorScheme.surfaceContainerHigh.withValues(alpha: 0.70)
+            : theme.colorScheme.surfaceContainerLow,
+        borderRadius: BorderRadius.circular(20),
+        border: Border.all(
+          color: isDark
+              ? Colors.white.withValues(alpha: 0.12)
+              : theme.colorScheme.outlineVariant.withValues(alpha: 0.40),
+          width: 1.1,
+        ),
+      ),
+      padding: const EdgeInsets.all(16),
+      child: Column(
+        crossAxisAlignment: CrossAxisAlignment.start,
+        children: [
+          Row(
+            children: [
+              const Icon(
+                Icons.menu_book_rounded,
+                size: 20,
+                color: Color(0xFF0077EE),
+              ),
+              const SizedBox(width: 8),
+              Text(
+                isRu ? 'Входит в комикс / серию' : 'Part of Series / Pool',
+                style: theme.textTheme.titleMedium?.copyWith(
+                  fontWeight: FontWeight.bold,
+                ),
+              ),
+              const Spacer(),
+              Container(
+                padding: const EdgeInsets.symmetric(horizontal: 8, vertical: 2),
+                decoration: BoxDecoration(
+                  color: const Color(0xFF0055AA).withValues(alpha: 0.12),
+                  borderRadius: BorderRadius.circular(8),
+                ),
+                child: Text(
+                  '${pools.length}',
+                  style: const TextStyle(
+                    fontSize: 11,
+                    fontWeight: FontWeight.bold,
+                    color: Color(0xFF0077EE),
+                  ),
+                ),
+              ),
+            ],
+          ),
+          const SizedBox(height: 12),
+
+          Wrap(
+            spacing: 8,
+            runSpacing: 8,
+            children: [
+              for (final poolId in pools)
+                Row(
+                  mainAxisSize: MainAxisSize.min,
+                  children: [
+                    Material(
+                      color: Colors.transparent,
+                      child: InkWell(
+                        onTap: () {
+                          HapticFeedback.lightImpact();
+                          onOpenComic(poolId, post);
+                        },
+                        borderRadius: BorderRadius.circular(12),
+                        child: Container(
+                          padding: const EdgeInsets.symmetric(
+                              horizontal: 14, vertical: 9),
+                          decoration: BoxDecoration(
+                            gradient: const LinearGradient(
+                              colors: [Color(0xFF0055AA), Color(0xFF0077EE)],
+                              begin: Alignment.topLeft,
+                              end: Alignment.bottomRight,
+                            ),
+                            borderRadius: BorderRadius.circular(12),
+                            boxShadow: [
+                              BoxShadow(
+                                color: const Color(0xFF0055AA)
+                                    .withValues(alpha: 0.25),
+                                blurRadius: 8,
+                                offset: const Offset(0, 3),
+                              ),
+                            ],
+                          ),
+                          child: Row(
+                            mainAxisSize: MainAxisSize.min,
+                            children: [
+                              const Icon(Icons.auto_stories_rounded,
+                                  size: 16, color: Colors.white),
+                              const SizedBox(width: 7),
+                              Text(
+                                isRu
+                                    ? 'Читать весь комикс (#$poolId)'
+                                    : 'Read Full Comic (#$poolId)',
+                                style: const TextStyle(
+                                  fontSize: 12,
+                                  fontWeight: FontWeight.bold,
+                                  color: Colors.white,
+                                ),
+                              ),
+                              const SizedBox(width: 5),
+                              const Icon(Icons.arrow_forward_rounded,
+                                  size: 13, color: Colors.white),
+                            ],
+                          ),
+                        ),
+                      ),
+                    ),
+                    const SizedBox(width: 4),
+                    IconButton.filledTonal(
+                      tooltip: isRu ? 'Все страницы' : 'All pages',
+                      style: IconButton.styleFrom(
+                        visualDensity: VisualDensity.compact,
+                        shape: RoundedRectangleBorder(
+                          borderRadius: BorderRadius.circular(10),
+                        ),
+                      ),
+                      onPressed: () {
+                        HapticFeedback.lightImpact();
+                        E621PoolSheet.show(
+                          context,
+                          currentPost: post,
+                          poolId: poolId,
+                          provider: provider,
+                          onSelectPostId: (targetId) =>
+                              onOpenComic(poolId, post, targetId),
+                        );
+                      },
+                      icon: const Icon(Icons.grid_view_rounded, size: 16),
+                    ),
+                  ],
+                ),
+            ],
+          ),
+        ],
+      ),
+    );
+  }
+}

lib/features/post/presentation/widgets/post_relations_card.dart

@@ -0,0 +1,164 @@
+import 'package:flutter/material.dart';
+import 'package:flutter/services.dart';
+
+import '../../../../backend/models/post.dart';
+
+class PostRelationsCard extends StatelessWidget {
+  const PostRelationsCard({
+    required this.post,
+    required this.onOpenPostId,
+    super.key,
+  });
+
+  final Post post;
+  final ValueChanged<String> onOpenPostId;
+
+  @override
+  Widget build(BuildContext context) {
+    if (!post.hasRelations) return const SizedBox.shrink();
+
+    final theme = Theme.of(context);
+    final isDark = theme.brightness == Brightness.dark;
+    final isRu = Localizations.maybeLocaleOf(context)?.languageCode == 'ru';
+
+    final parentId = post.parentId;
+    final children = post.childrenIds;
+
+    return Container(
+      margin: const EdgeInsets.only(bottom: 16),
+      decoration: BoxDecoration(
+        color: isDark
+            ? theme.colorScheme.surfaceContainerHigh.withValues(alpha: 0.70)
+            : theme.colorScheme.surfaceContainerLow,
+        borderRadius: BorderRadius.circular(20),
+        border: Border.all(
+          color: isDark
+              ? Colors.white.withValues(alpha: 0.12)
+              : theme.colorScheme.outlineVariant.withValues(alpha: 0.40),
+          width: 1.1,
+        ),
+      ),
+      padding: const EdgeInsets.all(16),
+      child: Column(
+        crossAxisAlignment: CrossAxisAlignment.start,
+        children: [
+          Row(
+            children: [
+              Icon(
+                Icons.copy_all_rounded,
+                size: 20,
+                color: theme.colorScheme.primary,
+              ),
+              const SizedBox(width: 8),
+              Text(
+                isRu ? 'Связанные посты и версии' : 'Variations & Relations',
+                style: theme.textTheme.titleMedium?.copyWith(
+                  fontWeight: FontWeight.bold,
+                ),
+              ),
+              const Spacer(),
+              Container(
+                padding: const EdgeInsets.symmetric(horizontal: 8, vertical: 2),
+                decoration: BoxDecoration(
+                  color: theme.colorScheme.primary.withValues(alpha: 0.12),
+                  borderRadius: BorderRadius.circular(8),
+                ),
+                child: Text(
+                  '${(parentId != null ? 1 : 0) + children.length}',
+                  style: TextStyle(
+                    fontSize: 11,
+                    fontWeight: FontWeight.bold,
+                    color: theme.colorScheme.primary,
+                  ),
+                ),
+              ),
+            ],
+          ),
+          const SizedBox(height: 12),
+
+          Wrap(
+            spacing: 8,
+            runSpacing: 8,
+            children: [
+              if (parentId != null)
+                _RelationPill(
+                  icon: Icons.north_west_rounded,
+                  label: isRu ? 'Родительский арт #$parentId' : 'Parent #$parentId',
+                  color: const Color(0xFF0077EE),
+                  onTap: () {
+                    HapticFeedback.lightImpact();
+                    onOpenPostId(parentId);
+                  },
+                ),
+              for (final childId in children)
+                _RelationPill(
+                  icon: Icons.style_rounded,
+                  label: isRu ? 'Версия #$childId' : 'Variant #$childId',
+                  color: const Color(0xFF10B981),
+                  onTap: () {
+                    HapticFeedback.lightImpact();
+                    onOpenPostId(childId);
+                  },
+                ),
+            ],
+          ),
+        ],
+      ),
+    );
+  }
+}
+
+class _RelationPill extends StatelessWidget {
+  const _RelationPill({
+    required this.icon,
+    required this.label,
+    required this.color,
+    required this.onTap,
+  });
+
+  final IconData icon;
+  final String label;
+  final Color color;
+  final VoidCallback onTap;
+
+  @override
+  Widget build(BuildContext context) {
+    final isDark = Theme.of(context).brightness == Brightness.dark;
+
+    return Material(
+      color: Colors.transparent,
+      child: InkWell(
+        onTap: onTap,
+        borderRadius: BorderRadius.circular(12),
+        child: Container(
+          padding: const EdgeInsets.symmetric(horizontal: 10, vertical: 7),
+          decoration: BoxDecoration(
+            color: color.withValues(alpha: isDark ? 0.15 : 0.10),
+            borderRadius: BorderRadius.circular(12),
+            border: Border.all(
+              color: color.withValues(alpha: isDark ? 0.35 : 0.25),
+              width: 0.9,
+            ),
+          ),
+          child: Row(
+            mainAxisSize: MainAxisSize.min,
+            children: [
+              Icon(icon, size: 14, color: color),
+              const SizedBox(width: 6),
+              Text(
+                label,
+                style: TextStyle(
+                  fontSize: 12,
+                  fontWeight: FontWeight.w600,
+                  color: color,
+                ),
+              ),
+              const SizedBox(width: 4),
+              Icon(Icons.arrow_forward_ios_rounded, size: 10, color: color),
+            ],
+          ),
+        ),
+      ),
+    );
+  }
+}

lib/features/providers/presentation/providers_screen.dart

@@ -358,6 +358,9 @@ class ProvidersScreen extends ConsumerWidget {
                           '/providers/new',
                           extra: item,
                         ),
+                        onSaveConfig: (updated) => ref
+                            .read(providersControllerProvider.notifier)
+                            .save(updated),
                         onDelete: () async {
                           final ok = await showConfirmDialog(
                             context,

lib/features/providers/presentation/widgets/e621_auth_dialog.dart

@@ -0,0 +1,490 @@
+import 'dart:convert';
+import 'dart:ui';
+
+import 'package:dio/dio.dart';
+import 'package:flutter/material.dart';
+import 'package:url_launcher/url_launcher.dart';
+
+import '../../../../backend/models/content_provider_config.dart';
+
+class E621AuthDialog extends StatefulWidget {
+  const E621AuthDialog({
+    required this.config,
+    required this.onSaved,
+    super.key,
+  });
+
+  final ContentProviderConfig config;
+  final ValueChanged<ContentProviderConfig> onSaved;
+
+  static Future<void> show(
+    BuildContext context, {
+    required ContentProviderConfig config,
+    required ValueChanged<ContentProviderConfig> onSaved,
+  }) {
+    return showDialog(
+      context: context,
+      barrierColor: Colors.black54,
+      builder: (context) => E621AuthDialog(
+        config: config,
+        onSaved: onSaved,
+      ),
+    );
+  }
+
+  @override
+  State<E621AuthDialog> createState() => _E621AuthDialogState();
+}
+
+class _E621AuthDialogState extends State<E621AuthDialog> {
+  late final TextEditingController _loginController;
+  late final TextEditingController _apiKeyController;
+  bool _obscureKey = true;
+  bool _isLoading = false;
+  String? _statusMessage;
+  bool _isSuccess = false;
+
+  @override
+  void initState() {
+    super.initState();
+    final login = widget.config.customHeaders['query.login'] ?? '';
+    final apiKey = widget.config.customHeaders['query.api_key'] ?? '';
+    _loginController = TextEditingController(text: login);
+    _apiKeyController = TextEditingController(text: apiKey);
+  }
+
+  @override
+  void dispose() {
+    _loginController.dispose();
+    _apiKeyController.dispose();
+    super.dispose();
+  }
+
+  Future<void> _testAndSave() async {
+    final login = _loginController.text.trim();
+    final apiKey = _apiKeyController.text.trim();
+
+    if (login.isEmpty || apiKey.isEmpty) {
+      setState(() {
+        _statusMessage = 'Укажите логин и API ключ';
+        _isSuccess = false;
+      });
+      return;
+    }
+
+    setState(() {
+      _isLoading = true;
+      _statusMessage = null;
+    });
+
+    try {
+      final dio = Dio(
+        BaseOptions(
+          baseUrl: widget.config.baseUrl,
+          connectTimeout: const Duration(seconds: 10),
+          receiveTimeout: const Duration(seconds: 10),
+          headers: {
+            'Authorization':
+                'Basic ${base64Encode(utf8.encode('$login:$apiKey'))}',
+            'User-Agent': 'Prisma/3.6.6 (by $login on e621)',
+            'Accept': 'application/json',
+          },
+        ),
+      );
+
+      final response = await dio.get<dynamic>('/posts.json', queryParameters: {
+        'limit': 1,
+      });
+
+      if (response.statusCode == 200) {
+        final updatedHeaders =
+            Map<String, String>.from(widget.config.customHeaders)
+              ..['query.login'] = login
+              ..['query.api_key'] = apiKey;
+
+        final updatedConfig = widget.config.copyWith(
+          customHeaders: updatedHeaders,
+          updatedAt: DateTime.now(),
+        );
+
+        widget.onSaved(updatedConfig);
+
+        setState(() {
+          _isLoading = false;
+          _isSuccess = true;
+          _statusMessage = 'Успешно авторизован! Лимит тегов снят.';
+        });
+
+        await Future<void>.delayed(const Duration(milliseconds: 650));
+        if (mounted) Navigator.of(context).pop();
+      } else {
+        setState(() {
+          _isLoading = false;
+          _isSuccess = false;
+          _statusMessage =
+              'Ошибка проверки (код ${response.statusCode}). Проверьте логин и ключ.';
+        });
+      }
+    } on DioException catch (e) {
+      setState(() {
+        _isLoading = false;
+        _isSuccess = false;
+        if (e.response?.statusCode == 401) {
+          _statusMessage = 'Неверный логин или API-ключ (401 Unauthorized)';
+        } else if (e.response?.statusCode == 403) {
+          _statusMessage = 'Доступ запрещен (403 Forbidden). Проверьте API access в профиле e621.';
+        } else {
+          _statusMessage = 'Ошибка подключения: ${e.message ?? e.toString()}';
+        }
+      });
+    } catch (e) {
+      setState(() {
+        _isLoading = false;
+        _isSuccess = false;
+        _statusMessage = 'Ошибка: $e';
+      });
+    }
+  }
+
+  void _clearAuth() {
+    final updatedHeaders =
+        Map<String, String>.from(widget.config.customHeaders)
+          ..remove('query.login')
+          ..remove('query.api_key');
+
+    final updatedConfig = widget.config.copyWith(
+      customHeaders: updatedHeaders,
+      updatedAt: DateTime.now(),
+    );
+
+    widget.onSaved(updatedConfig);
+    Navigator.of(context).pop();
+  }
+
+  @override
+  Widget build(BuildContext context) {
+    final theme = Theme.of(context);
+    final isDark = theme.brightness == Brightness.dark;
+    final currentLogin = widget.config.customHeaders['query.login'];
+    final isAlreadyAuthorized =
+        currentLogin != null && currentLogin.trim().isNotEmpty;
+
+    return Dialog(
+      backgroundColor: Colors.transparent,
+      insetPadding: const EdgeInsets.symmetric(horizontal: 20, vertical: 24),
+      child: ConstrainedBox(
+        constraints: const BoxConstraints(maxWidth: 480),
+        child: ClipRRect(
+          borderRadius: BorderRadius.circular(28),
+          child: BackdropFilter(
+            filter: ImageFilter.blur(sigmaX: 20, sigmaY: 20),
+            child: Container(
+              padding: const EdgeInsets.all(24),
+              decoration: BoxDecoration(
+                color: isDark
+                    ? const Color(0xFF1E2430).withValues(alpha: 0.90)
+                    : Colors.white.withValues(alpha: 0.94),
+                borderRadius: BorderRadius.circular(28),
+                border: Border.all(
+                  color: isDark
+                      ? const Color(0xFF0055AA).withValues(alpha: 0.40)
+                      : const Color(0xFF0055AA).withValues(alpha: 0.20),
+                  width: 1.2,
+                ),
+                boxShadow: [
+                  BoxShadow(
+                    color: const Color(0xFF0055AA).withValues(alpha: 0.15),
+                    blurRadius: 30,
+                    offset: const Offset(0, 10),
+                  ),
+                ],
+              ),
+              child: Column(
+                mainAxisSize: MainAxisSize.min,
+                crossAxisAlignment: CrossAxisAlignment.stretch,
+                children: [
+                  // Title row
+                  Row(
+                    children: [
+                      Container(
+                        width: 44,
+                        height: 44,
+                        decoration: BoxDecoration(
+                          gradient: const LinearGradient(
+                            colors: [Color(0xFF0055AA), Color(0xFF0077EE)],
+                            begin: Alignment.topLeft,
+                            end: Alignment.bottomRight,
+                          ),
+                          borderRadius: BorderRadius.circular(14),
+                          boxShadow: [
+                            BoxShadow(
+                              color: const Color(0xFF0055AA).withValues(alpha: 0.35),
+                              blurRadius: 10,
+                              offset: const Offset(0, 4),
+                            ),
+                          ],
+                        ),
+                        child: const Icon(
+                          Icons.vpn_key_rounded,
+                          color: Colors.white,
+                          size: 22,
+                        ),
+                      ),
+                      const SizedBox(width: 14),
+                      Expanded(
+                        child: Column(
+                          crossAxisAlignment: CrossAxisAlignment.start,
+                          children: [
+                            Text(
+                              'Авторизация e621',
+                              style: theme.textTheme.titleMedium?.copyWith(
+                                fontWeight: FontWeight.bold,
+                                letterSpacing: -0.2,
+                              ),
+                            ),
+                            Text(
+                              isAlreadyAuthorized
+                                  ? 'Вход выполнен как $currentLogin'
+                                  : 'Снятие ограничений поиска и функций',
+                              style: theme.textTheme.bodySmall?.copyWith(
+                                color: isAlreadyAuthorized
+                                    ? const Color(0xFF10B981)
+                                    : theme.colorScheme.onSurfaceVariant,
+                                fontWeight: isAlreadyAuthorized
+                                    ? FontWeight.w600
+                                    : FontWeight.normal,
+                              ),
+                            ),
+                          ],
+                        ),
+                      ),
+                      IconButton(
+                        icon: const Icon(Icons.close_rounded),
+                        onPressed: () => Navigator.of(context).pop(),
+                        visualDensity: VisualDensity.compact,
+                      ),
+                    ],
+                  ),
+
+                  const SizedBox(height: 18),
+
+                  // Benefits badge
+                  Container(
+                    padding: const EdgeInsets.all(12),
+                    decoration: BoxDecoration(
+                      color: const Color(0xFF0055AA).withValues(alpha: isDark ? 0.15 : 0.08),
+                      borderRadius: BorderRadius.circular(16),
+                      border: Border.all(
+                        color: const Color(0xFF0055AA).withValues(alpha: 0.25),
+                      ),
+                    ),
+                    child: const Column(
+                      crossAxisAlignment: CrossAxisAlignment.start,
+                      children: [
+                        _BenefitRow(
+                          icon: Icons.check_circle_outline_rounded,
+                          text: 'Снятие лимита в 2 тега (поиск по 4–6+ тегам)',
+                        ),
+                        SizedBox(height: 6),
+                        _BenefitRow(
+                          icon: Icons.favorite_border_rounded,
+                          text: 'Серверная синхронизация Избранного (Favorites)',
+                        ),
+                        SizedBox(height: 6),
+                        _BenefitRow(
+                          icon: Icons.thumb_up_alt_outlined,
+                          text: 'Голосование за посты (Upvote / Downvote)',
+                        ),
+                      ],
+                    ),
+                  ),
+
+                  const SizedBox(height: 16),
+
+                  // Username field
+                  TextField(
+                    controller: _loginController,
+                    decoration: InputDecoration(
+                      labelText: 'Имя пользователя (Username на e621)',
+                      prefixIcon: const Icon(Icons.person_outline_rounded),
+                      filled: true,
+                      fillColor: isDark
+                          ? Colors.black.withValues(alpha: 0.25)
+                          : Colors.grey.shade100,
+                      border: OutlineInputBorder(
+                        borderRadius: BorderRadius.circular(16),
+                        borderSide: BorderSide.none,
+                      ),
+                    ),
+                  ),
+
+                  const SizedBox(height: 12),
+
+                  // API Key field
+                  TextField(
+                    controller: _apiKeyController,
+                    obscureText: _obscureKey,
+                    decoration: InputDecoration(
+                      labelText: 'API Ключ (API Key)',
+                      prefixIcon: const Icon(Icons.key_rounded),
+                      suffixIcon: IconButton(
+                        icon: Icon(
+                          _obscureKey
+                              ? Icons.visibility_off_rounded
+                              : Icons.visibility_rounded,
+                        ),
+                        onPressed: () =>
+                            setState(() => _obscureKey = !_obscureKey),
+                      ),
+                      filled: true,
+                      fillColor: isDark
+                          ? Colors.black.withValues(alpha: 0.25)
+                          : Colors.grey.shade100,
+                      border: OutlineInputBorder(
+                        borderRadius: BorderRadius.circular(16),
+                        borderSide: BorderSide.none,
+                      ),
+                    ),
+                  ),
+
+                  const SizedBox(height: 10),
+
+                  // How to get API key link
+                  Align(
+                    alignment: Alignment.centerLeft,
+                    child: TextButton.icon(
+                      onPressed: () {
+                        launchUrl(
+                          Uri.parse('https://e621.net/users/home'),
+                          mode: LaunchMode.externalApplication,
+                        );
+                      },
+                      icon: const Icon(Icons.open_in_new_rounded, size: 14),
+                      label: const Text(
+                        'Как получить ключ (e621 -> Manage API Access)',
+                        style: TextStyle(fontSize: 12),
+                      ),
+                      style: TextButton.styleFrom(
+                        padding: EdgeInsets.zero,
+                        visualDensity: VisualDensity.compact,
+                      ),
+                    ),
+                  ),
+
+                  if (_statusMessage != null) ...[
+                    const SizedBox(height: 8),
+                    Container(
+                      padding: const EdgeInsets.symmetric(
+                          horizontal: 12, vertical: 8),
+                      decoration: BoxDecoration(
+                        color: _isSuccess
+                            ? const Color(0xFF10B981).withValues(alpha: 0.15)
+                            : const Color(0xFFEF4444).withValues(alpha: 0.15),
+                        borderRadius: BorderRadius.circular(12),
+                        border: Border.all(
+                          color: _isSuccess
+                              ? const Color(0xFF10B981).withValues(alpha: 0.40)
+                              : const Color(0xFFEF4444).withValues(alpha: 0.40),
+                        ),
+                      ),
+                      child: Row(
+                        children: [
+                          Icon(
+                            _isSuccess
+                                ? Icons.check_circle_rounded
+                                : Icons.error_outline_rounded,
+                            size: 16,
+                            color: _isSuccess
+                                ? const Color(0xFF10B981)
+                                : const Color(0xFFEF4444),
+                          ),
+                          const SizedBox(width: 8),
+                          Expanded(
+                            child: Text(
+                              _statusMessage!,
+                              style: TextStyle(
+                                fontSize: 12,
+                                color: _isSuccess
+                                    ? const Color(0xFF10B981)
+                                    : const Color(0xFFEF4444),
+                                fontWeight: FontWeight.w600,
+                              ),
+                            ),
+                          ),
+                        ],
+                      ),
+                    ),
+                  ],
+
+                  const SizedBox(height: 20),
+
+                  // Action buttons
+                  Row(
+                    children: [
+                      if (isAlreadyAuthorized) ...[
+                        TextButton.icon(
+                          onPressed: _isLoading ? null : _clearAuth,
+                          icon: const Icon(Icons.logout_rounded,
+                              size: 16, color: Color(0xFFEF4444)),
+                          label: const Text('Выйти',
+                              style: TextStyle(color: Color(0xFFEF4444))),
+                        ),
+                        const Spacer(),
+                      ] else
+                        const Spacer(),
+                      FilledButton.icon(
+                        onPressed: _isLoading ? null : _testAndSave,
+                        icon: _isLoading
+                            ? const SizedBox(
+                                width: 16,
+                                height: 16,
+                                child: CircularProgressIndicator(
+                                  strokeWidth: 2,
+                                  color: Colors.white,
+                                ),
+                              )
+                            : const Icon(Icons.check_rounded, size: 18),
+                        label: Text(_isLoading ? 'Проверка...' : 'Сохранить'),
+                        style: FilledButton.styleFrom(
+                          backgroundColor: const Color(0xFF0055AA),
+                          shape: RoundedRectangleBorder(
+                            borderRadius: BorderRadius.circular(14),
+                          ),
+                          padding: const EdgeInsets.symmetric(
+                              horizontal: 20, vertical: 12),
+                        ),
+                      ),
+                    ],
+                  ),
+                ],
+              ),
+            ),
+          ),
+        ),
+      ),
+    );
+  }
+}
+
+class _BenefitRow extends StatelessWidget {
+  const _BenefitRow({required this.icon, required this.text});
+
+  final IconData icon;
+  final String text;
+
+  @override
+  Widget build(BuildContext context) {
+    return Row(
+      children: [
+        Icon(icon, size: 14, color: const Color(0xFF0077EE)),
+        const SizedBox(width: 8),
+        Expanded(
+          child: Text(
+            text,
+            style: const TextStyle(fontSize: 12, fontWeight: FontWeight.w500),
+          ),
+        ),
+      ],
+    );
+  }
+}

lib/features/providers/presentation/widgets/provider_card.dart

@@ -2,6 +2,7 @@ import 'package:flutter/material.dart';
 import 'package:flutter/services.dart';
 
 import '../../../../backend/backend.dart';
+import 'e621_auth_dialog.dart';
 
 class ProviderCard extends StatelessWidget {
   const ProviderCard({
@@ -9,6 +10,7 @@ class ProviderCard extends StatelessWidget {
     required this.onToggle,
     required this.onEdit,
     required this.onDelete,
+    this.onSaveConfig,
     super.key,
   });
 
@@ -16,6 +18,7 @@ class ProviderCard extends StatelessWidget {
   final ValueChanged<bool> onToggle;
   final VoidCallback onEdit;
   final VoidCallback onDelete;
+  final ValueChanged<ContentProviderConfig>? onSaveConfig;
 
   @override
   Widget build(BuildContext context) {
@@ -164,6 +167,16 @@ class ProviderCard extends StatelessWidget {
                               color: theme.colorScheme.primary,
                               isDark: isDark,
                             ),
+                            if (config.apiType.toLowerCase() == 'e621')
+                              _GlassPill(
+                                label: (config.customHeaders['query.login']?.isNotEmpty ?? false)
+                                    ? 'e621: ${config.customHeaders['query.login']}'
+                                    : (isRu ? 'e621: Гость (макс 2 тега)' : 'e621: Guest (max 2 tags)'),
+                                color: (config.customHeaders['query.login']?.isNotEmpty ?? false)
+                                    ? const Color(0xFF10B981)
+                                    : Colors.amber,
+                                isDark: isDark,
+                              ),
                           ],
                         ),
                       ],
@@ -231,10 +244,30 @@ class ProviderCard extends StatelessWidget {
 
               const SizedBox(height: 12),
 
-              // Row 3: Action Buttons (Edit & Delete)
+              // Row 3: Action Buttons (Edit & Delete & e621 Auth)
               Row(
                 mainAxisAlignment: MainAxisAlignment.end,
                 children: [
+                  if (config.apiType.toLowerCase() == 'e621' && onSaveConfig != null) ...[
+                    _GlassActionButton(
+                      icon: Icons.vpn_key_rounded,
+                      label: (config.customHeaders['query.login']?.isNotEmpty ?? false)
+                          ? (isRu ? 'Аккаунт' : 'Account')
+                          : (isRu ? 'API Ключ' : 'API Key'),
+                      color: const Color(0xFF0077EE),
+                      isDark: isDark,
+                      onTap: () {
+                        HapticFeedback.lightImpact();
+                        E621AuthDialog.show(
+                          context,
+                          config: config,
+                          onSaved: onSaveConfig!,
+                        );
+                      },
+                    ),
+                    const SizedBox(width: 8),
+                  ],
+
                   // Edit Action Button
                   _GlassActionButton(
                     icon: Icons.edit_rounded,

lib/shared/widgets/app_shell.dart

@@ -580,7 +580,7 @@ class _DesktopShellState extends State<_DesktopShell>
                                                         ),
                                                       ),
                                                       child: Text(
-                                                        'v3.6.4',
+                                                        'v3.7.2',
                                                         style: TextStyle(
                                                           fontSize: 10,
                                                           fontWeight:

lib/shared/widgets/post_card.dart

@@ -642,13 +642,15 @@ class _FeedVideoPreviewState extends State<_FeedVideoPreview> {
         AnimatedOpacity(
           opacity: _ready ? 1 : 0,
           duration: AppMotion.duration(context, 180),
-          child: Video(
-            controller: _controller,
-            fit: BoxFit.cover,
-            fill: Colors.transparent,
-            controls: null,
-            pauseUponEnteringBackgroundMode: false,
-            resumeUponEnteringForegroundMode: false,
+          child: ColoredBox(
+            color: Colors.black,
+            child: Video(
+              controller: _controller,
+              fit: BoxFit.cover,
+              controls: null,
+              pauseUponEnteringBackgroundMode: false,
+              resumeUponEnteringForegroundMode: false,
+            ),
           ),
         ),
       ],

pubspec.yaml

@@ -1,7 +1,7 @@
 name: gel_rule_app
 description: Local backend/core layer for a Flutter booru browser app.
 publish_to: "none"
-version: 3.6.4+86
+version: 3.7.2+90
 
 environment:
   sdk: ">=3.3.0 <4.0.0"