feat(pawchive): export local favorites to Pawchive and two-way sync (v2.3.10)

- Android: expose getSupportedAbis/getPrimaryAbi via rulegel/device channel (Build.SUPPORTED_ABIS)
- AppUpdateInfo: add apkArm64Url, apkArmv7Url, apkX86_64Url fields + apkUrlForAbi() selector
- UpdateService: parse per-ABI APK assets by filename pattern, async assetUrlForCurrentPlatform
- app.dart + settings_screen.dart: await new async URL resolver
- Bump version to 2.3.8+48

android/app/src/main/kotlin/com/example/gel_rule_app/MainActivity.kt

@@ -54,6 +54,8 @@ class MainActivity : FlutterActivity() {
                             setPreferredRefreshRate(hz.toFloat())
                             result.success(null)
                         }
+                        "getSupportedAbis" -> result.success(Build.SUPPORTED_ABIS.toList())
+                        "getPrimaryAbi" -> result.success(Build.SUPPORTED_ABIS.firstOrNull() ?: "armeabi-v7a")
                         else -> result.notImplemented()
                     }
                 } catch (error: Throwable) {

lib/app/app.dart

@@ -149,7 +149,7 @@ class _AppOverlayState extends ConsumerState<_AppOverlay> {
 
   Future<void> _downloadUpdate(AppUpdateInfo info) async {
     final updateService = ref.read(updateServiceProvider);
-    final assetUrl = updateService.assetUrlForCurrentPlatform(info);
+    final assetUrl = await updateService.assetUrlForCurrentPlatform(info);
     if (assetUrl == null) {
       final url = Uri.tryParse(info.htmlUrl);
       if (url != null) {

lib/app/changelog.dart

@@ -1,4 +1,42 @@
 const lunarisChangelog = [
+  LunarisChange(
+    version: '2.3.10',
+    title: 'Выгрузка локального избранного в Pawchive и двусторонняя синхронизация',
+    bullets: [
+      'Экспорт локального избранного: добавлена возможность выгрузить всех ваших локальных авторов из приложения прямо в аккаунт Pawchive на сервере в 1 клик.',
+      'Двусторонняя синхронизация: переключатель двусторонней синхронизации объединяет коллекции — скачивает новых авторов с сервера и отправляет локальных на сервер Pawchive.',
+      'Кнопка выгрузки в карточке аккаунта: быстрая кнопка со стрелкой вверх и пункт контекстного меню «Выгрузить в Pawchive» для любого подключённого аккаунта.',
+      'Синхронизация в реальном времени с любых провайдеров: при добавлении автора в избранное в лентах Kemono, Coomer или Pawchive изменение мгновенно передаётся на сервер Pawchive.',
+    ],
+  ),
+  LunarisChange(
+    version: '2.3.9',
+    title: 'Исправление входа и синхронизации аккаунтов Pawchive',
+    bullets: [
+      'Исправлены API эндпоинты Pawchive: пути запросов избранных авторов и управления подписками приведены в соответствие со спецификацией API v1 (/api/v1/account/favorites, /api/v1/favorites/creator/...).',
+      'Устранена ошибка 404: авторизация по логину и паролю, а также по session cookie теперь успешно завершается и сразу синхронизирует всех авторов.',
+      'Информативные ошибки: понятные сообщения на русском при неверном пароле или сбое сети вместо сырых исключений Dio.',
+    ],
+  ),
+  LunarisChange(
+    version: '2.3.8',
+    title: 'ABI-Aware Auto-Update — правильный APK для вашего процессора',
+    bullets: [
+      'Определение архитектуры Android: приложение читает Build.SUPPORTED_ABIS (arm64-v8a, armeabi-v7a, x86_64) через нативный канал.',
+      'Точный APK из Gitea: при обновлении скачивается per-ABI APK (app-arm64-v8a-release.apk и т.д.), а не один общий файл.',
+      'Fallback: нет per-ABI APK → универсальный APK → страница релиза в браузере.',
+      'Кеш ABI: архитектура определяется один раз за сеанс.',
+    ],
+  ),
+  LunarisChange(
+    version: '2.3.7',
+    title: 'Lazy Media Dimensions for Pawchive & Unknown-Size Providers',
+    bullets: [
+      'Auto-Resolve Image Dimensions: when a provider (such as Pawchive) does not supply width/height metadata, the app now lazily resolves the real pixel dimensions by decoding the image in the background and displays them as soon as they are ready.',
+      'No More "0 × 0": the resolution badge now shows "… × …" while dimensions are being fetched, and the correct resolution (e.g. 1920 × 1080) once decoded. The badge is hidden entirely for video/link posts where dimensions cannot be resolved.',
+      'Session Cache: resolved image dimensions are cached in memory for the lifetime of the app so repeated visits to the same post do not trigger re-downloads.',
+    ],
+  ),
   LunarisChange(
     version: '2.3.6',
     title: 'Pawchive Accounts Integration & Favorites Synchronization',

lib/backend/models/app_update_info.dart

@@ -7,6 +7,9 @@ class AppUpdateInfo {
     required this.htmlUrl,
     required this.publishedAt,
     this.apkUrl,
+    this.apkArm64Url,
+    this.apkArmv7Url,
+    this.apkX86_64Url,
     this.windowsInstallerUrl,
     this.portableZipUrl,
     this.linuxTarGzUrl,
@@ -18,13 +21,36 @@ class AppUpdateInfo {
   final String body;
   final String htmlUrl;
   final DateTime? publishedAt;
+
+  /// Generic APK (fat / universal build). Used as a fallback.
   final String? apkUrl;
+
+  /// Per-ABI APKs produced by `flutter build apk --split-per-abi`.
+  final String? apkArm64Url;   // app-arm64-v8a-release.apk
+  final String? apkArmv7Url;   // app-armeabi-v7a-release.apk
+  final String? apkX86_64Url;  // app-x86_64-release.apk
+
   final String? windowsInstallerUrl;
   final String? portableZipUrl;
   final String? linuxTarGzUrl;
 
+  /// Returns the best APK URL for [abi], falling back to the generic APK.
+  String? apkUrlForAbi(String abi) {
+    if (abi.contains('arm64') || abi == 'arm64-v8a') {
+      return apkArm64Url ?? apkUrl;
+    }
+    if (abi.contains('x86_64')) {
+      return apkX86_64Url ?? apkUrl;
+    }
+    // armeabi-v7a and everything else
+    return apkArmv7Url ?? apkArm64Url ?? apkUrl;
+  }
+
   bool get hasAssets =>
       apkUrl != null ||
+      apkArm64Url != null ||
+      apkArmv7Url != null ||
+      apkX86_64Url != null ||
       windowsInstallerUrl != null ||
       portableZipUrl != null ||
       linuxTarGzUrl != null;

lib/backend/services/pawchive_sync_service.dart

@@ -3,7 +3,6 @@ import 'package:dio/dio.dart';
 import 'package:flutter_riverpod/flutter_riverpod.dart';
 
 import '../../core/http/dio_client.dart';
-import '../di/backend_providers.dart';
 import '../models/favorite_artist_item.dart';
 import '../models/pawchive_account.dart';
 import 'settings_service.dart';
@@ -17,12 +16,32 @@ class PawchiveSyncResult {
     required this.updatedSettings,
     required this.newlyAddedToLocal,
     required this.totalSyncedCount,
+    this.pushedToRemoteCount = 0,
     this.errorMessage,
   });
 
   final AppSettings updatedSettings;
   final int newlyAddedToLocal;
   final int totalSyncedCount;
+  final int pushedToRemoteCount;
+  final String? errorMessage;
+
+  bool get isSuccess => errorMessage == null;
+}
+
+class PawchivePushResult {
+  const PawchivePushResult({
+    required this.pushedCount,
+    required this.totalRemoteCount,
+    required this.totalLocalCandidates,
+    this.updatedSettings,
+    this.errorMessage,
+  });
+
+  final int pushedCount;
+  final int totalRemoteCount;
+  final int totalLocalCandidates;
+  final AppSettings? updatedSettings;
   final String? errorMessage;
 
   bool get isSuccess => errorMessage == null;
@@ -98,10 +117,25 @@ class PawchiveSyncService {
       }
 
       // Check if redirect points back to login with flash error
-      if (redirectLocation.contains('/account/login')) {
+      if (redirectLocation.contains('/account/login') ||
+          redirectLocation.contains('/login')) {
         throw StateError('Неверный логин или пароль');
       }
 
+      // Check for flash errors in session cookie if present
+      try {
+        final dotIdx = sessionValue.indexOf('.');
+        final payloadBase64 =
+            dotIdx != -1 ? sessionValue.substring(0, dotIdx) : sessionValue;
+        final normalizedB64 = base64Url.normalize(payloadBase64);
+        final decoded = utf8.decode(base64Url.decode(normalizedB64));
+        if (decoded.contains('is incorrect') || decoded.contains('_flashes')) {
+          throw StateError('Неверный логин или пароль');
+        }
+      } catch (e) {
+        if (e is StateError) rethrow;
+      }
+
       // Verify session and fetch initial artists
       final remoteArtists = await fetchRemoteFavoriteArtists(
         baseUrl: normalizedBase,
@@ -118,6 +152,15 @@ class PawchiveSyncService {
         isActive: true,
         syncedArtistsCount: remoteArtists.length,
       );
+    } on DioException catch (e) {
+      final code = e.response?.statusCode;
+      if (code == 401 || code == 403) {
+        throw StateError('Неверный логин или пароль');
+      } else if (code != null) {
+        throw StateError('Ошибка сервера Pawchive (HTTP $code)');
+      } else {
+        throw StateError('Ошибка сети: ${e.message ?? e.type.name}');
+      }
     } catch (e) {
       if (e is StateError || e is ArgumentError) rethrow;
       throw StateError('Ошибка входа в Pawchive: $e');
@@ -156,7 +199,17 @@ class PawchiveSyncService {
         isActive: true,
         syncedArtistsCount: remoteArtists.length,
       );
+    } on DioException catch (e) {
+      final code = e.response?.statusCode;
+      if (code == 401 || code == 403) {
+        throw StateError('Сессия недействительна или истекла');
+      } else if (code != null) {
+        throw StateError('Ошибка сервера Pawchive (HTTP $code)');
+      } else {
+        throw StateError('Ошибка сети: ${e.message ?? e.type.name}');
+      }
     } catch (e) {
+      if (e is StateError || e is ArgumentError) rethrow;
       throw StateError('Сессия недействительна или истекла: $e');
     }
   }
@@ -172,7 +225,7 @@ class PawchiveSyncService {
         : baseUrl;
 
     final response = await _dio.get<dynamic>(
-      '$normalizedBase/account/favorites',
+      '$normalizedBase/api/v1/account/favorites',
       queryParameters: {'type': 'artist'},
       options: Options(
         headers: {
@@ -180,9 +233,17 @@ class PawchiveSyncService {
           'Accept': 'application/json',
           'User-Agent': 'Lunaris/2.0.1 Flutter local booru browser',
         },
+        validateStatus: (status) => status != null && status < 500,
       ),
     );
 
+    if (response.statusCode == 401 || response.statusCode == 403) {
+      throw StateError('Сессия истекла или недействительна');
+    }
+    if (response.statusCode != 200) {
+      throw StateError('Ошибка сервера Pawchive (HTTP ${response.statusCode})');
+    }
+
     final data = response.data;
     if (data is! List) return const [];
 
@@ -208,10 +269,12 @@ class PawchiveSyncService {
   }
 
   /// Synchronizes a specific Pawchive account with current local AppSettings.
+  /// If [pushLocalPawchiveArtists] is true (or [settings.pawchiveBidirectionalSync] is enabled),
+  /// local favorites are also pushed to the Pawchive server.
   Future<PawchiveSyncResult> syncAccountFavorites({
     required PawchiveAccount account,
     required AppSettings settings,
-    bool pushLocalPawchiveArtists = false,
+    bool? pushLocalPawchiveArtists,
   }) async {
     try {
       final remoteArtists = await fetchRemoteFavoriteArtists(
@@ -221,40 +284,57 @@ class PawchiveSyncService {
 
       final currentFavorites = List<String>.from(settings.favoriteArtists);
       final existingKeys = <String>{};
+      final existingServiceId = <String>{};
       for (final raw in currentFavorites) {
         try {
           final parsed = FavoriteArtistItem.fromJson(
             jsonDecode(raw) as Map<String, dynamic>,
           );
           existingKeys.add(parsed.key);
+          if (parsed.service.isNotEmpty && parsed.id.isNotEmpty) {
+            existingServiceId.add('${parsed.service}:${parsed.id}'.toLowerCase());
+          }
         } catch (_) {}
       }
 
       var addedCount = 0;
       for (final artist in remoteArtists) {
-        if (!existingKeys.contains(artist.key)) {
+        final pair = '${artist.service}:${artist.id}'.toLowerCase();
+        if (!existingKeys.contains(artist.key) && !existingServiceId.contains(pair)) {
           currentFavorites.insert(0, jsonEncode(artist.toJson()));
           existingKeys.add(artist.key);
+          existingServiceId.add(pair);
           addedCount++;
         }
       }
 
-      // Optionally push local Pawchive artists to remote
+      var pushedCount = 0;
-      if (pushLocalPawchiveArtists) {
+      final shouldPush =
-        final remoteKeys = remoteArtists.map((a) => a.key).toSet();
+          pushLocalPawchiveArtists ?? settings.pawchiveBidirectionalSync;
+      if (shouldPush) {
+        final remotePairSet = remoteArtists
+            .map((a) => '${a.service}:${a.id}'.toLowerCase())
+            .toSet();
+
         for (final raw in currentFavorites) {
           try {
             final parsed = FavoriteArtistItem.fromJson(
               jsonDecode(raw) as Map<String, dynamic>,
             );
-            if (parsed.providerId == 'pawchive' &&
+            if (parsed.service.isNotEmpty && parsed.id.isNotEmpty) {
-                !remoteKeys.contains(parsed.key)) {
+              final pair = '${parsed.service}:${parsed.id}'.toLowerCase();
-              await toggleRemoteFavorite(
+              if (!remotePairSet.contains(pair)) {
-                account: account,
+                final ok = await toggleRemoteFavorite(
-                service: parsed.service,
+                  account: account,
-                artistId: parsed.id,
+                  service: parsed.service,
-                isFavorite: true,
+                  artistId: parsed.id,
-              );
+                  isFavorite: true,
+                );
+                if (ok) {
+                  pushedCount++;
+                  remotePairSet.add(pair);
+                }
+              }
             }
           } catch (_) {}
         }
@@ -263,7 +343,7 @@ class PawchiveSyncService {
       // Update account sync stats in settings
       final updatedAccount = account.copyWith(
         lastSyncedAt: DateTime.now(),
-        syncedArtistsCount: remoteArtists.length,
+        syncedArtistsCount: remoteArtists.length + pushedCount,
       );
 
       final updatedAccountsList = settings.parsedPawchiveAccounts.map((a) {
@@ -279,45 +359,125 @@ class PawchiveSyncService {
       return PawchiveSyncResult(
         updatedSettings: newSettings,
         newlyAddedToLocal: addedCount,
-        totalSyncedCount: remoteArtists.length,
+        pushedToRemoteCount: pushedCount,
+        totalSyncedCount: remoteArtists.length + pushedCount,
       );
     } catch (e) {
       return PawchiveSyncResult(
         updatedSettings: settings,
         newlyAddedToLocal: 0,
+        pushedToRemoteCount: 0,
         totalSyncedCount: 0,
         errorMessage: e.toString(),
       );
     }
   }
 
+  /// Explicitly pushes all local favorite artists into a specified Pawchive account.
+  Future<PawchivePushResult> pushLocalFavoritesToAccount({
+    required PawchiveAccount account,
+    required AppSettings settings,
+  }) async {
+    try {
+      final remoteArtists = await fetchRemoteFavoriteArtists(
+        baseUrl: account.baseUrl,
+        sessionCookie: account.sessionCookie,
+      );
+
+      final remotePairSet = remoteArtists
+          .map((a) => '${a.service}:${a.id}'.toLowerCase())
+          .toSet();
+
+      var pushedCount = 0;
+      var totalLocalCandidates = 0;
+
+      for (final raw in settings.favoriteArtists) {
+        try {
+          final parsed = FavoriteArtistItem.fromJson(
+            jsonDecode(raw) as Map<String, dynamic>,
+          );
+          if (parsed.service.isNotEmpty && parsed.id.isNotEmpty) {
+            totalLocalCandidates++;
+            final pair = '${parsed.service}:${parsed.id}'.toLowerCase();
+            if (!remotePairSet.contains(pair)) {
+              final ok = await toggleRemoteFavorite(
+                account: account,
+                service: parsed.service,
+                artistId: parsed.id,
+                isFavorite: true,
+              );
+              if (ok) {
+                pushedCount++;
+                remotePairSet.add(pair);
+              }
+            }
+          }
+        } catch (_) {}
+      }
+
+      final updatedAccount = account.copyWith(
+        lastSyncedAt: DateTime.now(),
+        syncedArtistsCount: remoteArtists.length + pushedCount,
+      );
+
+      final updatedAccountsList = settings.parsedPawchiveAccounts.map((a) {
+        return a.id == updatedAccount.id ? updatedAccount : a;
+      }).toList();
+
+      final newSettings = settings.copyWith(
+        pawchiveAccounts:
+            updatedAccountsList.map((a) => jsonEncode(a.toJson())).toList(),
+      );
+
+      return PawchivePushResult(
+        pushedCount: pushedCount,
+        totalRemoteCount: remoteArtists.length + pushedCount,
+        totalLocalCandidates: totalLocalCandidates,
+        updatedSettings: newSettings,
+      );
+    } catch (e) {
+      return PawchivePushResult(
+        pushedCount: 0,
+        totalRemoteCount: 0,
+        totalLocalCandidates: 0,
+        errorMessage: e.toString(),
+      );
+    }
+  }
+
   /// Synchronizes ALL connected Pawchive accounts with local AppSettings.
   Future<PawchiveSyncResult> syncAllAccounts({
     required AppSettings settings,
+    bool? pushLocalArtists,
   }) async {
     final accounts = settings.parsedPawchiveAccounts;
     if (accounts.isEmpty) {
       return PawchiveSyncResult(
         updatedSettings: settings,
         newlyAddedToLocal: 0,
+        pushedToRemoteCount: 0,
         totalSyncedCount: 0,
         errorMessage: 'Нет добавленных аккаунтов Pawchive',
       );
     }
 
+    final doPush = pushLocalArtists ?? settings.pawchiveBidirectionalSync;
     var runningSettings = settings;
     var totalAdded = 0;
     var totalSynced = 0;
+    var totalPushed = 0;
     String? firstError;
 
     for (final account in accounts) {
       final res = await syncAccountFavorites(
         account: account,
         settings: runningSettings,
+        pushLocalPawchiveArtists: doPush,
       );
       if (res.isSuccess) {
         runningSettings = res.updatedSettings;
         totalAdded += res.newlyAddedToLocal;
+        totalPushed += res.pushedToRemoteCount;
         totalSynced += res.totalSyncedCount;
       } else {
         firstError ??= res.errorMessage;
@@ -327,6 +487,7 @@ class PawchiveSyncService {
     return PawchiveSyncResult(
       updatedSettings: runningSettings,
       newlyAddedToLocal: totalAdded,
+      pushedToRemoteCount: totalPushed,
       totalSyncedCount: totalSynced,
       errorMessage: firstError,
     );
@@ -344,7 +505,7 @@ class PawchiveSyncService {
         ? account.baseUrl.substring(0, account.baseUrl.length - 1)
         : account.baseUrl;
 
-    final path = '$normalizedBase/favorites/creator/$service/$artistId';
+    final path = '$normalizedBase/api/v1/favorites/creator/$service/$artistId';
     final options = Options(
       headers: {
         'Cookie': 'session=$cleanCookie',

lib/backend/services/settings_service.dart

@@ -51,6 +51,7 @@ class AppSettings {
     required this.lastFeedScrollOffset,
     this.favoriteArtists = const [],
     this.pawchiveAccounts = const [],
+    this.pawchiveBidirectionalSync = false,
     this.skippedUpdateVersion,
     this.lastUpdateCheckAt,
     this.defaultRatingFilter,
@@ -66,6 +67,7 @@ class AppSettings {
 
   final List<String> favoriteArtists;
   final List<String> pawchiveAccounts;
+  final bool pawchiveBidirectionalSync;
   final List<String> enabledProviderIds;
   final bool nsfwEnabled;
   final int cacheTtlHours;
@@ -122,6 +124,7 @@ class AppSettings {
     providerPriority: {'gelbooru': 0, 'rule34': 1, 'realbooru': 2},
     favoriteArtists: [],
     pawchiveAccounts: [],
+    pawchiveBidirectionalSync: false,
     themeMode: 'dark',
     languageCode: 'ru',
     appSeedColor: 0xFFE84D8A,
@@ -205,6 +208,7 @@ class AppSettings {
     bool clearLastFeedRating = false,
     List<String>? favoriteArtists,
     List<String>? pawchiveAccounts,
+    bool? pawchiveBidirectionalSync,
     bool? amoledMode,
     bool? useDynamicColor,
     String? gridMode,
@@ -216,6 +220,8 @@ class AppSettings {
     return AppSettings(
       favoriteArtists: favoriteArtists ?? this.favoriteArtists,
       pawchiveAccounts: pawchiveAccounts ?? this.pawchiveAccounts,
+      pawchiveBidirectionalSync:
+          pawchiveBidirectionalSync ?? this.pawchiveBidirectionalSync,
       enabledProviderIds: enabledProviderIds ?? this.enabledProviderIds,
       nsfwEnabled: nsfwEnabled ?? this.nsfwEnabled,
       cacheTtlHours: cacheTtlHours ?? this.cacheTtlHours,
@@ -276,6 +282,7 @@ class AppSettings {
   Map<String, dynamic> toJson() => {
         'favoriteArtists': favoriteArtists,
         'pawchiveAccounts': pawchiveAccounts,
+        'pawchiveBidirectionalSync': pawchiveBidirectionalSync,
         'enabledProviderIds': enabledProviderIds,
         'nsfwEnabled': nsfwEnabled,
         'cacheTtlHours': cacheTtlHours,
@@ -421,6 +428,9 @@ class AppSettings {
         pawchiveAccounts: List<String>.from(
           (json['pawchiveAccounts'] as List?) ?? defaults.pawchiveAccounts,
         ),
+        pawchiveBidirectionalSync:
+            (json['pawchiveBidirectionalSync'] as bool?) ??
+                defaults.pawchiveBidirectionalSync,
         skippedUpdateVersion: json['skippedUpdateVersion'] as String?,
         lastUpdateCheckAt: json['lastUpdateCheckAt'] as String?,
         defaultRatingFilter: json['defaultRatingFilter'] as String?,

lib/backend/services/update_service.dart

@@ -1,6 +1,8 @@
 import 'package:dio/dio.dart';
 import 'dart:io';
 
+import 'package:flutter/services.dart';
+
 import '../../app/app_version.dart';
 import '../../core/errors/failure.dart';
 import '../../core/utils/result.dart';
@@ -15,9 +17,39 @@ class UpdateService {
   static const releasesUrl =
       'https://gitea.rardogsynapse.online/api/v1/repos/RarDog/Lunaris/releases';
 
+  static const _deviceChannel = MethodChannel('rulegel/device');
+
   final Dio _dio;
   final SettingsService _settingsService;
 
+  // Cached primary ABI (e.g. "arm64-v8a").
+  String? _cachedPrimaryAbi;
+
+  /// Returns the primary ABI of the running device.
+  /// On non-Android platforms returns an empty string.
+  Future<String> getPrimaryAbi() async {
+    if (_cachedPrimaryAbi != null) return _cachedPrimaryAbi!;
+    if (!Platform.isAndroid) return '';
+    try {
+      final abi = await _deviceChannel.invokeMethod<String>('getPrimaryAbi');
+      _cachedPrimaryAbi = abi ?? 'armeabi-v7a';
+    } catch (_) {
+      _cachedPrimaryAbi = 'armeabi-v7a';
+    }
+    return _cachedPrimaryAbi!;
+  }
+
+  /// Returns all supported ABIs of the running device.
+  Future<List<String>> getSupportedAbis() async {
+    if (!Platform.isAndroid) return const [];
+    try {
+      final abis = await _deviceChannel.invokeMethod<List<Object?>>('getSupportedAbis');
+      return abis?.whereType<String>().toList() ?? const [];
+    } catch (_) {
+      return const [];
+    }
+  }
+
   Future<Result<AppUpdateInfo?>> checkForUpdates({bool force = false}) async {
     final settingsResult = await _settingsService.getSettings();
     final settings = settingsResult is Success<AppSettings>
@@ -97,21 +129,40 @@ class UpdateService {
   AppUpdateInfo _releaseFromJson(Map<String, dynamic> json) {
     final tag = (json['tag_name'] ?? '').toString();
     final assets = (json['assets'] as List?) ?? const [];
+
     String? apkUrl;
+    String? apkArm64Url;
+    String? apkArmv7Url;
+    String? apkX86_64Url;
     String? installerUrl;
     String? portableUrl;
     String? linuxTarGzUrl;
+
     for (final item in assets.whereType<Map>()) {
       final name = (item['name'] ?? '').toString().toLowerCase();
       final url = (item['browser_download_url'] ?? '').toString();
       if (url.isEmpty) continue;
-      if (name.endsWith('.apk')) apkUrl = url;
+
+      if (name.endsWith('.apk')) {
+        // Detect per-ABI APKs by name pattern produced by --split-per-abi.
+        if (name.contains('arm64-v8a') || name.contains('arm64_v8a')) {
+          apkArm64Url = url;
+        } else if (name.contains('armeabi-v7a') || name.contains('armeabi_v7a')) {
+          apkArmv7Url = url;
+        } else if (name.contains('x86_64')) {
+          apkX86_64Url = url;
+        } else {
+          // Universal / fat APK
+          apkUrl = url;
+        }
+      }
       if (name.endsWith('.exe')) installerUrl = url;
       if (name.endsWith('.zip')) portableUrl = url;
       if (name.endsWith('.tar.gz') || name.endsWith('.tgz')) {
         linuxTarGzUrl = url;
       }
     }
+
     return AppUpdateInfo(
       version: _versionFromTag(tag),
       tagName: tag,
@@ -120,15 +171,21 @@ class UpdateService {
       htmlUrl: (json['html_url'] ?? '').toString(),
       publishedAt: DateTime.tryParse((json['published_at'] ?? '').toString()),
       apkUrl: apkUrl,
+      apkArm64Url: apkArm64Url,
+      apkArmv7Url: apkArmv7Url,
+      apkX86_64Url: apkX86_64Url,
       windowsInstallerUrl: installerUrl,
       portableZipUrl: portableUrl,
       linuxTarGzUrl: linuxTarGzUrl,
     );
   }
 
-  String? assetUrlForCurrentPlatform(AppUpdateInfo info) {
+  /// Returns the download URL for the current platform/ABI.
+  /// Pass [abi] (e.g. from [getPrimaryAbi]) on Android for per-ABI selection.
+  Future<String?> assetUrlForCurrentPlatform(AppUpdateInfo info) async {
     if (Platform.isAndroid) {
-      return info.apkUrl;
+      final abi = await getPrimaryAbi();
+      return info.apkUrlForAbi(abi);
     }
     if (Platform.isLinux) {
       return info.linuxTarGzUrl ?? info.portableZipUrl;

lib/features/artists/presentation/artist_posts_screen.dart

@@ -439,7 +439,7 @@ class _ArtistPostsScreenState extends ConsumerState<ArtistPostsScreen> {
           settings.copyWith(favoriteArtists: current),
         );
 
-    if (widget.providerId == 'pawchive') {
+    if (widget.service.isNotEmpty && widget.artistId.isNotEmpty) {
       final activeAcc = settings.activePawchiveAccount;
       if (activeAcc != null) {
         unawaited(ref.read(pawchiveSyncServiceProvider).toggleRemoteFavorite(

lib/features/artists/presentation/artists_screen.dart

@@ -78,8 +78,8 @@ class _ArtistsScreenState extends ConsumerState<ArtistsScreen> {
           settings.copyWith(favoriteArtists: current),
         );
 
-    // Sync with active Pawchive account if artist belongs to Pawchive
+    // Sync with active Pawchive account if available
-    if (artist.providerId == 'pawchive') {
+    if (artist.service.isNotEmpty && artist.id.isNotEmpty) {
       final activeAcc = settings.activePawchiveAccount;
       if (activeAcc != null) {
         unawaited(ref.read(pawchiveSyncServiceProvider).toggleRemoteFavorite(

lib/features/artists/presentation/widgets/pawchive_accounts_sheet.dart

@@ -33,6 +33,7 @@ class _PawchiveAccountsSheetState extends ConsumerState<PawchiveAccountsSheet>
   bool _isAdding = false;
   bool _obscurePassword = true;
   String? _syncingAccountId;
+  String? _pushingAccountId;
   bool _syncingAll = false;
   String? _errorMessage;
 
@@ -207,10 +208,13 @@ class _PawchiveAccountsSheetState extends ConsumerState<PawchiveAccountsSheet>
             .read(settingsControllerProvider.notifier)
             .saveSettings(result.updatedSettings);
         if (mounted) {
+          final pushedMsg = result.pushedToRemoteCount > 0
+              ? ', выгружено в Pawchive: +${result.pushedToRemoteCount}'
+              : '';
           ScaffoldMessenger.of(context).showSnackBar(
             SnackBar(
               content: Text(
-                'Синхронизировано: ${result.totalSyncedCount} авторов (+${result.newlyAddedToLocal} новых)',
+                'Синхронизировано: ${result.totalSyncedCount} авторов (+${result.newlyAddedToLocal} новых в приложении$pushedMsg)',
               ),
             ),
           );
@@ -232,6 +236,92 @@ class _PawchiveAccountsSheetState extends ConsumerState<PawchiveAccountsSheet>
     }
   }
 
+  Future<void> _pushFavoritesToAccount(PawchiveAccount account) async {
+    final settings =
+        ref.read(appSettingsProvider).value ?? AppSettings.defaults;
+    final totalLocal = settings.favoriteArtists.length;
+    if (totalLocal == 0) {
+      ScaffoldMessenger.of(context).showSnackBar(
+        const SnackBar(content: Text('В локальном избранном пока нет авторов')),
+      );
+      return;
+    }
+
+    final confirmed = await showDialog<bool>(
+      context: context,
+      builder: (ctx) => AlertDialog(
+        title: const Text('Выгрузить избранное в Pawchive?'),
+        content: Text(
+          'Все локальные авторы из приложения ($totalLocal) будут добавлены в избранное аккаунта @${account.username} на сервере Pawchive.',
+        ),
+        actions: [
+          TextButton(
+            onPressed: () => Navigator.pop(ctx, false),
+            child: const Text('Отмена'),
+          ),
+          FilledButton.icon(
+            onPressed: () => Navigator.pop(ctx, true),
+            icon: const Icon(Icons.cloud_upload_rounded),
+            label: const Text('Выгрузить'),
+          ),
+        ],
+      ),
+    );
+
+    if (confirmed != true) return;
+
+    setState(() => _pushingAccountId = account.id);
+    try {
+      final syncService = ref.read(pawchiveSyncServiceProvider);
+      final result = await syncService.pushLocalFavoritesToAccount(
+        account: account,
+        settings: settings,
+      );
+
+      if (result.isSuccess) {
+        if (result.updatedSettings != null) {
+          await ref
+              .read(settingsControllerProvider.notifier)
+              .saveSettings(result.updatedSettings!);
+        }
+
+        if (mounted) {
+          if (result.pushedCount > 0) {
+            ScaffoldMessenger.of(context).showSnackBar(
+              SnackBar(
+                content: Text(
+                  'Выгружено ${result.pushedCount} авторов в @${account.username}! Всего в аккаунте: ${result.totalRemoteCount}.',
+                ),
+                backgroundColor: Colors.green.shade700,
+              ),
+            );
+          } else {
+            ScaffoldMessenger.of(context).showSnackBar(
+              SnackBar(
+                content: Text(
+                  'Все авторы (${result.totalLocalCandidates}) уже есть в аккаунте @${account.username}.',
+                ),
+              ),
+            );
+          }
+        }
+      } else {
+        if (mounted) {
+          ScaffoldMessenger.of(context).showSnackBar(
+            SnackBar(
+              content: Text('Ошибка выгрузки: ${result.errorMessage}'),
+              backgroundColor: Colors.red.shade700,
+            ),
+          );
+        }
+      }
+    } finally {
+      if (mounted) {
+        setState(() => _pushingAccountId = null);
+      }
+    }
+  }
+
   Future<void> _syncAllAccounts() async {
     setState(() => _syncingAll = true);
     try {
@@ -245,10 +335,13 @@ class _PawchiveAccountsSheetState extends ConsumerState<PawchiveAccountsSheet>
             .read(settingsControllerProvider.notifier)
             .saveSettings(result.updatedSettings);
         if (mounted) {
+          final pushedMsg = result.pushedToRemoteCount > 0
+              ? ', выгружено в Pawchive: +${result.pushedToRemoteCount}'
+              : '';
           ScaffoldMessenger.of(context).showSnackBar(
             SnackBar(
               content: Text(
-                'Все аккаунты синхронизированы! Всего: ${result.totalSyncedCount} (+${result.newlyAddedToLocal} новых)',
+                'Все аккаунты синхронизированы! Всего: ${result.totalSyncedCount} (+${result.newlyAddedToLocal} новых в приложении$pushedMsg)',
               ),
               backgroundColor: Colors.green.shade700,
             ),
@@ -445,6 +538,78 @@ class _PawchiveAccountsSheetState extends ConsumerState<PawchiveAccountsSheet>
                         ),
                       ),
                       ...accounts.map((acc) => _buildAccountCard(acc, scheme, theme)),
+                      const SizedBox(height: 12),
+
+                      // Two-way sync & Export to Pawchive panel
+                      Card(
+                        elevation: 0,
+                        color: scheme.surfaceContainerHigh.withValues(alpha: 0.6),
+                        shape: RoundedRectangleBorder(
+                          borderRadius: BorderRadius.circular(16),
+                          side: BorderSide(
+                            color: scheme.outlineVariant.withValues(alpha: 0.3),
+                          ),
+                        ),
+                        child: Padding(
+                          padding: const EdgeInsets.symmetric(horizontal: 16, vertical: 12),
+                          child: Column(
+                            crossAxisAlignment: CrossAxisAlignment.stretch,
+                            children: [
+                              Row(
+                                children: [
+                                  Icon(Icons.swap_vert_rounded, size: 20, color: scheme.primary),
+                                  const SizedBox(width: 8),
+                                  Expanded(
+                                    child: Text(
+                                      'Двусторонняя синхронизация',
+                                      style: theme.textTheme.titleSmall?.copyWith(
+                                        fontWeight: FontWeight.bold,
+                                      ),
+                                    ),
+                                  ),
+                                  Switch(
+                                    value: settings.pawchiveBidirectionalSync,
+                                    onChanged: (val) async {
+                                      final newSettings = settings.copyWith(
+                                        pawchiveBidirectionalSync: val,
+                                      );
+                                      await ref
+                                          .read(settingsControllerProvider.notifier)
+                                          .saveSettings(newSettings);
+                                    },
+                                  ),
+                                ],
+                              ),
+                              Text(
+                                'При обычной синхронизации также выгружать всех локальных авторов на сервер Pawchive.',
+                                style: TextStyle(
+                                  color: scheme.onSurfaceVariant,
+                                  fontSize: 12,
+                                ),
+                              ),
+                              const SizedBox(height: 10),
+                              OutlinedButton.icon(
+                                onPressed: (_syncingAll || _pushingAccountId != null)
+                                    ? null
+                                    : () {
+                                        final target = settings.activePawchiveAccount ?? accounts.first;
+                                        _pushFavoritesToAccount(target);
+                                      },
+                                icon: _pushingAccountId != null
+                                    ? const SizedBox(
+                                        width: 16,
+                                        height: 16,
+                                        child: CircularProgressIndicator(strokeWidth: 2),
+                                      )
+                                    : const Icon(Icons.cloud_upload_rounded, size: 18),
+                                label: Text(
+                                  'Выгрузить избранное (${settings.favoriteArtists.length}) в @${(settings.activePawchiveAccount ?? accounts.first).username}',
+                                ),
+                              ),
+                            ],
+                          ),
+                        ),
+                      ),
                       const SizedBox(height: 16),
                     ],
 
@@ -622,6 +787,8 @@ class _PawchiveAccountsSheetState extends ConsumerState<PawchiveAccountsSheet>
 
   Widget _buildAccountCard(PawchiveAccount acc, ColorScheme scheme, ThemeData theme) {
     final isSyncing = _syncingAccountId == acc.id;
+    final isPushing = _pushingAccountId == acc.id;
+    final isBusy = isSyncing || isPushing;
 
     return Card(
       margin: const EdgeInsets.only(bottom: 8),
@@ -687,6 +854,17 @@ class _PawchiveAccountsSheetState extends ConsumerState<PawchiveAccountsSheet>
         trailing: Row(
           mainAxisSize: MainAxisSize.min,
           children: [
+            IconButton(
+              icon: isPushing
+                  ? const SizedBox(
+                      width: 18,
+                      height: 18,
+                      child: CircularProgressIndicator(strokeWidth: 2),
+                    )
+                  : const Icon(Icons.cloud_upload_outlined),
+              tooltip: 'Выгрузить локальное избранное в этот аккаунт',
+              onPressed: isBusy ? null : () => _pushFavoritesToAccount(acc),
+            ),
             IconButton(
               icon: isSyncing
                   ? const SizedBox(
@@ -696,13 +874,15 @@ class _PawchiveAccountsSheetState extends ConsumerState<PawchiveAccountsSheet>
                     )
                   : const Icon(Icons.sync_rounded),
               tooltip: 'Синхронизировать этот аккаунт',
-              onPressed: isSyncing ? null : () => _syncSingleAccount(acc),
+              onPressed: isBusy ? null : () => _syncSingleAccount(acc),
             ),
             PopupMenuButton<String>(
               icon: const Icon(Icons.more_vert_rounded),
               onSelected: (val) {
                 if (val == 'active') {
                   _setActiveAccount(acc);
+                } else if (val == 'push') {
+                  _pushFavoritesToAccount(acc);
                 } else if (val == 'delete') {
                   _removeAccount(acc);
                 }
@@ -719,6 +899,16 @@ class _PawchiveAccountsSheetState extends ConsumerState<PawchiveAccountsSheet>
                       ],
                     ),
                   ),
+                const PopupMenuItem(
+                  value: 'push',
+                  child: Row(
+                    children: [
+                      Icon(Icons.cloud_upload_outlined, size: 20),
+                      SizedBox(width: 8),
+                      Text('Выгрузить в Pawchive'),
+                    ],
+                  ),
+                ),
                 const PopupMenuItem(
                   value: 'delete',
                   child: Row(

lib/features/post/presentation/post_details_screen.dart

@@ -1185,7 +1185,7 @@ class _CommentsSectionState extends ConsumerState<_CommentsSection> {
   }
 }
 
-class _PostInfoCard extends StatelessWidget {
+class _PostInfoCard extends StatefulWidget {
   const _PostInfoCard({
     required this.post,
     required this.strings,
@@ -1198,8 +1198,90 @@ class _PostInfoCard extends StatelessWidget {
   final DownloadedMedia? localMedia;
   final int? fileSizeBytes;
 
+  @override
+  State<_PostInfoCard> createState() => _PostInfoCardState();
+}
+
+class _PostInfoCardState extends State<_PostInfoCard> {
+  // Lazily resolved dimensions (used when post.width/height == 0).
+  int? _resolvedWidth;
+  int? _resolvedHeight;
+  bool _resolvingDimensions = false;
+
+  static final _dimensionCache = <String, (int, int)>{};
+
+  static bool _isImageType(String fileType) {
+    const imageTypes = {'image', 'jpeg', 'jpg', 'png', 'gif', 'webp', 'avif'};
+    return imageTypes.contains(fileType.toLowerCase());
+  }
+
+  @override
+  void initState() {
+    super.initState();
+    _maybeResolveDimensions();
+  }
+
+  @override
+  void didUpdateWidget(_PostInfoCard old) {
+    super.didUpdateWidget(old);
+    if (old.post.fileUrl != widget.post.fileUrl) {
+      _resolvedWidth = null;
+      _resolvedHeight = null;
+      _resolvingDimensions = false;
+      _maybeResolveDimensions();
+    }
+  }
+
+  void _maybeResolveDimensions() {
+    final post = widget.post;
+    // Only attempt lazy resolution when dimensions are unknown (0) and it's
+    // an image (not video/link which we can't resolve this way).
+    if (post.width != 0 || post.height != 0) return;
+    if (!_isImageType(post.fileType)) return;
+    final url = post.fileUrl.isNotEmpty ? post.fileUrl : post.sampleUrl;
+    if (url.isEmpty) return;
+
+    // Check cache first.
+    if (_dimensionCache.containsKey(url)) {
+      final cached = _dimensionCache[url]!;
+      _resolvedWidth = cached.$1;
+      _resolvedHeight = cached.$2;
+      return;
+    }
+
+    if (_resolvingDimensions) return;
+    _resolvingDimensions = true;
+
+    final imageProvider = NetworkImage(url);
+    final completer = imageProvider.resolve(ImageConfiguration.empty);
+    completer.addListener(
+      ImageStreamListener(
+        (info, _) {
+          final w = info.image.width;
+          final h = info.image.height;
+          _dimensionCache[url] = (w, h);
+          if (mounted) {
+            setState(() {
+              _resolvedWidth = w;
+              _resolvedHeight = h;
+              _resolvingDimensions = false;
+            });
+          }
+        },
+        onError: (_, __) {
+          if (mounted) setState(() => _resolvingDimensions = false);
+        },
+      ),
+    );
+  }
+
   @override
   Widget build(BuildContext context) {
+    final post = widget.post;
+    final strings = widget.strings;
+    final localMedia = widget.localMedia;
+    final fileSizeBytes = widget.fileSizeBytes;
+
     final theme = Theme.of(context);
     final scheme = theme.colorScheme;
     final artists = post.tagGroups['artist'] ??
@@ -1208,6 +1290,14 @@ class _PostInfoCard extends StatelessWidget {
             .map((t) => t.replaceFirst('artist:', ''))
             .toList();
 
+    // Determine which dimensions to display.
+    final displayWidth = post.width != 0 ? post.width : _resolvedWidth;
+    final displayHeight = post.height != 0 ? post.height : _resolvedHeight;
+    final hasDimensions = displayWidth != null && displayHeight != null;
+    final dimensionLabel = hasDimensions
+        ? '$displayWidth × $displayHeight'
+        : (_resolvingDimensions ? '… × …' : null);
+
     return Container(
       padding: const EdgeInsets.all(14),
       decoration: BoxDecoration(
@@ -1293,7 +1383,7 @@ class _PostInfoCard extends StatelessWidget {
                           ),
                         ),
                         Text(
-                          _formatDate(post.createdAt),
+                          _formatPostDate(post.createdAt),
                           style: theme.textTheme.bodySmall?.copyWith(
                             color: scheme.onSurfaceVariant,
                           ),
@@ -1321,8 +1411,8 @@ class _PostInfoCard extends StatelessWidget {
                       ),
                       const SizedBox(width: 4),
                       Text(
-                        fileSizeBytes != null && fileSizeBytes! > 0
+                        fileSizeBytes != null && fileSizeBytes > 0
-                            ? DownloadedMediaService.formatBytes(fileSizeBytes!)
+                            ? DownloadedMediaService.formatBytes(fileSizeBytes)
                             : (strings.ru ? 'Офлайн' : 'Offline'),
                         style: theme.textTheme.labelSmall?.copyWith(
                           color: scheme.onPrimaryContainer,
@@ -1341,10 +1431,11 @@ class _PostInfoCard extends StatelessWidget {
             runSpacing: 8,
             crossAxisAlignment: WrapCrossAlignment.center,
             children: [
-              _SpecBadge(
+              if (dimensionLabel != null)
-                icon: Icons.aspect_ratio_rounded,
+                _SpecBadge(
-                label: '${post.width} × ${post.height}',
+                  icon: Icons.aspect_ratio_rounded,
-              ),
+                  label: dimensionLabel,
+                ),
               if (post.fileType.isNotEmpty)
                 _SpecBadge(
                   icon: Icons.insert_drive_file_outlined,
@@ -1373,10 +1464,10 @@ class _PostInfoCard extends StatelessWidget {
       ),
     );
   }
+}
 
-  static String _formatDate(DateTime date) {
+String _formatPostDate(DateTime date) {
-    return '${date.year}-${date.month.toString().padLeft(2, '0')}-${date.day.toString().padLeft(2, '0')}';
+  return '${date.year}-${date.month.toString().padLeft(2, '0')}-${date.day.toString().padLeft(2, '0')}';
-  }
 }
 
 class _SpecBadge extends StatelessWidget {

lib/features/settings/presentation/settings_screen.dart

@@ -1030,7 +1030,7 @@ class _SettingsContentState extends ConsumerState<_SettingsContent> {
 
   Future<void> _downloadUpdate(WidgetRef ref, AppUpdateInfo info) async {
     final updateService = ref.read(updateServiceProvider);
-    final assetUrl = updateService.assetUrlForCurrentPlatform(info);
+    final assetUrl = await updateService.assetUrlForCurrentPlatform(info);
     if (assetUrl == null) {
       final url = Uri.tryParse(info.htmlUrl);
       if (url != null) {

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: 2.3.6+46
+version: 2.3.10+50
 
 environment:
   sdk: ">=3.3.0 <4.0.0"

test/backend/pawchive_sync_test.dart

@@ -253,7 +253,7 @@ void main() {
       );
       expect(addResult, isTrue);
       expect(lastMethod, equals('POST'));
-      expect(lastPath, equals('https://pawchive.pw/favorites/creator/fanbox/12345'));
+      expect(lastPath, equals('https://pawchive.pw/api/v1/favorites/creator/fanbox/12345'));
 
       final removeResult = await service.toggleRemoteFavorite(
         account: account,
@@ -263,7 +263,85 @@ void main() {
       );
       expect(removeResult, isTrue);
       expect(lastMethod, equals('DELETE'));
-      expect(lastPath, equals('https://pawchive.pw/favorites/creator/fanbox/12345'));
+      expect(lastPath, equals('https://pawchive.pw/api/v1/favorites/creator/fanbox/12345'));
+    });
+
+    test('pushLocalFavoritesToAccount exports local artists to Pawchive', () async {
+      final postedPaths = <String>[];
+      final dio = Dio();
+      dio.httpClientAdapter = _FakeAdapter((options) async {
+        if (options.path.endsWith('/api/v1/account/favorites')) {
+          final payload = jsonEncode([
+            {
+              'id': 'already_remote_1',
+              'service': 'fanbox',
+              'name': 'AlreadyRemote',
+            },
+          ]);
+          return ResponseBody.fromString(
+            payload,
+            200,
+            headers: {
+              Headers.contentTypeHeader: [Headers.jsonContentType],
+            },
+          );
+        }
+        if (options.method == 'POST' &&
+            options.path.contains('/api/v1/favorites/creator/')) {
+          postedPaths.add(options.path);
+          return ResponseBody.fromString('ok', 204);
+        }
+        return ResponseBody.fromString('Not found', 404);
+      });
+
+      final service = PawchiveSyncService(dio: dio);
+
+      const itemAlreadyRemote = FavoriteArtistItem(
+        id: 'already_remote_1',
+        service: 'fanbox',
+        providerId: 'pawchive',
+        name: 'AlreadyRemote',
+      );
+      const itemToUpload1 = FavoriteArtistItem(
+        id: 'local_creator_99',
+        service: 'patreon',
+        providerId: 'kemono',
+        name: 'LocalPatreonCreator',
+      );
+      const itemToUpload2 = FavoriteArtistItem(
+        id: 'local_creator_88',
+        service: 'subscribestar',
+        providerId: 'coomer',
+        name: 'LocalSubscribeStarCreator',
+      );
+
+      final settings = AppSettings.defaults.copyWith(
+        favoriteArtists: [
+          jsonEncode(itemAlreadyRemote.toJson()),
+          jsonEncode(itemToUpload1.toJson()),
+          jsonEncode(itemToUpload2.toJson()),
+        ],
+      );
+
+      final account = PawchiveAccount(
+        id: 'myacc',
+        username: 'myacc',
+        sessionCookie: 'session=123',
+        createdAt: DateTime.now(),
+      );
+
+      final pushResult = await service.pushLocalFavoritesToAccount(
+        account: account,
+        settings: settings,
+      );
+
+      expect(pushResult.isSuccess, isTrue);
+      expect(pushResult.pushedCount, equals(2));
+      expect(pushResult.totalLocalCandidates, equals(3));
+      expect(pushResult.totalRemoteCount, equals(3)); // 1 existing + 2 pushed
+      expect(postedPaths.length, equals(2));
+      expect(postedPaths[0], contains('/api/v1/favorites/creator/patreon/local_creator_99'));
+      expect(postedPaths[1], contains('/api/v1/favorites/creator/subscribestar/local_creator_88'));
     });
   });
 }