feat: ABI-aware auto-update — pick correct per-ABI APK from Gitea

- 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 +1,23 @@
 const lunarisChangelog = [
+  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/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/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: 2.3.8+48
 
 environment:
   sdk: ">=3.3.0 <4.0.0"