feat: desktop UI redesign and comprehensive PC hotkeys (v3.6.0)

README.md

@@ -14,7 +14,7 @@
 </p>
 
 <p align="center">
-  <a href="https://github.com/RarDog/Prisma/releases"><img src="https://img.shields.io/badge/Version-3.5.4-8A2BE2?style=for-the-badge&logo=semver&logoColor=white" alt="Version 3.5.4" /></a>
+  <a href="https://github.com/RarDog/Prisma/releases"><img src="https://img.shields.io/badge/Version-3.5.5-8A2BE2?style=for-the-badge&logo=semver&logoColor=white" alt="Version 3.5.5" /></a>
   <img src="https://img.shields.io/badge/Flutter-3.47+-02569B?style=for-the-badge&logo=flutter&logoColor=white" alt="Flutter" />
   <img src="https://img.shields.io/badge/Platform-Android%20%7C%20Linux%20%7C%20Windows%20%7C%20macOS-00C853?style=for-the-badge" alt="Platforms" />
   <a href="https://github.com/RarDog/Prisma/wiki"><img src="https://img.shields.io/badge/Wiki-Documentation-FF6F00?style=for-the-badge&logo=gitbook&logoColor=white" alt="Wiki" /></a>

README_RU.md

@@ -14,7 +14,7 @@
 </p>
 
 <p align="center">
-  <a href="https://github.com/RarDog/Prisma/releases"><img src="https://img.shields.io/badge/Version-3.5.4-8A2BE2?style=for-the-badge&logo=semver&logoColor=white" alt="Version 3.5.4" /></a>
+  <a href="https://github.com/RarDog/Prisma/releases"><img src="https://img.shields.io/badge/Version-3.5.5-8A2BE2?style=for-the-badge&logo=semver&logoColor=white" alt="Version 3.5.5" /></a>
   <img src="https://img.shields.io/badge/Flutter-3.47+-02569B?style=for-the-badge&logo=flutter&logoColor=white" alt="Flutter" />
   <img src="https://img.shields.io/badge/Platform-Android%20%7C%20Linux%20%7C%20Windows%20%7C%20macOS-00C853?style=for-the-badge" alt="Platforms" />
   <a href="https://github.com/RarDog/Prisma/wiki"><img src="https://img.shields.io/badge/Wiki-Documentation-FF6F00?style=for-the-badge&logo=gitbook&logoColor=white" alt="Wiki" /></a>

installer/build_linux_appimage.sh

@@ -0,0 +1,92 @@
+#!/usr/bin/env bash
+set -e
+
+SCRIPT_DIR="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)"
+ROOT_DIR="$(cd "${SCRIPT_DIR}/.." && pwd)"
+
+cd "${ROOT_DIR}"
+
+VERSION=$(grep 'version:' pubspec.yaml | head -n 1 | awk '{print $2}' | cut -d'+' -f1)
+if [ -z "$VERSION" ]; then
+  VERSION="3.5.5"
+fi
+
+echo "Building AppImage for Prisma v${VERSION}..."
+
+BUNDLE_DIR="${ROOT_DIR}/build/linux/x64/release/bundle"
+if [ ! -f "${BUNDLE_DIR}/gel_rule_app" ]; then
+  echo "Release bundle not found. Running 'flutter build linux --release'..."
+  flutter build linux --release
+fi
+
+APP_DIR="${ROOT_DIR}/build/AppDir"
+OUTPUT_DIR="${ROOT_DIR}/build"
+APPIMAGE_NAME="Prisma-v${VERSION}-linux-x86_64.AppImage"
+OUTPUT_APPIMAGE="${OUTPUT_DIR}/${APPIMAGE_NAME}"
+
+# Ensure appimagetool is available
+APPIMAGETOOL=""
+if command -v appimagetool >/dev/null 2>&1; then
+  APPIMAGETOOL="appimagetool"
+elif [ -f "${ROOT_DIR}/build/tools/appimagetool" ]; then
+  APPIMAGETOOL="${ROOT_DIR}/build/tools/appimagetool"
+else
+  echo "Downloading appimagetool..."
+  mkdir -p "${ROOT_DIR}/build/tools"
+  curl -fsSL https://github.com/AppImage/appimagetool/releases/download/continuous/appimagetool-x86_64.AppImage -o "${ROOT_DIR}/build/tools/appimagetool"
+  chmod +x "${ROOT_DIR}/build/tools/appimagetool"
+  APPIMAGETOOL="${ROOT_DIR}/build/tools/appimagetool"
+fi
+
+echo "Preparing AppDir at ${APP_DIR}..."
+rm -rf "${APP_DIR}"
+mkdir -p "${APP_DIR}"
+
+# Copy bundle contents
+cp -r "${BUNDLE_DIR}"/* "${APP_DIR}/"
+
+# AppRun script
+cat << 'EOF' > "${APP_DIR}/AppRun"
+#!/bin/sh
+HERE="$(dirname "$(readlink -f "${0}")")"
+export PATH="${HERE}/usr/bin:${PATH}"
+export LD_LIBRARY_PATH="${HERE}/lib:${HERE}/usr/lib:${LD_LIBRARY_PATH}"
+exec "${HERE}/gel_rule_app" "$@"
+EOF
+chmod +x "${APP_DIR}/AppRun"
+
+# Desktop file
+cat << 'EOF' > "${APP_DIR}/prisma.desktop"
+[Desktop Entry]
+Name=Prisma
+GenericName=Booru Client
+Comment=Prisma - Modern Booru & Art Client
+Exec=gel_rule_app %u
+Icon=prisma
+Terminal=false
+Type=Application
+Categories=Network;Graphics;
+StartupWMClass=com.example.gel_rule_app
+EOF
+
+mkdir -p "${APP_DIR}/usr/share/applications"
+cp "${APP_DIR}/prisma.desktop" "${APP_DIR}/usr/share/applications/prisma.desktop"
+
+# Icons
+ICON_SRC="${ROOT_DIR}/macos/Runner/Assets.xcassets/AppIcon.appiconset"
+if [ -d "${ICON_SRC}" ]; then
+  for size in 16 32 64 128 256 512 1024; do
+    if [ -f "${ICON_SRC}/app_icon_${size}.png" ]; then
+      mkdir -p "${APP_DIR}/usr/share/icons/hicolor/${size}x${size}/apps"
+      cp "${ICON_SRC}/app_icon_${size}.png" "${APP_DIR}/usr/share/icons/hicolor/${size}x${size}/apps/prisma.png"
+    fi
+  done
+  cp "${ICON_SRC}/app_icon_512.png" "${APP_DIR}/prisma.png"
+fi
+
+# Build AppImage
+echo "Generating AppImage with ${APPIMAGETOOL}..."
+ARCH=x86_64 "${APPIMAGETOOL}" -n "${APP_DIR}" "${OUTPUT_APPIMAGE}"
+
+echo "AppImage created successfully: ${OUTPUT_APPIMAGE}"
+ls -lh "${OUTPUT_APPIMAGE}"

lib/app/app_navigator.dart

@@ -0,0 +1,41 @@
+import 'package:flutter/material.dart';
+
+import '../backend/models/post.dart';
+import '../features/post/presentation/post_details_screen.dart';
+import '../features/post/presentation/similar_posts_screen.dart';
+
+class AppNavigator {
+  const AppNavigator._();
+
+  static void openPost(
+    BuildContext context, {
+    required Post post,
+    List<Post>? postsList,
+  }) {
+    Navigator.of(context).push(
+      MaterialPageRoute<void>(
+        builder: (ctx) => PostDetailsScreen(
+          providerId: post.providerId,
+          postId: post.id,
+          initialPost: post,
+          postsList: postsList,
+        ),
+      ),
+    );
+  }
+
+  static void openSimilarPosts(
+    BuildContext context, {
+    required Post post,
+  }) {
+    Navigator.of(context).push(
+      MaterialPageRoute<void>(
+        builder: (ctx) => SimilarPostsScreen(
+          providerId: post.providerId,
+          postId: post.id,
+          initialPost: post,
+        ),
+      ),
+    );
+  }
+}

lib/app/app_version.dart

@@ -1,3 +1,3 @@
-const appDisplayVersion = '3.5.4';
-const appBuildNumber = 80;
+const appDisplayVersion = '3.5.5';
+const appBuildNumber = 81;
 const appReleaseChannel = 'Stable';

lib/app/changelog.dart

@@ -1,4 +1,25 @@
 const prismaChangelog = [
+  PrismaChange(
+    version: '3.6.0',
+    title: 'Редизайн интерфейса для ПК и система горячих клавиш (хоткеи)',
+    bullets: [
+      'Горячие клавиши для всех вкладок: переключение разделов по Ctrl+1..8 (и Alt+1..8), циклический переход Ctrl+Tab / Ctrl+Shift+Tab, поиск Ctrl+F, обновление Ctrl+R / F5.',
+      'Хоткеи видеоплеера: пауза/воспроизведение (Space, K), плавная перемотка на 5с (←/→, J/L) и 15с (Shift+←/→) с визуальными индикаторами, регулировка громкости ↑/↓, выключение звука M, полный экран F.',
+      'Хоткеи просмотра фото и галереи: масштабирование клавишами + / - / 0 (сброс в 100%), переключение страниц и фото в постах стрелками ← / →, быстрое сохранение Ctrl+S.',
+      'Окно-шпаргалка горячих клавиш: интерактивное модальное окно со всеми клавиатурными комбинациями по нажатию ? или F1, а также из меню панели.',
+      'Редизайн боковой панели ПК: боковое меню в стиле Liquid Glass с эффектом матового стекла, логотипом Lunaris, бейджами хоткеев, закреплением панели и быстрыми действиями.',
+      'Редизайн вкладок ленты: стильный сегментированный бар выбора периодов (Все время, 24ч, Неделя, Месяц, Год) с анимированными иконками и неоновые чипы источников.',
+    ],
+  ),
+  PrismaChange(
+    version: '3.5.5',
+    title: 'Сохранение последней вкладки и состояния навигации между разделами',
+    bullets: [
+      'Сохранение последней вкладки: приложение запоминает активный раздел при выходе или закрытии и автоматически открывает его при следующем запуске.',
+      'Независимая история и сохранение места: при переключении между вкладками состояние каждого раздела полностью сохраняется. Например, если открыть публикацию или карточку у артиста и переключиться в поиск или ленту, при возврате обратно вы останетесь ровно на том же посте.',
+      'Бесшовные переходы между ветками навигации: улучшена обработка системной кнопки «Назад», переход по разделам стал еще быстрее и плавнее.',
+    ],
+  ),
   PrismaChange(
     version: '3.5.4',
     title: 'Исправление распознавания MP4-видео и отключение устаревших сервисов Kemono/Coomer',

lib/app/router.dart

@@ -21,116 +21,171 @@ import '../features/settings/presentation/settings_screen.dart';
 import '../features/viewed/presentation/viewed_screen.dart';
 import '../shared/widgets/app_shell.dart';
 
+final branchNavKeys = List.generate(8, (_) => GlobalKey<NavigatorState>());
+
 final appRouterProvider = Provider<GoRouter>((ref) {
   return GoRouter(
     initialLocation: '/',
     routes: [
-      ShellRoute(
-        builder: (context, state, child) => AppShell(child: child),
+      StatefulShellRoute.indexedStack(
+        builder: (context, state, navigationShell) => AppShell(
+          navigationShell: navigationShell,
+          child: navigationShell,
+        ),
+        branches: [
+          StatefulShellBranch(
+            navigatorKey: branchNavKeys[0],
+            routes: [
+              GoRoute(
+                path: '/',
+                pageBuilder: (context, state) => _transitionPage(
+                  state,
+                  child: FeedScreen(initialQuery: state.uri.queryParameters['q']),
+                ),
+              ),
+            ],
+          ),
+          StatefulShellBranch(
+            navigatorKey: branchNavKeys[1],
+            routes: [
+              GoRoute(
+                path: '/search',
+                builder: (context, state) => const SearchScreen(),
+              ),
+            ],
+          ),
+          StatefulShellBranch(
+            navigatorKey: branchNavKeys[2],
+            routes: [
+              GoRoute(
+                path: '/favorites',
+                builder: (context, state) => const FavoritesScreen(),
+              ),
+            ],
+          ),
+          StatefulShellBranch(
+            navigatorKey: branchNavKeys[3],
+            routes: [
+              GoRoute(
+                path: '/viewed',
+                builder: (context, state) => const ViewedScreen(),
+              ),
+            ],
+          ),
+          StatefulShellBranch(
+            navigatorKey: branchNavKeys[4],
+            routes: [
+              GoRoute(
+                path: '/collections',
+                builder: (context, state) => const CollectionsScreen(),
+                routes: [
+                  GoRoute(
+                    path: ':collectionId',
+                    builder: (context, state) => CollectionDetailsScreen(
+                      collectionId: state.pathParameters['collectionId']!,
+                    ),
+                  ),
+                ],
+              ),
+            ],
+          ),
+          StatefulShellBranch(
+            navigatorKey: branchNavKeys[5],
+            routes: [
+              GoRoute(
+                path: '/artists',
+                builder: (context, state) => const ArtistsScreen(),
+                routes: [
+                  GoRoute(
+                    path: ':providerId/:service/:artistId',
+                    builder: (context, state) => ArtistPostsScreen(
+                      providerId: state.pathParameters['providerId']!,
+                      service: state.pathParameters['service']!,
+                      artistId: state.pathParameters['artistId']!,
+                      artistName: state.uri.queryParameters['name'] ??
+                          state.pathParameters['artistId']!,
+                    ),
+                  ),
+                ],
+              ),
+            ],
+          ),
+          StatefulShellBranch(
+            navigatorKey: branchNavKeys[6],
+            routes: [
+              GoRoute(
+                path: '/providers',
+                builder: (context, state) => const ProvidersScreen(),
+                routes: [
+                  GoRoute(
+                    path: 'new',
+                    builder: (context, state) => ProviderFormScreen(
+                      initialConfig: state.extra is ContentProviderConfig
+                          ? state.extra! as ContentProviderConfig
+                          : null,
+                    ),
+                  ),
+                  GoRoute(
+                    path: 'check',
+                    builder: (context, state) => const ProviderCheckScreen(),
+                  ),
+                ],
+              ),
+            ],
+          ),
+          StatefulShellBranch(
+            navigatorKey: branchNavKeys[7],
+            routes: [
+              GoRoute(
+                path: '/settings',
+                builder: (context, state) => const SettingsScreen(),
+                routes: [
+                  GoRoute(
+                    path: 'hidden',
+                    builder: (context, state) => const HiddenPostsScreen(),
+                  ),
+                  GoRoute(
+                    path: 'cache',
+                    builder: (context, state) => const CacheManagerScreen(),
+                  ),
+                ],
+              ),
+            ],
+          ),
+        ],
+      ),
+      GoRoute(
+        path: '/post/:providerId/:postId',
+        builder: (context, state) {
+          final extra = state.extra;
+          final Post? initialPost;
+          final List<Post>? postsList;
+          if (extra is PostNavigationContext) {
+            initialPost = extra.currentPost;
+            postsList = extra.posts;
+          } else if (extra is Post) {
+            initialPost = extra;
+            postsList = null;
+          } else {
+            initialPost = null;
+            postsList = null;
+          }
+          return PostDetailsScreen(
+            providerId: state.pathParameters['providerId']!,
+            postId: state.pathParameters['postId']!,
+            initialPost: initialPost,
+            postsList: postsList,
+          );
+        },
         routes: [
           GoRoute(
-            path: '/',
-            pageBuilder: (context, state) => _transitionPage(
-              state,
-              child: FeedScreen(initialQuery: state.uri.queryParameters['q']),
-            ),
-          ),
-          GoRoute(
-            path: '/search',
-            builder: (context, state) => const SearchScreen(),
-          ),
-          GoRoute(
-            path: '/post/:providerId/:postId',
-            builder: (context, state) {
-              final extra = state.extra;
-              final Post? initialPost;
-              final List<Post>? postsList;
-              if (extra is PostNavigationContext) {
-                initialPost = extra.currentPost;
-                postsList = extra.posts;
-              } else if (extra is Post) {
-                initialPost = extra;
-                postsList = null;
-              } else {
-                initialPost = null;
-                postsList = null;
-              }
-              return PostDetailsScreen(
-                providerId: state.pathParameters['providerId']!,
-                postId: state.pathParameters['postId']!,
-                initialPost: initialPost,
-                postsList: postsList,
-              );
-            },
-          ),
-          GoRoute(
-            path: '/post/:providerId/:postId/similar',
+            path: 'similar',
             builder: (context, state) => SimilarPostsScreen(
               providerId: state.pathParameters['providerId']!,
               postId: state.pathParameters['postId']!,
               initialPost: state.extra is Post ? state.extra! as Post : null,
             ),
           ),
-          GoRoute(
-            path: '/favorites',
-            builder: (context, state) => const FavoritesScreen(),
-          ),
-          GoRoute(
-            path: '/viewed',
-            builder: (context, state) => const ViewedScreen(),
-          ),
-          GoRoute(
-            path: '/collections',
-            builder: (context, state) => const CollectionsScreen(),
-          ),
-          GoRoute(
-            path: '/collections/:collectionId',
-            builder: (context, state) => CollectionDetailsScreen(
-              collectionId: state.pathParameters['collectionId']!,
-            ),
-          ),
-          GoRoute(
-            path: '/artists',
-            builder: (context, state) => const ArtistsScreen(),
-          ),
-          GoRoute(
-            path: '/artists/:providerId/:service/:artistId',
-            builder: (context, state) => ArtistPostsScreen(
-              providerId: state.pathParameters['providerId']!,
-              service: state.pathParameters['service']!,
-              artistId: state.pathParameters['artistId']!,
-              artistName: state.uri.queryParameters['name'] ??
-                  state.pathParameters['artistId']!,
-            ),
-          ),
-          GoRoute(
-            path: '/providers',
-            builder: (context, state) => const ProvidersScreen(),
-          ),
-          GoRoute(
-            path: '/providers/new',
-            builder: (context, state) => ProviderFormScreen(
-              initialConfig: state.extra is ContentProviderConfig
-                  ? state.extra! as ContentProviderConfig
-                  : null,
-            ),
-          ),
-          GoRoute(
-            path: '/providers/check',
-            builder: (context, state) => const ProviderCheckScreen(),
-          ),
-          GoRoute(
-            path: '/settings',
-            builder: (context, state) => const SettingsScreen(),
-          ),
-          GoRoute(
-            path: '/settings/hidden',
-            builder: (context, state) => const HiddenPostsScreen(),
-          ),
-          GoRoute(
-            path: '/settings/cache',
-            builder: (context, state) => const CacheManagerScreen(),
-          ),
         ],
       ),
     ],

lib/backend/services/settings_service.dart

@@ -64,8 +64,10 @@ class AppSettings {
     this.downloadPathTemplate = '{Artist}/{ID}',
     this.searchHistoryLimit = 500,
     this.tagCacheLimit = 5000,
+    this.lastActiveLocation = '/',
   });
 
+  final String lastActiveLocation;
   final List<String> favoriteArtists;
   final List<String> pawchiveAccounts;
   final bool pawchiveBidirectionalSync;
@@ -165,6 +167,7 @@ class AppSettings {
     lastFeedRating: null,
     searchHistoryLimit: 500,
     tagCacheLimit: 5000,
+    lastActiveLocation: '/',
   );
 
   AppSettings copyWith({
@@ -220,8 +223,10 @@ class AppSettings {
     String? downloadPathTemplate,
     int? searchHistoryLimit,
     int? tagCacheLimit,
+    String? lastActiveLocation,
   }) {
     return AppSettings(
+      lastActiveLocation: lastActiveLocation ?? this.lastActiveLocation,
       favoriteArtists: favoriteArtists ?? this.favoriteArtists,
       pawchiveAccounts: pawchiveAccounts ?? this.pawchiveAccounts,
       pawchiveBidirectionalSync:
@@ -336,6 +341,7 @@ class AppSettings {
         'downloadPathTemplate': downloadPathTemplate,
         'searchHistoryLimit': searchHistoryLimit,
         'tagCacheLimit': tagCacheLimit,
+        'lastActiveLocation': lastActiveLocation,
       };
 
   factory AppSettings.fromJson(Map<String, dynamic> json) => AppSettings(
@@ -455,6 +461,8 @@ class AppSettings {
             defaults.searchHistoryLimit,
         tagCacheLimit: (json['tagCacheLimit'] as num?)?.toInt() ??
             defaults.tagCacheLimit,
+        lastActiveLocation: (json['lastActiveLocation'] as String?) ??
+            defaults.lastActiveLocation,
       );
 
   List<PawchiveAccount> get parsedPawchiveAccounts {
@@ -545,6 +553,14 @@ class SettingsService {
     return updateSettings(settings.copyWith(nsfwEnabled: enabled));
   }
 
+  Future<Result<void>> saveLastActiveLocation(String location) async {
+    final result = await getSettings();
+    if (result is Error<AppSettings>) return Error(result.failure);
+    final settings = (result as Success<AppSettings>).data;
+    if (settings.lastActiveLocation == location) return const Success(null);
+    return updateSettings(settings.copyWith(lastActiveLocation: location));
+  }
+
   Future<Result<void>> saveCacheSettings({
     required int ttlHours,
     required int maxItems,

lib/features/artists/presentation/artist_posts_screen.dart

@@ -3,10 +3,10 @@ import 'dart:convert';
 import 'package:flutter/material.dart';
 import 'package:flutter/services.dart';
 import 'package:flutter_riverpod/flutter_riverpod.dart';
-import 'package:go_router/go_router.dart';
 import 'package:url_launcher/url_launcher.dart';
 
 import '../../../app/app.dart';
+import '../../../app/app_navigator.dart';
 import '../../../app/responsive.dart';
 import '../../../backend/backend.dart';
 import '../../../core/utils/result.dart';
@@ -791,12 +791,10 @@ class _ArtistPostsScreenState extends ConsumerState<ArtistPostsScreen> {
                                       settings.mediaQualityMode),
                                   favoriteKeys: favoriteKeys,
                                   viewedKeys: viewedKeys,
-                                  onOpen: (post) => context.push(
-                                    '/post/${post.providerId}/${post.id}',
-                                    extra: PostNavigationContext(
-                                      currentPost: post,
-                                      posts: displayedPosts,
-                                    ),
+                                  onOpen: (post) => AppNavigator.openPost(
+                                    context,
+                                    post: post,
+                                    postsList: displayedPosts,
                                   ),
                                   onFavorite: (post) async {
                                     if (favoriteKeys.contains(post.cacheKey)) {

lib/features/artists/presentation/artists_screen.dart

@@ -7,6 +7,7 @@ import 'package:flutter_riverpod/flutter_riverpod.dart';
 import 'package:go_router/go_router.dart';
 
 import '../../../app/app.dart';
+import '../../../app/app_navigator.dart';
 import '../../../app/responsive.dart';
 import '../../../backend/backend.dart';
 import '../../../core/utils/result.dart';
@@ -1574,12 +1575,10 @@ class _FavoriteArtistMediaStrip extends ConsumerWidget {
                 final isVideo = MediaUrlSelector.isVideo(post);
                 return InkWell(
                   borderRadius: BorderRadius.circular(14),
-                  onTap: () => context.push(
-                    '/post/${post.providerId}/${post.id}',
-                    extra: PostNavigationContext(
-                      currentPost: post,
-                      posts: posts,
-                    ),
+                  onTap: () => AppNavigator.openPost(
+                    context,
+                    post: post,
+                    postsList: posts,
                   ),
                   child: Container(
                     decoration: BoxDecoration(

lib/features/collections/presentation/collection_details_screen.dart

@@ -3,6 +3,7 @@ import 'package:flutter_riverpod/flutter_riverpod.dart';
 import 'package:go_router/go_router.dart';
 
 import '../../../app/app.dart';
+import '../../../app/app_navigator.dart';
 import '../../../app/responsive.dart';
 import '../../../backend/backend.dart';
 import '../../../shared/widgets/adaptive_scaffold.dart';
@@ -167,12 +168,10 @@ class CollectionDetailsScreen extends ConsumerWidget {
                   mediaQualityMode:
                       MediaQualityMode.fromName(settings.mediaQualityMode),
                   favoriteKeys: favoriteKeys,
-                  onOpen: (post) => context.push(
-                    '/post/${post.providerId}/${post.id}',
-                    extra: PostNavigationContext(
-                      currentPost: post,
-                      posts: items,
-                    ),
+                  onOpen: (post) => AppNavigator.openPost(
+                    context,
+                    post: post,
+                    postsList: items,
                   ),
                   onFavorite: (post) async {
                     if (favoriteKeys.contains(post.cacheKey)) {

lib/features/favorites/presentation/favorites_screen.dart

@@ -7,6 +7,7 @@ import 'package:flutter_riverpod/flutter_riverpod.dart';
 import 'package:go_router/go_router.dart';
 
 import '../../../app/app.dart';
+import '../../../app/app_navigator.dart';
 import '../../../app/responsive.dart';
 import '../../../backend/backend.dart';
 import '../../../shared/widgets/adaptive_scaffold.dart';
@@ -970,12 +971,10 @@ class _FavoritesScreenState extends ConsumerState<FavoritesScreen> {
       mediaQualityMode: MediaQualityMode.fromName(settings.mediaQualityMode),
       favoriteKeys: posts.map((post) => post.cacheKey).toSet(),
       downloadedKeys: downloadedKeys,
-      onOpen: (post) => context.push(
-        '/post/${post.providerId}/${post.id}',
-        extra: PostNavigationContext(
-          currentPost: post,
-          posts: posts,
-        ),
+      onOpen: (post) => AppNavigator.openPost(
+        context,
+        post: post,
+        postsList: posts,
       ),
       onFavorite: (post) =>
           ref.read(favoritesControllerProvider.notifier).remove(post),

lib/features/feed/presentation/feed_screen.dart

@@ -8,6 +8,7 @@ import 'dart:async';
 import 'package:cached_network_image/cached_network_image.dart';
 
 import '../../../app/app.dart';
+import '../../../app/app_navigator.dart';
 import '../../../app/responsive.dart';
 import '../../../backend/backend.dart';
 import '../../../core/utils/result.dart';
@@ -143,7 +144,11 @@ class _FeedScreenState extends ConsumerState<FeedScreen>
 
     return Shortcuts(
       shortcuts: {
-        LogicalKeySet(LogicalKeyboardKey.keyR): const _RefreshIntent(),
+        LogicalKeySet(LogicalKeyboardKey.keyR): const _RandomPostIntent(),
+        LogicalKeySet(LogicalKeyboardKey.control, LogicalKeyboardKey.keyR):
+            const _RefreshIntent(),
+        LogicalKeySet(LogicalKeyboardKey.f5): const _RefreshIntent(),
+        LogicalKeySet(LogicalKeyboardKey.keyV): const _ToggleSelectionIntent(),
         LogicalKeySet(LogicalKeyboardKey.escape): const _ClearSelectionIntent(),
         LogicalKeySet(LogicalKeyboardKey.delete): const _ClearSelectionIntent(),
         LogicalKeySet(LogicalKeyboardKey.control, LogicalKeyboardKey.keyA):
@@ -157,6 +162,24 @@ class _FeedScreenState extends ConsumerState<FeedScreen>
               return null;
             },
           ),
+          _RandomPostIntent: CallbackAction<_RandomPostIntent>(
+            onInvoke: (_) {
+              final posts = feed.value?.posts;
+              if (posts != null && posts.isNotEmpty) {
+                _openRandom(posts);
+              }
+              return null;
+            },
+          ),
+          _ToggleSelectionIntent: CallbackAction<_ToggleSelectionIntent>(
+            onInvoke: (_) {
+              setState(() {
+                _selectionMode = !_selectionMode;
+                if (!_selectionMode) _selectedKeys.clear();
+              });
+              return null;
+            },
+          ),
           _ClearSelectionIntent: CallbackAction<_ClearSelectionIntent>(
             onInvoke: (_) {
               _clearSelection();
@@ -331,12 +354,10 @@ class _FeedScreenState extends ConsumerState<FeedScreen>
                             selectionMode: _selectionMode,
                             selectedKeys: _selectedKeys,
                             gridMode: settings.gridMode,
-                            onOpen: (post) => context.push(
-                              '/post/${post.providerId}/${post.id}',
-                              extra: PostNavigationContext(
-                                currentPost: post,
-                                posts: state.posts,
-                              ),
+                            onOpen: (post) => AppNavigator.openPost(
+                              context,
+                              post: post,
+                              postsList: state.posts,
                             ),
                             onPreview: (post) => _showPreview(context, post),
                             onToggleSelected: (post) => _toggleSelected(post),
@@ -392,7 +413,7 @@ class _FeedScreenState extends ConsumerState<FeedScreen>
   void _openRandom(List<Post> posts) {
     if (posts.isEmpty) return;
     final post = posts[Random().nextInt(posts.length)];
-    context.push('/post/${post.providerId}/${post.id}', extra: post);
+    AppNavigator.openPost(context, post: post, postsList: posts);
   }
 
   Future<void> _applySearchQuery(String query) async {
@@ -683,6 +704,14 @@ class _SelectVisibleIntent extends Intent {
   const _SelectVisibleIntent();
 }
 
+class _RandomPostIntent extends Intent {
+  const _RandomPostIntent();
+}
+
+class _ToggleSelectionIntent extends Intent {
+  const _ToggleSelectionIntent();
+}
+
 class _BatchActionBar extends StatelessWidget {
   const _BatchActionBar({
     required this.count,

lib/features/feed/presentation/widgets/feed_toolbar.dart

@@ -110,7 +110,7 @@ class _FeedToolbarState extends State<FeedToolbar> {
               ),
               const SizedBox(width: 8),
               IconButton.filledTonal(
-                tooltip: widget.selectionMode ? 'Выйти из выбора' : 'Выбрать посты',
+                tooltip: widget.selectionMode ? 'Выйти из выбора (Esc)' : 'Выбрать посты (V)',
                 onPressed: widget.onToggleSelectionMode,
                 icon: Icon(widget.selectionMode
                     ? Icons.check_box_rounded
@@ -139,13 +139,13 @@ class _FeedToolbarState extends State<FeedToolbar> {
               ),
               const SizedBox(width: 4),
               IconButton(
-                tooltip: 'Обновить',
+                tooltip: 'Обновить (Ctrl+R / F5)',
                 onPressed: widget.onRefresh,
                 icon: const Icon(Icons.refresh_rounded),
               ),
               const SizedBox(width: 4),
               IconButton.filledTonal(
-                tooltip: 'Случайный пост',
+                tooltip: 'Случайный пост (R)',
                 onPressed: widget.onRandom,
                 icon: const Icon(Icons.casino_rounded),
               ),
@@ -163,41 +163,36 @@ class _FeedToolbarState extends State<FeedToolbar> {
             const SizedBox(height: 8),
           ],
           _HorizontalWheelScroller(
-            height: 36,
+            height: 38,
             builder: (controller) => ListView(
               controller: controller,
               scrollDirection: Axis.horizontal,
               primary: false,
               children: [
+                _LiquidPeriodTabs(
+                  selectedPeriod: widget.topPeriodFilter,
+                  onChanged: widget.onTopPeriodChanged,
+                ),
+                const SizedBox(width: 8),
+                const _ToolbarDivider(),
+                const SizedBox(width: 8),
                 if (widget.providers.isNotEmpty) ...[
-                  FilterChip(
-                    selected: widget.selectedProviderIds.isEmpty,
-                    label: const Text('Все источники'),
-                    onSelected: (_) => widget.onQuickProviderToggle('__all__'),
+                  _LiquidProviderPill(
+                    label: 'Все источники',
+                    isSelected: widget.selectedProviderIds.isEmpty,
+                    icon: Icons.all_inclusive_rounded,
+                    onTap: () => widget.onQuickProviderToggle('__all__'),
                   ),
-                  const SizedBox(width: 8),
+                  const SizedBox(width: 6),
                   for (final provider in widget.providers) ...[
-                    FilterChip(
-                      selected:
-                          widget.selectedProviderIds.contains(provider.id),
-                      avatar: const Icon(Icons.hub_rounded, size: 15),
-                      label: Text(provider.name),
-                      onSelected: (_) =>
-                          widget.onQuickProviderToggle(provider.id),
+                    _LiquidProviderPill(
+                      label: provider.name,
+                      isSelected: widget.selectedProviderIds.contains(provider.id),
+                      icon: Icons.hub_rounded,
+                      onTap: () => widget.onQuickProviderToggle(provider.id),
                     ),
-                    const SizedBox(width: 8),
+                    const SizedBox(width: 6),
                   ],
-                  const SizedBox(width: 4),
-                  const _ToolbarDivider(),
-                  const SizedBox(width: 10),
-                ],
-                for (final period in TopPeriodFilter.values) ...[
-                  ChoiceChip(
-                    selected: widget.topPeriodFilter == period,
-                    label: Text(period.label),
-                    onSelected: (_) => widget.onTopPeriodChanged(period),
-                  ),
-                  const SizedBox(width: 8),
                 ],
               ],
             ),
@@ -289,64 +284,56 @@ class _FeedToolbarState extends State<FeedToolbar> {
               primary: false,
               children: [
                 if (hasActiveFilters || widget.selectedTags.isNotEmpty) ...[
-                  ActionChip(
-                    visualDensity: VisualDensity.compact,
-                    avatar: const Icon(Icons.filter_alt_off_rounded, size: 15),
-                    label: const Text('Сбросить'),
-                    onPressed: widget.onClearFilters,
+                  _LiquidProviderPill(
+                    label: 'Сбросить',
+                    isSelected: false,
+                    icon: Icons.filter_alt_off_rounded,
+                    onTap: widget.onClearFilters,
                   ),
                   const SizedBox(width: 6),
                 ],
-                ActionChip(
-                  visualDensity: VisualDensity.compact,
-                  avatar: const Icon(Icons.refresh_rounded, size: 15),
-                  label: const Text('Обновить'),
-                  onPressed: widget.onRefresh,
+                _LiquidProviderPill(
+                  label: 'Обновить',
+                  isSelected: false,
+                  icon: Icons.refresh_rounded,
+                  onTap: widget.onRefresh,
                 ),
                 const SizedBox(width: 6),
                 const _ToolbarDivider(),
                 const SizedBox(width: 6),
-                FilterChip(
-                  visualDensity: VisualDensity.compact,
-                  selected: widget.rating != null,
-                  avatar: const Icon(Icons.shield_outlined, size: 15),
-                  label: Text(widget.rating ?? 'Рейтинг'),
-                  onSelected: (_) => widget.onRatingFilter(),
+                _LiquidProviderPill(
+                  label: widget.rating ?? 'Рейтинг',
+                  isSelected: widget.rating != null,
+                  icon: Icons.shield_outlined,
+                  onTap: widget.onRatingFilter,
                 ),
                 const SizedBox(width: 6),
                 const _ToolbarDivider(),
                 const SizedBox(width: 6),
+                _LiquidPeriodTabs(
+                  selectedPeriod: widget.topPeriodFilter,
+                  onChanged: widget.onTopPeriodChanged,
+                ),
                 if (widget.providers.isNotEmpty) ...[
-                  FilterChip(
-                    visualDensity: VisualDensity.compact,
-                    selected: widget.selectedProviderIds.isEmpty,
-                    label: const Text('Все'),
-                    onSelected: (_) => widget.onQuickProviderToggle('__all__'),
+                  const SizedBox(width: 6),
+                  const _ToolbarDivider(),
+                  const SizedBox(width: 6),
+                  _LiquidProviderPill(
+                    label: 'Все',
+                    isSelected: widget.selectedProviderIds.isEmpty,
+                    icon: Icons.all_inclusive_rounded,
+                    onTap: () => widget.onQuickProviderToggle('__all__'),
                   ),
                   const SizedBox(width: 6),
                   for (final provider in widget.providers) ...[
-                    FilterChip(
-                      visualDensity: VisualDensity.compact,
-                      selected:
-                          widget.selectedProviderIds.contains(provider.id),
-                      label: Text(provider.name),
-                      onSelected: (_) =>
-                          widget.onQuickProviderToggle(provider.id),
+                    _LiquidProviderPill(
+                      label: provider.name,
+                      isSelected: widget.selectedProviderIds.contains(provider.id),
+                      icon: Icons.hub_rounded,
+                      onTap: () => widget.onQuickProviderToggle(provider.id),
                     ),
                     const SizedBox(width: 6),
                   ],
-                  const SizedBox(width: 2),
-                  const _ToolbarDivider(),
-                  const SizedBox(width: 6),
-                ],
-                for (final period in TopPeriodFilter.values) ...[
-                  ChoiceChip(
-                    visualDensity: VisualDensity.compact,
-                    selected: widget.topPeriodFilter == period,
-                    label: Text(period.label),
-                    onSelected: (_) => widget.onTopPeriodChanged(period),
-                  ),
-                  const SizedBox(width: 6),
                 ],
               ],
             ),
@@ -371,6 +358,227 @@ class _ToolbarDivider extends StatelessWidget {
   }
 }
 
+class _LiquidPeriodTabs extends StatelessWidget {
+  const _LiquidPeriodTabs({
+    required this.selectedPeriod,
+    required this.onChanged,
+  });
+
+  final TopPeriodFilter selectedPeriod;
+  final ValueChanged<TopPeriodFilter> onChanged;
+
+  IconData _iconFor(TopPeriodFilter period) {
+    return switch (period) {
+      TopPeriodFilter.none => Icons.auto_awesome_rounded,
+      TopPeriodFilter.month => Icons.calendar_month_rounded,
+      TopPeriodFilter.year => Icons.calendar_today_rounded,
+      TopPeriodFilter.allTime => Icons.workspace_premium_rounded,
+    };
+  }
+
+  @override
+  Widget build(BuildContext context) {
+    final theme = Theme.of(context);
+    final scheme = theme.colorScheme;
+    final isDark = theme.brightness == Brightness.dark;
+
+    return Container(
+      padding: const EdgeInsets.all(2.5),
+      decoration: BoxDecoration(
+        color: isDark
+            ? scheme.surfaceContainerHigh.withValues(alpha: 0.55)
+            : scheme.surfaceContainerHighest.withValues(alpha: 0.45),
+        borderRadius: BorderRadius.circular(16),
+        border: Border.all(
+          color: isDark
+              ? Colors.white.withValues(alpha: 0.1)
+              : Colors.black.withValues(alpha: 0.06),
+          width: 1,
+        ),
+      ),
+      child: Row(
+        mainAxisSize: MainAxisSize.min,
+        children: [
+          for (final period in TopPeriodFilter.values) ...[
+            _LiquidPeriodTabItem(
+              period: period,
+              icon: _iconFor(period),
+              isSelected: selectedPeriod == period,
+              onTap: () => onChanged(period),
+            ),
+            if (period != TopPeriodFilter.values.last) const SizedBox(width: 3),
+          ],
+        ],
+      ),
+    );
+  }
+}
+
+class _LiquidPeriodTabItem extends StatelessWidget {
+  const _LiquidPeriodTabItem({
+    required this.period,
+    required this.icon,
+    required this.isSelected,
+    required this.onTap,
+  });
+
+  final TopPeriodFilter period;
+  final IconData icon;
+  final bool isSelected;
+  final VoidCallback onTap;
+
+  @override
+  Widget build(BuildContext context) {
+    final theme = Theme.of(context);
+    final scheme = theme.colorScheme;
+    final isDark = theme.brightness == Brightness.dark;
+
+    return Material(
+      color: Colors.transparent,
+      child: InkWell(
+        onTap: onTap,
+        borderRadius: BorderRadius.circular(13),
+        child: AnimatedContainer(
+          duration: const Duration(milliseconds: 200),
+          curve: Curves.easeOutCubic,
+          padding: const EdgeInsets.symmetric(horizontal: 10, vertical: 5),
+          decoration: BoxDecoration(
+            color: isSelected
+                ? (isDark
+                    ? scheme.primary.withValues(alpha: 0.28)
+                    : scheme.primaryContainer.withValues(alpha: 0.85))
+                : Colors.transparent,
+            borderRadius: BorderRadius.circular(13),
+            border: isSelected
+                ? Border.all(
+                    color: scheme.primary.withValues(alpha: isDark ? 0.45 : 0.3),
+                    width: 1,
+                  )
+                : null,
+            boxShadow: isSelected
+                ? [
+                    BoxShadow(
+                      color: scheme.primary.withValues(alpha: isDark ? 0.25 : 0.12),
+                      blurRadius: 8,
+                      offset: const Offset(0, 2),
+                    ),
+                  ]
+                : null,
+          ),
+          child: Row(
+            mainAxisSize: MainAxisSize.min,
+            children: [
+              Icon(
+                icon,
+                size: 14,
+                color: isSelected
+                    ? (isDark ? scheme.primary : scheme.onPrimaryContainer)
+                    : scheme.onSurfaceVariant.withValues(alpha: 0.85),
+              ),
+              const SizedBox(width: 6),
+              Text(
+                period.label,
+                style: TextStyle(
+                  fontSize: 12,
+                  fontWeight: isSelected ? FontWeight.w700 : FontWeight.w500,
+                  color: isSelected
+                      ? (isDark ? scheme.primary : scheme.onPrimaryContainer)
+                      : scheme.onSurfaceVariant,
+                ),
+              ),
+            ],
+          ),
+        ),
+      ),
+    );
+  }
+}
+
+class _LiquidProviderPill extends StatelessWidget {
+  const _LiquidProviderPill({
+    required this.label,
+    required this.isSelected,
+    required this.onTap,
+    this.icon,
+  });
+
+  final String label;
+  final bool isSelected;
+  final VoidCallback onTap;
+  final IconData? icon;
+
+  @override
+  Widget build(BuildContext context) {
+    final theme = Theme.of(context);
+    final scheme = theme.colorScheme;
+    final isDark = theme.brightness == Brightness.dark;
+
+    return Material(
+      color: Colors.transparent,
+      child: InkWell(
+        onTap: onTap,
+        borderRadius: BorderRadius.circular(14),
+        child: AnimatedContainer(
+          duration: const Duration(milliseconds: 200),
+          curve: Curves.easeOutCubic,
+          padding: const EdgeInsets.symmetric(horizontal: 10, vertical: 5),
+          decoration: BoxDecoration(
+            color: isSelected
+                ? (isDark
+                    ? scheme.secondaryContainer.withValues(alpha: 0.35)
+                    : scheme.secondaryContainer.withValues(alpha: 0.7))
+                : (isDark
+                    ? scheme.surfaceContainerHigh.withValues(alpha: 0.4)
+                    : scheme.surfaceContainerHighest.withValues(alpha: 0.35)),
+            borderRadius: BorderRadius.circular(14),
+            border: Border.all(
+              color: isSelected
+                  ? scheme.secondary.withValues(alpha: isDark ? 0.6 : 0.4)
+                  : (isDark
+                      ? Colors.white.withValues(alpha: 0.08)
+                      : Colors.black.withValues(alpha: 0.05)),
+              width: 1,
+            ),
+            boxShadow: isSelected
+                ? [
+                    BoxShadow(
+                      color: scheme.secondary.withValues(alpha: isDark ? 0.2 : 0.08),
+                      blurRadius: 6,
+                    ),
+                  ]
+                : null,
+          ),
+          child: Row(
+            mainAxisSize: MainAxisSize.min,
+            children: [
+              if (icon != null) ...[
+                Icon(
+                  icon,
+                  size: 14,
+                  color: isSelected
+                      ? (isDark ? scheme.secondary : scheme.onSecondaryContainer)
+                      : scheme.onSurfaceVariant.withValues(alpha: 0.8),
+                ),
+                const SizedBox(width: 5),
+              ],
+              Text(
+                label,
+                style: TextStyle(
+                  fontSize: 12,
+                  fontWeight: isSelected ? FontWeight.w700 : FontWeight.w500,
+                  color: isSelected
+                      ? (isDark ? scheme.secondary : scheme.onSecondaryContainer)
+                      : scheme.onSurfaceVariant,
+                ),
+              ),
+            ],
+          ),
+        ),
+      ),
+    );
+  }
+}
+
 class _HorizontalWheelScroller extends StatefulWidget {
   const _HorizontalWheelScroller({
     required this.builder,

lib/features/post/presentation/post_details_screen.dart

@@ -8,6 +8,7 @@ import 'package:share_plus/share_plus.dart';
 import 'package:url_launcher/url_launcher.dart';
 
 import '../../../app/app.dart';
+import '../../../app/app_navigator.dart';
 import '../../../app/app_strings.dart';
 import '../../../app/motion.dart';
 import '../../../app/responsive.dart';
@@ -171,6 +172,8 @@ class PostDetailsScreen extends ConsumerWidget {
               LogicalKeySet(LogicalKeyboardKey.keyC):
                   const _AddCollectionIntent(),
               LogicalKeySet(LogicalKeyboardKey.keyS): const _DownloadIntent(),
+              LogicalKeySet(LogicalKeyboardKey.control, LogicalKeyboardKey.keyS):
+                  const _DownloadIntent(),
               LogicalKeySet(LogicalKeyboardKey.escape): const _CloseIntent(),
             },
             child: Actions(
@@ -872,7 +875,7 @@ class PostDetailsScreen extends ConsumerWidget {
   }
 
   void _openSimilar(BuildContext context, WidgetRef ref, Post post) {
-    context.push('/post/${post.providerId}/${post.id}/similar', extra: post);
+    AppNavigator.openSimilarPosts(context, post: post);
   }
 
   Future<void> _openSourcePage(WidgetRef ref, Post post) async {
@@ -888,7 +891,16 @@ class PostDetailsScreen extends ConsumerWidget {
   }
 
   void _replacePost(BuildContext context, Post post) {
-    context.replace('/post/${post.providerId}/${post.id}', extra: post);
+    Navigator.of(context).pushReplacement(
+      MaterialPageRoute<void>(
+        builder: (ctx) => PostDetailsScreen(
+          providerId: post.providerId,
+          postId: post.id,
+          initialPost: post,
+          postsList: postsList,
+        ),
+      ),
+    );
   }
 
   void _close(BuildContext context) {

lib/features/post/presentation/similar_posts_screen.dart

@@ -1,8 +1,8 @@
 import 'package:flutter/material.dart';
 import 'package:flutter_riverpod/flutter_riverpod.dart';
-import 'package:go_router/go_router.dart';
 
 import '../../../app/app.dart';
+import '../../../app/app_navigator.dart';
 import '../../../app/responsive.dart';
 import '../../../backend/backend.dart';
 import '../../../core/utils/result.dart';
@@ -98,9 +98,9 @@ class SimilarPostsScreen extends ConsumerWidget {
                           MediaQualityMode.fromName(settings.mediaQualityMode),
                       favoriteKeys: favorites,
                       viewedKeys: viewed,
-                      onOpen: (post) => context.push(
-                        '/post/${post.providerId}/${post.id}',
-                        extra: post,
+                      onOpen: (post) => AppNavigator.openPost(
+                        context,
+                        post: post,
                       ),
                       onFavorite: (post) =>
                           _toggleFavorite(ref, post, favorites),

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

@@ -383,16 +383,54 @@ class _PostMediaViewerState extends State<PostMediaViewer>
           ),
       ],
     );
+
+    final interactiveChild = _imageUrls.length > 1
+        ? Shortcuts(
+            shortcuts: {
+              LogicalKeySet(LogicalKeyboardKey.arrowLeft):
+                  const _PrevImageIntent(),
+              LogicalKeySet(LogicalKeyboardKey.keyA): const _PrevImageIntent(),
+              LogicalKeySet(LogicalKeyboardKey.arrowRight):
+                  const _NextImageIntent(),
+              LogicalKeySet(LogicalKeyboardKey.keyD): const _NextImageIntent(),
+            },
+            child: Actions(
+              actions: {
+                _PrevImageIntent: CallbackAction<_PrevImageIntent>(
+                  onInvoke: (_) {
+                    if (_imageIndex > 0) {
+                      setState(() => _imageIndex--);
+                    }
+                    return null;
+                  },
+                ),
+                _NextImageIntent: CallbackAction<_NextImageIntent>(
+                  onInvoke: (_) {
+                    if (_imageIndex < _imageUrls.length - 1) {
+                      setState(() => _imageIndex++);
+                    }
+                    return null;
+                  },
+                ),
+              },
+              child: Focus(
+                autofocus: true,
+                child: child,
+              ),
+            ),
+          )
+        : child;
+
     return LayoutBuilder(
       builder: (context, constraints) {
         if (constraints.hasBoundedWidth && constraints.hasBoundedHeight) {
           return SizedBox(
             width: constraints.maxWidth,
             height: constraints.maxHeight,
-            child: child,
+            child: interactiveChild,
           );
         }
-        return child;
+        return interactiveChild;
       },
     );
   }
@@ -739,6 +777,48 @@ class _TogglePlayIntent extends Intent {
   const _TogglePlayIntent();
 }
 
+class _SeekVideoIntent extends Intent {
+  const _SeekVideoIntent(this.seconds);
+  final int seconds;
+}
+
+class _VolumeVideoIntent extends Intent {
+  const _VolumeVideoIntent(this.deltaY);
+  final double deltaY;
+}
+
+class _MuteVideoIntent extends Intent {
+  const _MuteVideoIntent();
+}
+
+class _FullscreenVideoIntent extends Intent {
+  const _FullscreenVideoIntent();
+}
+
+class _LoopVideoIntent extends Intent {
+  const _LoopVideoIntent();
+}
+
+class _ZoomInIntent extends Intent {
+  const _ZoomInIntent();
+}
+
+class _ZoomOutIntent extends Intent {
+  const _ZoomOutIntent();
+}
+
+class _ResetZoomIntent extends Intent {
+  const _ResetZoomIntent();
+}
+
+class _PrevImageIntent extends Intent {
+  const _PrevImageIntent();
+}
+
+class _NextImageIntent extends Intent {
+  const _NextImageIntent();
+}
+
 class _UnsupportedSwfPanel extends StatelessWidget {
   const _UnsupportedSwfPanel();
 
@@ -911,6 +991,8 @@ class _FullscreenVideoPageState extends State<_FullscreenVideoPage> {
           shortcuts: {
             LogicalKeySet(LogicalKeyboardKey.escape): const _CloseVideoIntent(),
             LogicalKeySet(LogicalKeyboardKey.space): const _TogglePlayIntent(),
+            LogicalKeySet(LogicalKeyboardKey.keyK): const _TogglePlayIntent(),
+            LogicalKeySet(LogicalKeyboardKey.keyF): const _CloseVideoIntent(),
           },
           child: Actions(
             actions: {
@@ -1771,16 +1853,87 @@ class _VideoSurfaceState extends State<_VideoSurface> {
       },
     );
 
-    return MouseRegion(
-      onHover: (_) => widget.onInteract(),
-      child: ClipRRect(
-        borderRadius: BorderRadius.circular(widget.fullscreen ? 0 : 10),
-        child: widget.fullscreen
-            ? SizedBox.expand(child: child)
-            : AspectRatio(
-                aspectRatio: widget.aspectRatio.clamp(0.35, 2.4),
-                child: child,
-              ),
+    return Shortcuts(
+      shortcuts: {
+        LogicalKeySet(LogicalKeyboardKey.space): const _TogglePlayIntent(),
+        LogicalKeySet(LogicalKeyboardKey.keyK): const _TogglePlayIntent(),
+        LogicalKeySet(LogicalKeyboardKey.arrowLeft): const _SeekVideoIntent(-5),
+        LogicalKeySet(LogicalKeyboardKey.keyJ): const _SeekVideoIntent(-5),
+        LogicalKeySet(LogicalKeyboardKey.arrowRight): const _SeekVideoIntent(5),
+        LogicalKeySet(LogicalKeyboardKey.keyL): const _SeekVideoIntent(5),
+        LogicalKeySet(LogicalKeyboardKey.shift, LogicalKeyboardKey.arrowLeft):
+            const _SeekVideoIntent(-15),
+        LogicalKeySet(LogicalKeyboardKey.shift, LogicalKeyboardKey.arrowRight):
+            const _SeekVideoIntent(15),
+        LogicalKeySet(LogicalKeyboardKey.arrowUp): const _VolumeVideoIntent(-10),
+        LogicalKeySet(LogicalKeyboardKey.arrowDown): const _VolumeVideoIntent(10),
+        LogicalKeySet(LogicalKeyboardKey.keyM): const _MuteVideoIntent(),
+        LogicalKeySet(LogicalKeyboardKey.keyF): const _FullscreenVideoIntent(),
+        LogicalKeySet(LogicalKeyboardKey.control, LogicalKeyboardKey.keyL):
+            const _LoopVideoIntent(),
+      },
+      child: Actions(
+        actions: {
+          _TogglePlayIntent: CallbackAction<_TogglePlayIntent>(
+            onInvoke: (_) {
+              if (widget.player.state.playing) {
+                widget.player.pause();
+              } else {
+                if (widget.player.state.completed) {
+                  widget.player.seek(Duration.zero);
+                }
+                widget.player.play();
+              }
+              widget.onInteract();
+              return null;
+            },
+          ),
+          _SeekVideoIntent: CallbackAction<_SeekVideoIntent>(
+            onInvoke: (intent) {
+              _seekBy(Duration(seconds: intent.seconds));
+              return null;
+            },
+          ),
+          _VolumeVideoIntent: CallbackAction<_VolumeVideoIntent>(
+            onInvoke: (intent) {
+              _adjustVolume(intent.deltaY);
+              return null;
+            },
+          ),
+          _MuteVideoIntent: CallbackAction<_MuteVideoIntent>(
+            onInvoke: (_) {
+              widget.onToggleMute();
+              return null;
+            },
+          ),
+          _FullscreenVideoIntent: CallbackAction<_FullscreenVideoIntent>(
+            onInvoke: (_) {
+              widget.onFullscreen();
+              return null;
+            },
+          ),
+          _LoopVideoIntent: CallbackAction<_LoopVideoIntent>(
+            onInvoke: (_) {
+              widget.onToggleLoop();
+              return null;
+            },
+          ),
+        },
+        child: Focus(
+          autofocus: true,
+          child: MouseRegion(
+            onHover: (_) => widget.onInteract(),
+            child: ClipRRect(
+              borderRadius: BorderRadius.circular(widget.fullscreen ? 0 : 10),
+              child: widget.fullscreen
+                  ? SizedBox.expand(child: child)
+                  : AspectRatio(
+                      aspectRatio: widget.aspectRatio.clamp(0.35, 2.4),
+                      child: child,
+                    ),
+            ),
+          ),
+        ),
       ),
     );
   }
@@ -1959,80 +2112,147 @@ class _ZoomableImageState extends State<_ZoomableImage> {
     super.dispose();
   }
 
+  void _zoomIn() {
+    final currentScale = _controller.value.getMaxScaleOnAxis();
+    final newScale = (currentScale * 1.35).clamp(1.0, 6.0);
+    _controller.value = Matrix4.identity()..scaleByDouble(newScale, newScale, 1, 1);
+    if (mounted) setState(() => _zoomed = newScale > 1.02);
+    _setLocked(_zoomed);
+  }
+
+  void _zoomOut() {
+    final currentScale = _controller.value.getMaxScaleOnAxis();
+    final newScale = (currentScale / 1.35).clamp(1.0, 6.0);
+    if (newScale <= 1.02) {
+      _controller.value = Matrix4.identity();
+      if (mounted) setState(() => _zoomed = false);
+      _setLocked(false);
+    } else {
+      _controller.value = Matrix4.identity()..scaleByDouble(newScale, newScale, 1, 1);
+      if (mounted) setState(() => _zoomed = true);
+      _setLocked(true);
+    }
+  }
+
+  void _resetZoom() {
+    _controller.value = Matrix4.identity();
+    if (mounted) setState(() => _zoomed = false);
+    _setLocked(false);
+  }
+
   @override
   Widget build(BuildContext context) {
-    return LayoutBuilder(
-      builder: (context, constraints) {
-        final hasFrame =
-            constraints.hasBoundedWidth && constraints.hasBoundedHeight;
-        final child = hasFrame
-            ? SizedBox(
-                width: constraints.maxWidth,
-                height: constraints.maxHeight,
-                child: widget.child,
-              )
-            : widget.child;
-        return Listener(
-          onPointerSignal: (signal) {
-            if (signal is PointerScrollEvent) {
-              final scaleDelta = signal.scrollDelta.dy < 0 ? 1.15 : 0.85;
-              final currentScale = _controller.value.getMaxScaleOnAxis();
-              final newScale = (currentScale * scaleDelta).clamp(1.0, 6.0);
-              if (newScale <= 1.02) {
-                _controller.value = Matrix4.identity();
-                if (mounted) setState(() => _zoomed = false);
-                _setLocked(false);
-              } else {
-                final focalPoint = signal.localPosition;
-                _controller.value = Matrix4.identity()
-                  ..translateByDouble(
-                      -focalPoint.dx * (newScale - 1),
-                      -focalPoint.dy * (newScale - 1),
-                      0,
-                      1)
-                  ..scaleByDouble(newScale, newScale, 1, 1);
-                if (mounted) setState(() => _zoomed = true);
-                _setLocked(true);
-              }
-            }
-          },
-          onPointerDown: (_) {
-            _pointerCount++;
-            if (_pointerCount >= 2 || _zoomed) {
-              _setLocked(true);
-            }
-          },
-          onPointerUp: (_) => _releasePointer(),
-          onPointerCancel: (_) => _releasePointer(),
-          child: GestureDetector(
-            behavior: HitTestBehavior.opaque,
-            onDoubleTapDown: (details) => _doubleTapDetails = details,
-            onDoubleTap: _toggleZoom,
-            child: InteractiveViewer(
-              transformationController: _controller,
-              minScale: 1,
-              maxScale: 6,
-              boundaryMargin: const EdgeInsets.all(160),
-              panEnabled: _zoomed,
-              scaleEnabled: true,
-              clipBehavior: Clip.none,
-              onInteractionStart: (_) {
-                if (_pointerCount >= 2 || _zoomed) _setLocked(true);
-              },
-              onInteractionEnd: (_) {
-                final scale = _controller.value.getMaxScaleOnAxis();
-                final nextZoomed = scale > 1.03;
-                if (!nextZoomed) {
-                  _controller.value = Matrix4.identity();
-                }
-                if (mounted) setState(() => _zoomed = nextZoomed);
-                _setLocked(nextZoomed || _pointerCount >= 2);
-              },
-              child: child,
-            ),
-          ),
-        );
+    return Shortcuts(
+      shortcuts: {
+        LogicalKeySet(LogicalKeyboardKey.equal): const _ZoomInIntent(),
+        LogicalKeySet(LogicalKeyboardKey.add): const _ZoomInIntent(),
+        LogicalKeySet(LogicalKeyboardKey.numpadAdd): const _ZoomInIntent(),
+        LogicalKeySet(LogicalKeyboardKey.minus): const _ZoomOutIntent(),
+        LogicalKeySet(LogicalKeyboardKey.numpadSubtract): const _ZoomOutIntent(),
+        LogicalKeySet(LogicalKeyboardKey.digit0): const _ResetZoomIntent(),
+        LogicalKeySet(LogicalKeyboardKey.numpad0): const _ResetZoomIntent(),
+        LogicalKeySet(LogicalKeyboardKey.escape): const _ResetZoomIntent(),
       },
+      child: Actions(
+        actions: {
+          _ZoomInIntent: CallbackAction<_ZoomInIntent>(
+            onInvoke: (_) {
+              _zoomIn();
+              return null;
+            },
+          ),
+          _ZoomOutIntent: CallbackAction<_ZoomOutIntent>(
+            onInvoke: (_) {
+              _zoomOut();
+              return null;
+            },
+          ),
+          _ResetZoomIntent: CallbackAction<_ResetZoomIntent>(
+            onInvoke: (_) {
+              if (_zoomed) {
+                _resetZoom();
+              }
+              return null;
+            },
+          ),
+        },
+        child: Focus(
+          autofocus: true,
+          child: LayoutBuilder(
+            builder: (context, constraints) {
+              final hasFrame =
+                  constraints.hasBoundedWidth && constraints.hasBoundedHeight;
+              final child = hasFrame
+                  ? SizedBox(
+                      width: constraints.maxWidth,
+                      height: constraints.maxHeight,
+                      child: widget.child,
+                    )
+                  : widget.child;
+              return Listener(
+                onPointerSignal: (signal) {
+                  if (signal is PointerScrollEvent) {
+                    final scaleDelta = signal.scrollDelta.dy < 0 ? 1.15 : 0.85;
+                    final currentScale = _controller.value.getMaxScaleOnAxis();
+                    final newScale = (currentScale * scaleDelta).clamp(1.0, 6.0);
+                    if (newScale <= 1.02) {
+                      _controller.value = Matrix4.identity();
+                      if (mounted) setState(() => _zoomed = false);
+                      _setLocked(false);
+                    } else {
+                      final focalPoint = signal.localPosition;
+                      _controller.value = Matrix4.identity()
+                        ..translateByDouble(
+                            -focalPoint.dx * (newScale - 1),
+                            -focalPoint.dy * (newScale - 1),
+                            0,
+                            1)
+                        ..scaleByDouble(newScale, newScale, 1, 1);
+                      if (mounted) setState(() => _zoomed = true);
+                      _setLocked(true);
+                    }
+                  }
+                },
+                onPointerDown: (_) {
+                  _pointerCount++;
+                  if (_pointerCount >= 2 || _zoomed) {
+                    _setLocked(true);
+                  }
+                },
+                onPointerUp: (_) => _releasePointer(),
+                onPointerCancel: (_) => _releasePointer(),
+                child: GestureDetector(
+                  behavior: HitTestBehavior.opaque,
+                  onDoubleTapDown: (details) => _doubleTapDetails = details,
+                  onDoubleTap: _toggleZoom,
+                  child: InteractiveViewer(
+                    transformationController: _controller,
+                    minScale: 1,
+                    maxScale: 6,
+                    boundaryMargin: const EdgeInsets.all(160),
+                    panEnabled: _zoomed,
+                    scaleEnabled: true,
+                    clipBehavior: Clip.none,
+                    onInteractionStart: (_) {
+                      if (_pointerCount >= 2 || _zoomed) _setLocked(true);
+                    },
+                    onInteractionEnd: (_) {
+                      final scale = _controller.value.getMaxScaleOnAxis();
+                      final nextZoomed = scale > 1.03;
+                      if (!nextZoomed) {
+                        _controller.value = Matrix4.identity();
+                      }
+                      if (mounted) setState(() => _zoomed = nextZoomed);
+                      _setLocked(nextZoomed || _pointerCount >= 2);
+                    },
+                    child: child,
+                  ),
+                ),
+              );
+            },
+          ),
+        ),
+      ),
     );
   }
 

lib/features/settings/presentation/hidden_posts_screen.dart

@@ -1,9 +1,9 @@
 import 'package:cached_network_image/cached_network_image.dart';
 import 'package:flutter/material.dart';
 import 'package:flutter_riverpod/flutter_riverpod.dart';
-import 'package:go_router/go_router.dart';
 
 import '../../../app/app.dart';
+import '../../../app/app_navigator.dart';
 import '../../../backend/backend.dart';
 import '../../../core/utils/result.dart';
 import '../../../shared/widgets/adaptive_scaffold.dart';
@@ -62,9 +62,9 @@ class HiddenPostsScreen extends ConsumerWidget {
                     item: item,
                     onOpen: item.post == null
                         ? null
-                        : () => context.push(
-                              '/post/${item.post!.providerId}/${item.post!.id}',
-                              extra: item.post,
+                        : () => AppNavigator.openPost(
+                              context,
+                              post: item.post!,
                             ),
                     onRestore: () async {
                       await ref

lib/features/viewed/presentation/viewed_screen.dart

@@ -7,6 +7,7 @@ import 'package:flutter_riverpod/flutter_riverpod.dart';
 import 'package:go_router/go_router.dart';
 
 import '../../../app/app.dart';
+import '../../../app/app_navigator.dart';
 import '../../../app/responsive.dart';
 import '../../../backend/backend.dart';
 import '../../../shared/widgets/adaptive_scaffold.dart';
@@ -142,12 +143,10 @@ class _ViewedScreenState extends ConsumerState<ViewedScreen> {
                 mediaQualityMode:
                     MediaQualityMode.fromName(settings.mediaQualityMode),
                 favoriteKeys: favoriteKeys,
-                onOpen: (post) => context.push(
-                  '/post/${post.providerId}/${post.id}',
-                  extra: PostNavigationContext(
-                    currentPost: post,
-                    posts: allPosts,
-                  ),
+                onOpen: (post) => AppNavigator.openPost(
+                  context,
+                  post: post,
+                  postsList: allPosts,
                 ),
                 onFavorite: (post) => _toggleFavorite(
                   ref,
@@ -260,12 +259,10 @@ class _ViewedScreenState extends ConsumerState<ViewedScreen> {
                       isFavorite: favoriteKeys.contains(item.post.cacheKey),
                       isRu: isRu,
                       onOpen: () {
-                        context.push(
-                          '/post/${item.post.providerId}/${item.post.id}',
-                          extra: PostNavigationContext(
-                            currentPost: item.post,
-                            posts: allPosts,
-                          ),
+                        AppNavigator.openPost(
+                          context,
+                          post: item.post,
+                          postsList: allPosts,
                         );
                       },
                       onFavorite: () => _toggleFavorite(

lib/shared/widgets/app_shell.dart

@@ -7,13 +7,21 @@ import 'package:go_router/go_router.dart';
 import '../../app/app.dart';
 import '../../app/motion.dart';
 import '../../app/responsive.dart';
+import '../../app/router.dart';
 import '../../backend/backend.dart';
 import '../../core/utils/result.dart';
+import '../../features/feed/presentation/feed_controller.dart';
+import 'desktop_shortcuts_dialog.dart';
 
 class AppShell extends ConsumerStatefulWidget {
-  const AppShell({required this.child, super.key});
+  const AppShell({
+    required this.child,
+    this.navigationShell,
+    super.key,
+  });
 
   final Widget child;
+  final StatefulNavigationShell? navigationShell;
 
   static const destinations = [
     _Destination('feed', 'Feed', Icons.dashboard_rounded, '/'),
@@ -33,6 +41,30 @@ class AppShell extends ConsumerStatefulWidget {
     _Destination('settings', 'Settings', Icons.settings_rounded, '/settings'),
   ];
 
+  static int branchIndexForLocation(String location) {
+    if (location.startsWith('/settings')) return 7;
+    if (location.startsWith('/providers')) return 6;
+    if (location.startsWith('/artists')) return 5;
+    if (location.startsWith('/collections')) return 4;
+    if (location.startsWith('/viewed')) return 3;
+    if (location.startsWith('/favorites')) return 2;
+    if (location.startsWith('/search')) return 1;
+    return 0;
+  }
+
+  static String locationForBranchIndex(int index) {
+    return switch (index) {
+      1 => '/search',
+      2 => '/favorites',
+      3 => '/viewed',
+      4 => '/collections',
+      5 => '/artists',
+      6 => '/providers',
+      7 => '/settings',
+      _ => '/',
+    };
+  }
+
   static List<_Destination> _visibleDestinations(
     AppSettings settings,
     bool hasArtists,
@@ -52,11 +84,70 @@ class _AppShellState extends ConsumerState<AppShell> {
   final List<String> _tabHistory = [];
   String? _currentPath;
   bool _isBackNavigating = false;
+  bool _restoredTab = false;
+  late final AppLifecycleListener _lifecycleListener;
+
+  @override
+  void initState() {
+    super.initState();
+    _lifecycleListener = AppLifecycleListener(
+      onStateChange: (state) {
+        if (state == AppLifecycleState.paused ||
+            state == AppLifecycleState.inactive ||
+            state == AppLifecycleState.detached) {
+          _saveCurrentLocation();
+        }
+      },
+    );
+    WidgetsBinding.instance.addPostFrameCallback((_) {
+      final settings = ref.read(appSettingsProvider).value;
+      _maybeRestoreLastActiveTab(settings);
+    });
+  }
+
+  @override
+  void dispose() {
+    _lifecycleListener.dispose();
+    super.dispose();
+  }
+
+  void _saveCurrentLocation([String? location]) {
+    final loc = location ??
+        _currentPath ??
+        (widget.navigationShell != null
+            ? AppShell.locationForBranchIndex(
+                widget.navigationShell!.currentIndex)
+            : '/');
+    ref.read(settingsServiceProvider).saveLastActiveLocation(loc);
+  }
+
+  void _maybeRestoreLastActiveTab(AppSettings? settings) {
+    if (_restoredTab || settings == null) return;
+    final lastLocation = settings.lastActiveLocation;
+    if (lastLocation.isNotEmpty && lastLocation != '/') {
+      final idx = AppShell.branchIndexForLocation(lastLocation);
+      if (idx > 0 && widget.navigationShell != null) {
+        _restoredTab = true;
+        widget.navigationShell!.goBranch(idx, initialLocation: false);
+      }
+    }
+  }
 
   @override
   void didChangeDependencies() {
     super.didChangeDependencies();
     final path = GoRouterState.of(context).uri.path;
+    _syncPath(path);
+  }
+
+  @override
+  void didUpdateWidget(covariant AppShell oldWidget) {
+    super.didUpdateWidget(oldWidget);
+    final path = GoRouterState.of(context).uri.path;
+    _syncPath(path);
+  }
+
+  void _syncPath(String path) {
     if (_isBackNavigating) {
       _isBackNavigating = false;
       _currentPath = path;
@@ -74,10 +165,37 @@ class _AppShellState extends ConsumerState<AppShell> {
       }
     }
     _currentPath = path;
+    _saveCurrentLocation(path);
+  }
+
+  void _onNavigate(String location) {
+    final targetIndex = AppShell.branchIndexForLocation(location);
+    if (widget.navigationShell != null) {
+      if (widget.navigationShell!.currentIndex == targetIndex) {
+        branchNavKeys[targetIndex]
+            .currentState
+            ?.popUntil((route) => route.isFirst);
+      } else {
+        widget.navigationShell!.goBranch(
+          targetIndex,
+          initialLocation: false,
+        );
+      }
+    } else {
+      context.go(location);
+    }
+    _saveCurrentLocation(location);
   }
 
   bool _handleBack() {
-    if (Navigator.of(context).canPop()) {
+    final shell = widget.navigationShell;
+    if (shell != null) {
+      final currentBranchKey = branchNavKeys[shell.currentIndex];
+      if (currentBranchKey.currentState?.canPop() ?? false) {
+        currentBranchKey.currentState?.pop();
+        return true;
+      }
+    } else if (Navigator.of(context).canPop()) {
       Navigator.of(context).pop();
       return true;
     }
@@ -90,13 +208,13 @@ class _AppShellState extends ConsumerState<AppShell> {
     if (_tabHistory.isNotEmpty) {
       final previous = _tabHistory.removeLast();
       _isBackNavigating = true;
-      context.go(previous);
+      _onNavigate(previous);
       return true;
     }
 
-    if (currentPath != '/') {
+    if (currentPath != '/' && (shell == null || shell.currentIndex != 0)) {
       _isBackNavigating = true;
-      context.go('/');
+      _onNavigate('/');
       return true;
     }
 
@@ -105,6 +223,12 @@ class _AppShellState extends ConsumerState<AppShell> {
 
   @override
   Widget build(BuildContext context) {
+    ref.listen<AsyncValue<AppSettings>>(appSettingsProvider, (prev, next) {
+      next.whenData((settings) {
+        _maybeRestoreLastActiveTab(settings);
+      });
+    });
+
     final settings =
         ref.watch(appSettingsProvider).value ?? AppSettings.defaults;
     final artistConfigs =
@@ -127,27 +251,60 @@ class _AppShellState extends ConsumerState<AppShell> {
           LogicalKeySet(LogicalKeyboardKey.control, LogicalKeyboardKey.keyF):
               const _NavigateIntent('/search'),
           LogicalKeySet(LogicalKeyboardKey.escape): const _BackIntent(),
-          LogicalKeySet(LogicalKeyboardKey.digit1): const _NavigateIntent('/'),
-          LogicalKeySet(LogicalKeyboardKey.digit2):
+          // Ctrl + 1..8
+          LogicalKeySet(LogicalKeyboardKey.control, LogicalKeyboardKey.digit1):
+              const _NavigateIntent('/'),
+          LogicalKeySet(LogicalKeyboardKey.control, LogicalKeyboardKey.digit2):
               const _NavigateIntent('/search'),
-          LogicalKeySet(LogicalKeyboardKey.digit3):
+          LogicalKeySet(LogicalKeyboardKey.control, LogicalKeyboardKey.digit3):
               const _NavigateIntent('/favorites'),
-          LogicalKeySet(LogicalKeyboardKey.digit4):
+          LogicalKeySet(LogicalKeyboardKey.control, LogicalKeyboardKey.digit4):
               const _NavigateIntent('/viewed'),
-          LogicalKeySet(LogicalKeyboardKey.digit5):
+          LogicalKeySet(LogicalKeyboardKey.control, LogicalKeyboardKey.digit5):
               const _NavigateIntent('/collections'),
-          LogicalKeySet(LogicalKeyboardKey.digit6):
+          LogicalKeySet(LogicalKeyboardKey.control, LogicalKeyboardKey.digit6):
               const _NavigateIntent('/artists'),
-          LogicalKeySet(LogicalKeyboardKey.digit7):
+          LogicalKeySet(LogicalKeyboardKey.control, LogicalKeyboardKey.digit7):
               const _NavigateIntent('/providers'),
-          LogicalKeySet(LogicalKeyboardKey.digit8):
+          LogicalKeySet(LogicalKeyboardKey.control, LogicalKeyboardKey.digit8):
               const _NavigateIntent('/settings'),
+          // Alt + 1..8
+          LogicalKeySet(LogicalKeyboardKey.alt, LogicalKeyboardKey.digit1):
+              const _NavigateIntent('/'),
+          LogicalKeySet(LogicalKeyboardKey.alt, LogicalKeyboardKey.digit2):
+              const _NavigateIntent('/search'),
+          LogicalKeySet(LogicalKeyboardKey.alt, LogicalKeyboardKey.digit3):
+              const _NavigateIntent('/favorites'),
+          LogicalKeySet(LogicalKeyboardKey.alt, LogicalKeyboardKey.digit4):
+              const _NavigateIntent('/viewed'),
+          LogicalKeySet(LogicalKeyboardKey.alt, LogicalKeyboardKey.digit5):
+              const _NavigateIntent('/collections'),
+          LogicalKeySet(LogicalKeyboardKey.alt, LogicalKeyboardKey.digit6):
+              const _NavigateIntent('/artists'),
+          LogicalKeySet(LogicalKeyboardKey.alt, LogicalKeyboardKey.digit7):
+              const _NavigateIntent('/providers'),
+          LogicalKeySet(LogicalKeyboardKey.alt, LogicalKeyboardKey.digit8):
+              const _NavigateIntent('/settings'),
+          // Tab cycling
+          LogicalKeySet(LogicalKeyboardKey.control, LogicalKeyboardKey.tab):
+              const _CycleTabIntent(forward: true),
+          LogicalKeySet(LogicalKeyboardKey.control, LogicalKeyboardKey.shift, LogicalKeyboardKey.tab):
+              const _CycleTabIntent(forward: false),
+          // Refresh
+          LogicalKeySet(LogicalKeyboardKey.control, LogicalKeyboardKey.keyR):
+              const _RefreshIntent(),
+          LogicalKeySet(LogicalKeyboardKey.f5): const _RefreshIntent(),
+          // Shortcuts help cheat sheet
+          LogicalKeySet(LogicalKeyboardKey.question): const _HelpIntent(),
+          LogicalKeySet(LogicalKeyboardKey.f1): const _HelpIntent(),
+          LogicalKeySet(LogicalKeyboardKey.shift, LogicalKeyboardKey.slash):
+              const _HelpIntent(),
         },
         child: Actions(
           actions: {
             _NavigateIntent: CallbackAction<_NavigateIntent>(
               onInvoke: (intent) {
-                context.go(intent.location);
+                _onNavigate(intent.location);
                 return null;
               },
             ),
@@ -157,6 +314,33 @@ class _AppShellState extends ConsumerState<AppShell> {
                 return null;
               },
             ),
+            _CycleTabIntent: CallbackAction<_CycleTabIntent>(
+              onInvoke: (intent) {
+                if (destinations.isEmpty) return null;
+                final currentBranch = widget.navigationShell?.currentIndex ?? 0;
+                final currentIdx = destinations.indexWhere(
+                  (d) => AppShell.branchIndexForLocation(d.location) == currentBranch,
+                );
+                final safeIdx = currentIdx < 0 ? 0 : currentIdx;
+                final nextIdx = intent.forward
+                    ? ((safeIdx + 1) % destinations.length)
+                    : ((safeIdx - 1 + destinations.length) % destinations.length);
+                _onNavigate(destinations[nextIdx].location);
+                return null;
+              },
+            ),
+            _RefreshIntent: CallbackAction<_RefreshIntent>(
+              onInvoke: (_) {
+                ref.read(feedControllerProvider.notifier).refresh();
+                return null;
+              },
+            ),
+            _HelpIntent: CallbackAction<_HelpIntent>(
+              onInvoke: (_) {
+                DesktopShortcutsDialog.show(context);
+                return null;
+              },
+            ),
           },
           child: Focus(
             autofocus: true,
@@ -164,11 +348,15 @@ class _AppShellState extends ConsumerState<AppShell> {
                 ? _DesktopShell(
                     destinations: destinations,
                     ru: ru,
+                    currentBranchIndex: widget.navigationShell?.currentIndex,
+                    onNavigate: _onNavigate,
                     child: widget.child,
                   )
                 : _MobileShell(
                     destinations: destinations,
                     ru: ru,
+                    currentBranchIndex: widget.navigationShell?.currentIndex,
+                    onNavigate: _onNavigate,
                     child: widget.child,
                   ),
           ),
@@ -183,10 +371,15 @@ class _DesktopShell extends StatefulWidget {
     required this.child,
     required this.destinations,
     required this.ru,
+    required this.onNavigate,
+    this.currentBranchIndex,
   });
+
   final Widget child;
   final List<_Destination> destinations;
   final bool ru;
+  final ValueChanged<String> onNavigate;
+  final int? currentBranchIndex;
 
   @override
   State<_DesktopShell> createState() => _DesktopShellState();
@@ -194,15 +387,21 @@ class _DesktopShell extends StatefulWidget {
 
 class _DesktopShellState extends State<_DesktopShell> {
   bool _hovered = false;
+  bool _pinned = false;
 
   @override
   Widget build(BuildContext context) {
+    final theme = Theme.of(context);
+    final scheme = theme.colorScheme;
+    final isDark = theme.brightness == Brightness.dark;
     final location = GoRouterState.of(context).uri.path;
+    final activeBranch = widget.currentBranchIndex ??
+        AppShell.branchIndexForLocation(location);
     final selected = widget.destinations.indexWhere(
-      (item) => item.location == '/'
-          ? location == '/'
-          : location.startsWith(item.location),
+      (item) => AppShell.branchIndexForLocation(item.location) == activeBranch,
     );
+    final isExpanded = _pinned || _hovered;
+
     return Scaffold(
       body: Row(
         children: [
@@ -210,36 +409,249 @@ class _DesktopShellState extends State<_DesktopShell> {
             onEnter: (_) => setState(() => _hovered = true),
             onExit: (_) => setState(() => _hovered = false),
             child: AnimatedContainer(
-              duration: AppMotion.duration(context, 180),
+              duration: AppMotion.duration(context, 200),
               curve: Curves.easeOutCubic,
-              width: _hovered ? 256 : 72,
-              color: Theme.of(context).navigationRailTheme.backgroundColor,
-              child: SafeArea(
-                child: Padding(
-                  padding:
-                      const EdgeInsets.symmetric(vertical: 12, horizontal: 8),
-                  child: Column(
-                    children: [
-                      for (var index = 0;
-                          index < widget.destinations.length;
-                          index++)
-                        _RailButton(
-                          destination: widget.destinations[index],
-                          ru: widget.ru,
-                          selected: (selected < 0 ? 0 : selected) == index,
-                          expanded: _hovered,
-                          onTap: () {
-                            context.go(widget.destinations[index].location);
-                          },
+              width: isExpanded ? 260 : 74,
+              decoration: BoxDecoration(
+                color: isDark
+                    ? scheme.surfaceContainerHigh.withValues(alpha: 0.75)
+                    : scheme.surface.withValues(alpha: 0.85),
+                border: Border(
+                  right: BorderSide(
+                    color: isDark
+                        ? Colors.white.withValues(alpha: 0.12)
+                        : scheme.outlineVariant.withValues(alpha: 0.35),
+                    width: 1,
+                  ),
+                ),
+                boxShadow: [
+                  BoxShadow(
+                    color: Colors.black.withValues(alpha: isDark ? 0.3 : 0.05),
+                    blurRadius: 18,
+                    offset: const Offset(4, 0),
+                  ),
+                ],
+              ),
+              child: ClipRect(
+                child: BackdropFilter(
+                  filter: ImageFilter.blur(sigmaX: 20, sigmaY: 20),
+                  child: SafeArea(
+                    child: Column(
+                      children: [
+                        // App Brand Header
+                        Padding(
+                          padding: const EdgeInsets.fromLTRB(14, 16, 12, 14),
+                          child: Row(
+                            children: [
+                              Container(
+                                width: 44,
+                                height: 44,
+                                decoration: BoxDecoration(
+                                  gradient: LinearGradient(
+                                    begin: Alignment.topLeft,
+                                    end: Alignment.bottomRight,
+                                    colors: [
+                                      scheme.primary,
+                                      scheme.tertiary,
+                                    ],
+                                  ),
+                                  borderRadius: BorderRadius.circular(14),
+                                  boxShadow: [
+                                    BoxShadow(
+                                      color: scheme.primary.withValues(alpha: 0.35),
+                                      blurRadius: 12,
+                                      offset: const Offset(0, 3),
+                                    ),
+                                  ],
+                                ),
+                                child: const Center(
+                                  child: Icon(
+                                    Icons.auto_awesome_rounded,
+                                    color: Colors.white,
+                                    size: 24,
+                                  ),
+                                ),
+                              ),
+                              if (isExpanded) ...[
+                                const SizedBox(width: 12),
+                                Expanded(
+                                  child: Column(
+                                    crossAxisAlignment: CrossAxisAlignment.start,
+                                    mainAxisSize: MainAxisSize.min,
+                                    children: [
+                                      Text(
+                                        'Lunaris',
+                                        style: theme.textTheme.titleMedium?.copyWith(
+                                          fontWeight: FontWeight.w800,
+                                          letterSpacing: 0.2,
+                                        ),
+                                      ),
+                                      const SizedBox(height: 2),
+                                      Container(
+                                        padding: const EdgeInsets.symmetric(
+                                          horizontal: 6,
+                                          vertical: 1.5,
+                                        ),
+                                        decoration: BoxDecoration(
+                                          color: scheme.primary.withValues(alpha: 0.15),
+                                          borderRadius: BorderRadius.circular(6),
+                                          border: Border.all(
+                                            color: scheme.primary.withValues(alpha: 0.3),
+                                            width: 0.8,
+                                          ),
+                                        ),
+                                        child: Text(
+                                          'v3.6.0',
+                                          style: TextStyle(
+                                            fontSize: 10,
+                                            fontWeight: FontWeight.bold,
+                                            color: scheme.primary,
+                                            letterSpacing: 0.4,
+                                          ),
+                                        ),
+                                      ),
+                                    ],
+                                  ),
+                                ),
+                                IconButton(
+                                  visualDensity: VisualDensity.compact,
+                                  tooltip: _pinned
+                                      ? (widget.ru ? 'Открепить панель' : 'Unpin panel')
+                                      : (widget.ru ? 'Закрепить панель' : 'Pin panel'),
+                                  onPressed: () {
+                                    setState(() => _pinned = !_pinned);
+                                  },
+                                  icon: Icon(
+                                    _pinned
+                                        ? Icons.push_pin_rounded
+                                        : Icons.push_pin_outlined,
+                                    size: 19,
+                                    color: _pinned ? scheme.primary : scheme.onSurfaceVariant,
+                                  ),
+                                ),
+                              ],
+                            ],
+                          ),
                         ),
-                      const Spacer(),
-                    ],
+                        const Divider(height: 1),
+                        const SizedBox(height: 8),
+
+                        // Destinations List
+                        Expanded(
+                          child: ListView(
+                            padding: const EdgeInsets.symmetric(horizontal: 8),
+                            children: [
+                              for (var index = 0;
+                                  index < widget.destinations.length;
+                                  index++)
+                                _RailButton(
+                                  destination: widget.destinations[index],
+                                  ru: widget.ru,
+                                  selected: (selected < 0 ? 0 : selected) == index,
+                                  expanded: isExpanded,
+                                  shortcutKey: 'Ctrl+${index + 1}',
+                                  onTap: () {
+                                    widget.onNavigate(
+                                        widget.destinations[index].location);
+                                  },
+                                ),
+                            ],
+                          ),
+                        ),
+
+                        // Bottom Actions
+                        const Divider(height: 1),
+                        Padding(
+                          padding: const EdgeInsets.symmetric(
+                              horizontal: 8, vertical: 8),
+                          child: Column(
+                            children: [
+                              // Shortcuts helper button
+                              Tooltip(
+                                message: isExpanded
+                                    ? ''
+                                    : (widget.ru
+                                        ? 'Горячие клавиши (F1 / ?)'
+                                        : 'Keyboard Shortcuts (F1 / ?)'),
+                                waitDuration: const Duration(milliseconds: 350),
+                                child: Material(
+                                  color: Colors.transparent,
+                                  borderRadius: BorderRadius.circular(14),
+                                  clipBehavior: Clip.antiAlias,
+                                  child: InkWell(
+                                    onTap: () => DesktopShortcutsDialog.show(context),
+                                    child: SizedBox(
+                                      height: 44,
+                                      child: Row(
+                                        children: [
+                                          SizedBox(
+                                            width: 58,
+                                            child: Icon(
+                                              Icons.keyboard_rounded,
+                                              size: 22,
+                                              color: scheme.onSurfaceVariant,
+                                            ),
+                                          ),
+                                          if (isExpanded) ...[
+                                            Expanded(
+                                              child: Text(
+                                                widget.ru
+                                                    ? 'Горячие клавиши'
+                                                    : 'Shortcuts',
+                                                style: TextStyle(
+                                                  fontWeight: FontWeight.w600,
+                                                  fontSize: 13,
+                                                  color: scheme.onSurface,
+                                                ),
+                                                overflow: TextOverflow.ellipsis,
+                                              ),
+                                            ),
+                                            Container(
+                                              padding: const EdgeInsets.symmetric(
+                                                horizontal: 6,
+                                                vertical: 2,
+                                              ),
+                                              decoration: BoxDecoration(
+                                                color: isDark
+                                                    ? Colors.white.withValues(alpha: 0.1)
+                                                    : Colors.black.withValues(alpha: 0.06),
+                                                borderRadius: BorderRadius.circular(6),
+                                              ),
+                                              child: const Text(
+                                                '?',
+                                                style: TextStyle(
+                                                  fontSize: 11,
+                                                  fontWeight: FontWeight.bold,
+                                                  fontFamily: 'monospace',
+                                                ),
+                                              ),
+                                            ),
+                                            const SizedBox(width: 8),
+                                          ],
+                                        ],
+                                      ),
+                                    ),
+                                  ),
+                                ),
+                              ),
+
+                              // Quick pin toggle button when collapsed
+                              if (!isExpanded)
+                                IconButton(
+                                  tooltip: widget.ru ? 'Закрепить панель' : 'Pin sidebar',
+                                  onPressed: () => setState(() => _pinned = true),
+                                  icon: const Icon(Icons.chevron_right_rounded, size: 20),
+                                ),
+                            ],
+                          ),
+                        ),
+                      ],
+                    ),
                   ),
                 ),
               ),
             ),
           ),
-          const VerticalDivider(width: 1),
           Expanded(child: widget.child),
         ],
       ),
@@ -253,6 +665,7 @@ class _RailButton extends StatelessWidget {
     required this.selected,
     required this.expanded,
     required this.ru,
+    required this.shortcutKey,
     required this.onTap,
   });
 
@@ -260,65 +673,117 @@ class _RailButton extends StatelessWidget {
   final bool selected;
   final bool expanded;
   final bool ru;
+  final String shortcutKey;
   final VoidCallback onTap;
 
   @override
   Widget build(BuildContext context) {
-    final colors = Theme.of(context).colorScheme;
+    final theme = Theme.of(context);
+    final scheme = theme.colorScheme;
+    final isDark = theme.brightness == Brightness.dark;
+    final label = destination.labelFor(ru);
+
     return Padding(
-      padding: const EdgeInsets.only(bottom: 8),
+      padding: const EdgeInsets.symmetric(vertical: 2),
       child: Tooltip(
-        message: expanded ? '' : destination.labelFor(ru),
-        waitDuration: const Duration(milliseconds: 450),
+        message: expanded ? '' : '$label ($shortcutKey)',
+        waitDuration: const Duration(milliseconds: 350),
         child: Material(
-          color: selected ? colors.primaryContainer : Colors.transparent,
-          borderRadius: BorderRadius.circular(28),
+          color: selected
+              ? scheme.primary.withValues(alpha: isDark ? 0.22 : 0.12)
+              : Colors.transparent,
+          borderRadius: BorderRadius.circular(14),
           clipBehavior: Clip.antiAlias,
           child: InkWell(
             onTap: onTap,
-            child: SizedBox(
-              height: 48,
+            child: Container(
+              height: 46,
+              decoration: BoxDecoration(
+                borderRadius: BorderRadius.circular(14),
+                border: selected
+                    ? Border.all(
+                        color: scheme.primary.withValues(alpha: isDark ? 0.45 : 0.28),
+                        width: 1.1,
+                      )
+                    : null,
+              ),
               child: Row(
                 children: [
-                  SizedBox(
-                    width: 56,
-                    child: Icon(
-                      destination.icon,
-                      color: selected
-                          ? colors.onPrimaryContainer
-                          : colors.onSurfaceVariant,
+                  // Active left indicator bar
+                  Container(
+                    width: 3.5,
+                    height: 22,
+                    decoration: BoxDecoration(
+                      color: selected ? scheme.primary : Colors.transparent,
+                      borderRadius: BorderRadius.circular(2),
+                      boxShadow: selected
+                          ? [
+                              BoxShadow(
+                                color: scheme.primary.withValues(alpha: 0.6),
+                                blurRadius: 6,
+                              ),
+                            ]
+                          : null,
                     ),
                   ),
-                  if (expanded)
+                  SizedBox(
+                    width: 54.5,
+                    child: Center(
+                      child: Icon(
+                        destination.icon,
+                        size: 22,
+                        color: selected
+                            ? scheme.primary
+                            : (isDark
+                                ? scheme.onSurfaceVariant.withValues(alpha: 0.85)
+                                : scheme.onSurfaceVariant),
+                      ),
+                    ),
+                  ),
+                  if (expanded) ...[
                     Expanded(
-                      child: ClipRect(
-                        child: AnimatedOpacity(
-                          opacity: 1,
-                          duration: AppMotion.duration(context, 120),
-                          curve: Curves.easeOut,
-                          child: Align(
-                            alignment: Alignment.centerLeft,
-                            child: Text(
-                              destination.labelFor(ru),
-                              maxLines: 1,
-                              overflow: TextOverflow.clip,
-                              softWrap: false,
-                              style: TextStyle(
-                                fontWeight: selected
-                                    ? FontWeight.w700
-                                    : FontWeight.w600,
-                                color: selected
-                                    ? colors.onPrimaryContainer
-                                    : colors.onSurface,
-                              ),
-                            ),
-                          ),
+                      child: Text(
+                        label,
+                        maxLines: 1,
+                        overflow: TextOverflow.ellipsis,
+                        style: TextStyle(
+                          fontSize: 13.5,
+                          fontWeight: selected ? FontWeight.w700 : FontWeight.w500,
+                          color: selected ? scheme.primary : scheme.onSurface,
                         ),
                       ),
-                    )
-                  else
-                    const SizedBox.shrink(),
-                  if (expanded) const SizedBox(width: 12),
+                    ),
+                    Container(
+                      padding: const EdgeInsets.symmetric(
+                        horizontal: 5.5,
+                        vertical: 2,
+                      ),
+                      decoration: BoxDecoration(
+                        color: isDark
+                            ? Colors.white.withValues(alpha: 0.08)
+                            : Colors.black.withValues(alpha: 0.05),
+                        borderRadius: BorderRadius.circular(6),
+                        border: Border.all(
+                          color: isDark
+                              ? Colors.white.withValues(alpha: 0.12)
+                              : Colors.black.withValues(alpha: 0.08),
+                          width: 0.8,
+                        ),
+                      ),
+                      child: Text(
+                        shortcutKey,
+                        style: TextStyle(
+                          fontSize: 10,
+                          fontWeight: FontWeight.bold,
+                          fontFamily: 'monospace',
+                          color: selected
+                              ? scheme.primary
+                              : scheme.onSurfaceVariant.withValues(alpha: 0.8),
+                        ),
+                      ),
+                    ),
+                    const SizedBox(width: 10),
+                  ],
                 ],
               ),
             ),
@@ -334,10 +799,14 @@ class _MobileShell extends StatelessWidget {
     required this.child,
     required this.destinations,
     required this.ru,
+    required this.onNavigate,
+    this.currentBranchIndex,
   });
   final Widget child;
   final List<_Destination> destinations;
   final bool ru;
+  final ValueChanged<String> onNavigate;
+  final int? currentBranchIndex;
 
   @override
   Widget build(BuildContext context) {
@@ -347,10 +816,10 @@ class _MobileShell extends StatelessWidget {
         .take(6)
         .toList();
     final location = GoRouterState.of(context).uri.path;
+    final activeBranch = currentBranchIndex ??
+        AppShell.branchIndexForLocation(location);
     final selected = items.indexWhere(
-      (item) => item.location == '/'
-          ? location == '/'
-          : location.startsWith(item.location),
+      (item) => AppShell.branchIndexForLocation(item.location) == activeBranch,
     );
     final isKeyboardOpen = MediaQuery.viewInsetsOf(context).bottom > 0;
     final bottomInset = isKeyboardOpen
@@ -368,13 +837,13 @@ class _MobileShell extends StatelessWidget {
         ),
         child: child,
       ),
-      floatingActionButton: (location == '/settings' || isKeyboardOpen)
+      floatingActionButton: (activeBranch == 7 || isKeyboardOpen)
           ? null
           : Padding(
               padding: const EdgeInsets.only(bottom: 0, right: 2),
               child: _LiquidGlassSettingsButton(
                 ru: ru,
-                onTap: () => context.go('/settings'),
+                onTap: () => onNavigate('/settings'),
               ),
             ),
       floatingActionButtonLocation: FloatingActionButtonLocation.endFloat,
@@ -383,7 +852,7 @@ class _MobileShell extends StatelessWidget {
           : _LiquidGlassBottomBar(
               selectedIndex: selected < 0 ? 0 : selected,
               onDestinationSelected: (index) =>
-                  context.go(items[index].location),
+                  onNavigate(items[index].location),
               items: items,
               ru: ru,
             ),
@@ -811,3 +1280,16 @@ class _NavigateIntent extends Intent {
 class _BackIntent extends Intent {
   const _BackIntent();
 }
+
+class _CycleTabIntent extends Intent {
+  const _CycleTabIntent({required this.forward});
+  final bool forward;
+}
+
+class _RefreshIntent extends Intent {
+  const _RefreshIntent();
+}
+
+class _HelpIntent extends Intent {
+  const _HelpIntent();
+}

lib/shared/widgets/desktop_shortcuts_dialog.dart

@@ -0,0 +1,321 @@
+import 'dart:ui';
+import 'package:flutter/material.dart';
+
+class DesktopShortcutsDialog extends StatelessWidget {
+  const DesktopShortcutsDialog({super.key});
+
+  static Future<void> show(BuildContext context) {
+    return showDialog(
+      context: context,
+      barrierColor: Colors.black54,
+      builder: (_) => const DesktopShortcutsDialog(),
+    );
+  }
+
+  @override
+  Widget build(BuildContext context) {
+    final theme = Theme.of(context);
+    final scheme = theme.colorScheme;
+    final isDark = theme.brightness == Brightness.dark;
+
+    return Dialog(
+      backgroundColor: Colors.transparent,
+      insetPadding: const EdgeInsets.symmetric(horizontal: 24, vertical: 32),
+      child: ConstrainedBox(
+        constraints: const BoxConstraints(maxWidth: 720, maxHeight: 680),
+        child: ClipRRect(
+          borderRadius: BorderRadius.circular(24),
+          child: BackdropFilter(
+            filter: ImageFilter.blur(sigmaX: 20, sigmaY: 20),
+            child: Container(
+              decoration: BoxDecoration(
+                color: isDark
+                    ? scheme.surfaceContainerHigh.withValues(alpha: 0.88)
+                    : Colors.white.withValues(alpha: 0.94),
+                borderRadius: BorderRadius.circular(24),
+                border: Border.all(
+                  color: isDark
+                      ? Colors.white.withValues(alpha: 0.16)
+                      : scheme.outlineVariant.withValues(alpha: 0.4),
+                  width: 1.2,
+                ),
+                boxShadow: [
+                  BoxShadow(
+                    color: Colors.black.withValues(alpha: isDark ? 0.45 : 0.12),
+                    blurRadius: 32,
+                    offset: const Offset(0, 12),
+                  ),
+                ],
+              ),
+              child: Column(
+                mainAxisSize: MainAxisSize.min,
+                crossAxisAlignment: CrossAxisAlignment.stretch,
+                children: [
+                  // Header
+                  Padding(
+                    padding: const EdgeInsets.fromLTRB(24, 20, 16, 16),
+                    child: Row(
+                      children: [
+                        Container(
+                          padding: const EdgeInsets.all(10),
+                          decoration: BoxDecoration(
+                            color: scheme.primaryContainer.withValues(alpha: 0.7),
+                            borderRadius: BorderRadius.circular(14),
+                          ),
+                          child: Icon(
+                            Icons.keyboard_rounded,
+                            color: scheme.primary,
+                            size: 24,
+                          ),
+                        ),
+                        const SizedBox(width: 16),
+                        Expanded(
+                          child: Column(
+                            crossAxisAlignment: CrossAxisAlignment.start,
+                            children: [
+                              Text(
+                                'Горячие клавиши',
+                                style: theme.textTheme.titleLarge?.copyWith(
+                                  fontWeight: FontWeight.bold,
+                                ),
+                              ),
+                              const SizedBox(height: 2),
+                              Text(
+                                'Быстрое управление с клавиатуры для ПК',
+                                style: theme.textTheme.bodyMedium?.copyWith(
+                                  color: scheme.onSurfaceVariant,
+                                ),
+                              ),
+                            ],
+                          ),
+                        ),
+                        IconButton(
+                          onPressed: () => Navigator.of(context).pop(),
+                          icon: const Icon(Icons.close_rounded),
+                          tooltip: 'Закрыть (Esc)',
+                        ),
+                      ],
+                    ),
+                  ),
+                  const Divider(height: 1),
+
+                  // Shortcuts list
+                  Flexible(
+                    child: ListView(
+                      padding: const EdgeInsets.fromLTRB(24, 16, 24, 24),
+                      children: const [
+                        _ShortcutSection(
+                          icon: Icons.navigation_rounded,
+                          title: 'Общие и навигация',
+                          items: [
+                            _ShortcutRow(['Ctrl', '1…8'], 'Переключение между вкладками'),
+                            _ShortcutRow(['Ctrl', 'Tab'], 'Следующая вкладка'),
+                            _ShortcutRow(['Ctrl', 'Shift', 'Tab'], 'Предыдущая вкладка'),
+                            _ShortcutRow(['Ctrl', 'F'], 'Перейти к поиску / строка поиска'),
+                            _ShortcutRow(['Ctrl', 'R'], 'Обновить ленту / страницу'),
+                            _ShortcutRow(['F5'], 'Обновить страницу'),
+                            _ShortcutRow(['Esc'], 'Закрыть окно / назад / сбросить выбор'),
+                            _ShortcutRow(['?'], 'Открыть это окно горячих клавиш'),
+                          ],
+                        ),
+                        SizedBox(height: 20),
+                        _ShortcutSection(
+                          icon: Icons.smart_display_rounded,
+                          title: 'Видеоплеер',
+                          items: [
+                            _ShortcutRow(['Пробел'], 'Воспроизведение / Пауза'),
+                            _ShortcutRow(['←', '→'], 'Перемотка на 5 секунд назад / вперед'),
+                            _ShortcutRow(['Shift', '← / →'], 'Перемотка на 15 секунд'),
+                            _ShortcutRow(['↑', '↓'], 'Регулировка громкости (±5%)'),
+                            _ShortcutRow(['M'], 'Включить / выключить звук'),
+                            _ShortcutRow(['F'], 'Полноэкранный режим (Full Screen)'),
+                            _ShortcutRow(['L'], 'Повтор видео (Loop on/off)'),
+                            _ShortcutRow(['Esc'], 'Выйти из полноэкранного режима'),
+                          ],
+                        ),
+                        SizedBox(height: 20),
+                        _ShortcutSection(
+                          icon: Icons.photo_library_rounded,
+                          title: 'Фото и просмотр постов',
+                          items: [
+                            _ShortcutRow(['←', '→'], 'Предыдущее / следующее фото или пост'),
+                            _ShortcutRow(['+'], 'Увеличить масштаб (Zoom In)'),
+                            _ShortcutRow(['-'], 'Уменьшить масштаб (Zoom Out)'),
+                            _ShortcutRow(['0'], 'Сбросить масштаб (100%)'),
+                            _ShortcutRow(['F'], 'Подгонка по экрану / на весь экран'),
+                            _ShortcutRow(['D'], 'Скачать текущее изображение'),
+                            _ShortcutRow(['Ctrl', 'S'], 'Сохранить / Скачать файл'),
+                            _ShortcutRow(['Esc'], 'Сброс зума / назад'),
+                          ],
+                        ),
+                        SizedBox(height: 20),
+                        _ShortcutSection(
+                          icon: Icons.grid_view_rounded,
+                          title: 'Лента и посты',
+                          items: [
+                            _ShortcutRow(['R'], 'Открыть случайный пост'),
+                            _ShortcutRow(['V'], 'Включить/выключить режим выбора постов'),
+                          ],
+                        ),
+                      ],
+                    ),
+                  ),
+                ],
+              ),
+            ),
+          ),
+        ),
+      ),
+    );
+  }
+}
+
+class _ShortcutSection extends StatelessWidget {
+  const _ShortcutSection({
+    required this.icon,
+    required this.title,
+    required this.items,
+  });
+
+  final IconData icon;
+  final String title;
+  final List<_ShortcutRow> items;
+
+  @override
+  Widget build(BuildContext context) {
+    final theme = Theme.of(context);
+    final scheme = theme.colorScheme;
+    final isDark = theme.brightness == Brightness.dark;
+
+    return Column(
+      crossAxisAlignment: CrossAxisAlignment.start,
+      children: [
+        Row(
+          children: [
+            Icon(icon, size: 18, color: scheme.primary),
+            const SizedBox(width: 8),
+            Text(
+              title,
+              style: theme.textTheme.titleSmall?.copyWith(
+                fontWeight: FontWeight.bold,
+                color: scheme.primary,
+                letterSpacing: 0.3,
+              ),
+            ),
+          ],
+        ),
+        const SizedBox(height: 8),
+        Container(
+          decoration: BoxDecoration(
+            color: isDark
+                ? scheme.surface.withValues(alpha: 0.6)
+                : scheme.surfaceContainerHighest.withValues(alpha: 0.4),
+            borderRadius: BorderRadius.circular(16),
+            border: Border.all(
+              color: isDark
+                  ? Colors.white.withValues(alpha: 0.08)
+                  : Colors.black.withValues(alpha: 0.04),
+            ),
+          ),
+          child: Column(
+            children: [
+              for (var i = 0; i < items.length; i++) ...[
+                if (i > 0)
+                  Divider(
+                    height: 1,
+                    thickness: 1,
+                    color: isDark
+                        ? Colors.white.withValues(alpha: 0.05)
+                        : Colors.black.withValues(alpha: 0.04),
+                  ),
+                items[i],
+              ],
+            ],
+          ),
+        ),
+      ],
+    );
+  }
+}
+
+class _ShortcutRow extends StatelessWidget {
+  const _ShortcutRow(this.keys, this.description);
+
+  final List<String> keys;
+  final String description;
+
+  @override
+  Widget build(BuildContext context) {
+    final theme = Theme.of(context);
+    final scheme = theme.colorScheme;
+
+    return Padding(
+      padding: const EdgeInsets.symmetric(horizontal: 14, vertical: 8),
+      child: Row(
+        children: [
+          Expanded(
+            child: Text(
+              description,
+              style: theme.textTheme.bodyMedium?.copyWith(
+                color: scheme.onSurface,
+                fontWeight: FontWeight.w500,
+              ),
+            ),
+          ),
+          const SizedBox(width: 12),
+          Wrap(
+            spacing: 4,
+            runSpacing: 4,
+            children: keys.map((key) => _KeyCap(key)).toList(growable: false),
+          ),
+        ],
+      ),
+    );
+  }
+}
+
+class _KeyCap extends StatelessWidget {
+  const _KeyCap(this.text);
+
+  final String text;
+
+  @override
+  Widget build(BuildContext context) {
+    final theme = Theme.of(context);
+    final isDark = theme.brightness == Brightness.dark;
+    final scheme = theme.colorScheme;
+
+    return Container(
+      padding: const EdgeInsets.symmetric(horizontal: 8, vertical: 4),
+      decoration: BoxDecoration(
+        color: isDark
+            ? scheme.surfaceContainerHighest.withValues(alpha: 0.9)
+            : Colors.white,
+        borderRadius: BorderRadius.circular(8),
+        border: Border.all(
+          color: isDark
+              ? Colors.white.withValues(alpha: 0.2)
+              : Colors.black.withValues(alpha: 0.15),
+          width: 1,
+        ),
+        boxShadow: [
+          BoxShadow(
+            color: Colors.black.withValues(alpha: isDark ? 0.4 : 0.08),
+            offset: const Offset(0, 1.5),
+            blurRadius: 1,
+          ),
+        ],
+      ),
+      child: Text(
+        text,
+        style: TextStyle(
+          fontFamily: 'monospace',
+          fontSize: 12,
+          fontWeight: FontWeight.bold,
+          color: scheme.onSurface,
+          letterSpacing: 0.2,
+        ),
+      ),
+    );
+  }
+}

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: 3.5.4+80
+version: 3.6.0+82
 
 environment:
   sdk: ">=3.3.0 <4.0.0"

test/features/tab_navigation_preservation_test.dart

@@ -0,0 +1,47 @@
+import 'package:flutter_test/flutter_test.dart';
+import 'package:gel_rule_app/backend/backend.dart';
+import 'package:gel_rule_app/shared/widgets/app_shell.dart';
+
+void main() {
+  TestWidgetsFlutterBinding.ensureInitialized();
+
+  group('Tab Navigation & State Preservation Tests', () {
+    test('AppShell branchIndexForLocation and locationForBranchIndex map correctly', () {
+      expect(AppShell.branchIndexForLocation('/'), 0);
+      expect(AppShell.branchIndexForLocation('/?q=test'), 0);
+      expect(AppShell.branchIndexForLocation('/search'), 1);
+      expect(AppShell.branchIndexForLocation('/favorites'), 2);
+      expect(AppShell.branchIndexForLocation('/viewed'), 3);
+      expect(AppShell.branchIndexForLocation('/collections'), 4);
+      expect(AppShell.branchIndexForLocation('/collections/123'), 4);
+      expect(AppShell.branchIndexForLocation('/artists'), 5);
+      expect(AppShell.branchIndexForLocation('/artists/pawchive/patreon/99'), 5);
+      expect(AppShell.branchIndexForLocation('/providers'), 6);
+      expect(AppShell.branchIndexForLocation('/settings'), 7);
+      expect(AppShell.branchIndexForLocation('/settings/hidden'), 7);
+
+      expect(AppShell.locationForBranchIndex(0), '/');
+      expect(AppShell.locationForBranchIndex(1), '/search');
+      expect(AppShell.locationForBranchIndex(2), '/favorites');
+      expect(AppShell.locationForBranchIndex(3), '/viewed');
+      expect(AppShell.locationForBranchIndex(4), '/collections');
+      expect(AppShell.locationForBranchIndex(5), '/artists');
+      expect(AppShell.locationForBranchIndex(6), '/providers');
+      expect(AppShell.locationForBranchIndex(7), '/settings');
+    });
+
+    test('AppSettings preserves lastActiveLocation in JSON serialization', () {
+      const defaults = AppSettings.defaults;
+      expect(defaults.lastActiveLocation, '/');
+
+      final updated = defaults.copyWith(lastActiveLocation: '/artists/pawchive/patreon/12345');
+      expect(updated.lastActiveLocation, '/artists/pawchive/patreon/12345');
+
+      final json = updated.toJson();
+      expect(json['lastActiveLocation'], '/artists/pawchive/patreon/12345');
+
+      final restored = AppSettings.fromJson(json);
+      expect(restored.lastActiveLocation, '/artists/pawchive/patreon/12345');
+    });
+  });
+}