fix: 修复 FAB 滚动隐藏功能在页面切换后失效的问题

lib/routing/router.dart

@@ -70,15 +70,6 @@ GoRouter router(SettingsRepository settingsRepository) => GoRouter(
               final title =
                   _getTitleForRoute(state.fullPath ?? state.matchedLocation);
 
-              // 检查是否为书签列表页面，需要显示FAB
-              final isBookmarkListRoute = [
-                Routes.dailyRead,
-                Routes.unarchived,
-                Routes.reading,
-                Routes.archived,
-                Routes.marked,
-              ].contains(state.fullPath ?? state.matchedLocation);
-
               // 从设置页返回，跳转首页
               if ((state.fullPath ?? state.matchedLocation) ==
                   Routes.settings) {
@@ -95,9 +86,22 @@ GoRouter router(SettingsRepository settingsRepository) => GoRouter(
                 );
               }
 
+              // 书签列表页面不被 MainLayout 包装，它们自己管理 UI
+              final selfManagedRoutes = [
+                Routes.dailyRead,
+                Routes.unarchived,
+                Routes.reading,
+                Routes.archived,
+                Routes.marked,
+              ];
+
+              if (selfManagedRoutes
+                  .contains(state.fullPath ?? state.matchedLocation)) {
+                return child;
+              }
+
               return MainLayout(
                 title: title,
-                showFab: isBookmarkListRoute,
                 child: child,
               );
             },

lib/ui/bookmarks/widget/archived_screen.dart

@@ -1,22 +1,48 @@
 import 'package:flutter/material.dart';
 import 'package:readeck_app/ui/bookmarks/view_models/bookmarks_viewmodel.dart';
 import 'package:readeck_app/ui/bookmarks/widget/bookmark_list_screen.dart';
+import 'package:readeck_app/ui/core/main_layout.dart';
 
-class ArchivedScreen extends StatelessWidget {
+class ArchivedScreen extends StatefulWidget {
   const ArchivedScreen({super.key, required this.viewModel});
 
   final ArchivedViewmodel viewModel;
 
+  @override
+  State<ArchivedScreen> createState() => _ArchivedScreenState();
+}
+
+class _ArchivedScreenState extends State<ArchivedScreen> {
+  late final ScrollController _scrollController;
+
+  @override
+  void initState() {
+    super.initState();
+    _scrollController = ScrollController();
+  }
+
+  @override
+  void dispose() {
+    _scrollController.dispose();
+    super.dispose();
+  }
+
   @override
   Widget build(BuildContext context) {
-    return BookmarkListScreen(
-      viewModel: viewModel,
-      texts: const BookmarkListTexts(
-        loadingText: '正在加载已归档书签',
-        errorMessage: '已归档书签加载失败',
-        emptyIcon: Icons.archive_outlined,
-        emptyTitle: '暂无已归档书签',
-        emptySubtitle: '归档的书签将在这里显示',
+    return MainLayout(
+      title: '已归档',
+      showFab: true,
+      scrollController: _scrollController,
+      child: BookmarkListScreen(
+        viewModel: widget.viewModel,
+        scrollController: _scrollController,
+        texts: const BookmarkListTexts(
+          loadingText: '正在加载已归档书签',
+          errorMessage: '已归档书签加载失败',
+          emptyIcon: Icons.archive_outlined,
+          emptyTitle: '暂无已归档书签',
+          emptySubtitle: '归档的书签将在这里显示',
+        ),
       ),
     );
   }

lib/ui/bookmarks/widget/bookmark_list_screen.dart

@@ -10,7 +10,6 @@ import 'package:readeck_app/ui/core/ui/loading.dart';
 import 'package:readeck_app/ui/bookmarks/view_models/bookmarks_viewmodel.dart';
 import 'package:readeck_app/utils/network_error_exception.dart';
 import 'package:readeck_app/ui/core/ui/snack_bar_helper.dart';
-import 'package:readeck_app/ui/core/main_layout.dart';
 
 /// 书签列表页面的文案配置
 class BookmarkListTexts {
@@ -45,10 +44,12 @@ class BookmarkListScreen<T extends BaseBookmarksViewmodel>
     super.key,
     required this.viewModel,
     required this.texts,
+    this.scrollController,
   });
 
   final T viewModel;
   final BookmarkListTexts texts;
+  final ScrollController? scrollController;
 
   @override
   State<BookmarkListScreen<T>> createState() => _BookmarkListScreenState<T>();
@@ -57,6 +58,7 @@ class BookmarkListScreen<T extends BaseBookmarksViewmodel>
 class _BookmarkListScreenState<T extends BaseBookmarksViewmodel>
     extends State<BookmarkListScreen<T>> {
   ScrollController? _scrollController;
+  bool _ownsController = false;
   late final ListenableSubscription _deleteSuccessSubscription;
 
   @override
@@ -92,37 +94,37 @@ class _BookmarkListScreenState<T extends BaseBookmarksViewmodel>
   void didChangeDependencies() {
     super.didChangeDependencies();
 
-    // 只有在没有外部提供ScrollController时才创建自己的
+    // 使用外部提供的 ScrollController 或创建自己的（仅首次绑定）
     if (_scrollController == null) {
-      _scrollController = ScrollController();
-      _scrollController?.addListener(_onScroll);
-
-      // 延迟到下一帧更新Provider，避免在build过程中触发rebuild
-      WidgetsBinding.instance.addPostFrameCallback((_) {
-        if (mounted) {
-          try {
-            final provider = context.read<ScrollControllerProvider?>();
-            provider?.setScrollController(_scrollController);
-          } catch (e) {
-            // 在测试环境中可能会失败，忽略
-          }
-        }
-      });
+      _scrollController = widget.scrollController ?? ScrollController();
+      _scrollController!.addListener(_onScroll);
+      _ownsController = widget.scrollController == null;
     }
   }
 
   @override
-  void dispose() {
-    // 清除Provider中的ScrollController引用
-    try {
-      final provider = context.read<ScrollControllerProvider?>();
-      provider?.setScrollController(null);
-    } catch (e) {
-      // 在测试或context已失效时忽略错误
+  void didUpdateWidget(covariant BookmarkListScreen<T> oldWidget) {
+    super.didUpdateWidget(oldWidget);
+    if (oldWidget.scrollController != widget.scrollController) {
+      // 解绑旧
+      _scrollController?.removeListener(_onScroll);
+      if (_ownsController) {
+        _scrollController?.dispose();
+      }
+      // 绑定新
+      _scrollController = widget.scrollController ?? ScrollController();
+      _ownsController = widget.scrollController == null;
+      _scrollController!.addListener(_onScroll);
     }
+  }
 
+  @override
+  void dispose() {
     _scrollController?.removeListener(_onScroll);
-    _scrollController?.dispose();
+    // 只有自己创建的 ScrollController 才需要 dispose
+    if (_ownsController) {
+      _scrollController?.dispose();
+    }
     _deleteSuccessSubscription.cancel();
     super.dispose();
   }

lib/ui/bookmarks/widget/marked_screen.dart

@@ -1,22 +1,48 @@
 import 'package:flutter/material.dart';
 import 'package:readeck_app/ui/bookmarks/view_models/bookmarks_viewmodel.dart';
 import 'package:readeck_app/ui/bookmarks/widget/bookmark_list_screen.dart';
+import 'package:readeck_app/ui/core/main_layout.dart';
 
-class MarkedScreen extends StatelessWidget {
+class MarkedScreen extends StatefulWidget {
   const MarkedScreen({super.key, required this.viewModel});
 
   final MarkedViewmodel viewModel;
 
+  @override
+  State<MarkedScreen> createState() => _MarkedScreenState();
+}
+
+class _MarkedScreenState extends State<MarkedScreen> {
+  late final ScrollController _scrollController;
+
+  @override
+  void initState() {
+    super.initState();
+    _scrollController = ScrollController();
+  }
+
+  @override
+  void dispose() {
+    _scrollController.dispose();
+    super.dispose();
+  }
+
   @override
   Widget build(BuildContext context) {
-    return BookmarkListScreen(
-      viewModel: viewModel,
-      texts: const BookmarkListTexts(
-        loadingText: '正在加载喜爱书签',
-        errorMessage: '喜爱书签加载失败',
-        emptyIcon: Icons.favorite_outline,
-        emptyTitle: '暂无喜爱书签',
-        emptySubtitle: '标记为喜爱的书签将在这里显示',
+    return MainLayout(
+      title: '标记喜爱',
+      showFab: true,
+      scrollController: _scrollController,
+      child: BookmarkListScreen(
+        viewModel: widget.viewModel,
+        scrollController: _scrollController,
+        texts: const BookmarkListTexts(
+          loadingText: '正在加载喜爱书签',
+          errorMessage: '喜爱书签加载失败',
+          emptyIcon: Icons.favorite_outline,
+          emptyTitle: '暂无喜爱书签',
+          emptySubtitle: '标记为喜爱的书签将在这里显示',
+        ),
       ),
     );
   }

lib/ui/bookmarks/widget/reading_screen.dart

@@ -1,22 +1,48 @@
 import 'package:flutter/material.dart';
 import 'package:readeck_app/ui/bookmarks/view_models/bookmarks_viewmodel.dart';
 import 'package:readeck_app/ui/bookmarks/widget/bookmark_list_screen.dart';
+import 'package:readeck_app/ui/core/main_layout.dart';
 
-class ReadingScreen extends StatelessWidget {
+class ReadingScreen extends StatefulWidget {
   const ReadingScreen({super.key, required this.viewModel});
 
   final ReadingViewmodel viewModel;
 
+  @override
+  State<ReadingScreen> createState() => _ReadingScreenState();
+}
+
+class _ReadingScreenState extends State<ReadingScreen> {
+  late final ScrollController _scrollController;
+
+  @override
+  void initState() {
+    super.initState();
+    _scrollController = ScrollController();
+  }
+
+  @override
+  void dispose() {
+    _scrollController.dispose();
+    super.dispose();
+  }
+
   @override
   Widget build(BuildContext context) {
-    return BookmarkListScreen(
-      viewModel: viewModel,
-      texts: const BookmarkListTexts(
-        loadingText: '正在加载阅读中书签',
-        errorMessage: '阅读中书签加载失败',
-        emptyIcon: Icons.auto_stories_outlined,
-        emptyTitle: '暂无阅读中书签',
-        emptySubtitle: '下拉刷新或去Readeck开始阅读书签',
+    return MainLayout(
+      title: '阅读中',
+      showFab: true,
+      scrollController: _scrollController,
+      child: BookmarkListScreen(
+        viewModel: widget.viewModel,
+        scrollController: _scrollController,
+        texts: const BookmarkListTexts(
+          loadingText: '正在加载阅读中书签',
+          errorMessage: '阅读中书签加载失败',
+          emptyIcon: Icons.auto_stories_outlined,
+          emptyTitle: '暂无阅读中书签',
+          emptySubtitle: '下拉刷新或去Readeck开始阅读书签',
+        ),
       ),
     );
   }

lib/ui/bookmarks/widget/unarchived_screen.dart

@@ -1,22 +1,48 @@
 import 'package:flutter/material.dart';
 import 'package:readeck_app/ui/bookmarks/view_models/bookmarks_viewmodel.dart';
 import 'package:readeck_app/ui/bookmarks/widget/bookmark_list_screen.dart';
+import 'package:readeck_app/ui/core/main_layout.dart';
 
-class UnarchivedScreen extends StatelessWidget {
+class UnarchivedScreen extends StatefulWidget {
   const UnarchivedScreen({super.key, required this.viewModel});
 
   final UnarchivedViewmodel viewModel;
 
+  @override
+  State<UnarchivedScreen> createState() => _UnarchivedScreenState();
+}
+
+class _UnarchivedScreenState extends State<UnarchivedScreen> {
+  late final ScrollController _scrollController;
+
+  @override
+  void initState() {
+    super.initState();
+    _scrollController = ScrollController();
+  }
+
+  @override
+  void dispose() {
+    _scrollController.dispose();
+    super.dispose();
+  }
+
   @override
   Widget build(BuildContext context) {
-    return BookmarkListScreen(
-      viewModel: viewModel,
-      texts: const BookmarkListTexts(
-        loadingText: '正在加载未归档书签',
-        errorMessage: '未归档书签加载失败',
-        emptyIcon: Icons.inbox_outlined,
-        emptyTitle: '暂无未归档书签',
-        emptySubtitle: '下拉刷新或去Readeck添加新的书签',
+    return MainLayout(
+      title: '未读',
+      showFab: true,
+      scrollController: _scrollController,
+      child: BookmarkListScreen(
+        viewModel: widget.viewModel,
+        scrollController: _scrollController,
+        texts: const BookmarkListTexts(
+          loadingText: '正在加载未归档书签',
+          errorMessage: '未归档书签加载失败',
+          emptyIcon: Icons.inbox_outlined,
+          emptyTitle: '暂无未归档书签',
+          emptySubtitle: '下拉刷新或去Readeck添加新的书签',
+        ),
       ),
     );
   }