fix(recommend): 稳定进度拖动与清屏状态

lib/pages/home/home_logic.dart

@@ -23,6 +23,7 @@ class HomeLogic extends ChangeNotifier {
   bool drawerOpen = false;
   bool detailOpen = false;
   bool videoImmersive = false;
+  bool scrubHidden = false;
   bool _dramaNotifyScheduled = false;
   bool _disposed = false;
 
@@ -144,6 +145,12 @@ class HomeLogic extends ChangeNotifier {
     notify();
   }
 
+  void onScrubVisibilityChanged(bool value) {
+    if (scrubHidden == value) return;
+    scrubHidden = value;
+    notify();
+  }
+
   @override
   void dispose() {
     _disposed = true;

lib/pages/home/home_view.dart

@@ -239,7 +239,15 @@ class _HomeTabsState extends State<_HomeTabs> {
         backgroundColor: AppColors.transparent,
         resizeToAvoidBottomInset: false,
         body: _body(context),
-        bottomNavigationBar: logic.videoImmersive ? null : _nav(context),
+        bottomNavigationBar: logic.videoImmersive
+            ? null
+            : Visibility(
+                visible: !logic.scrubHidden,
+                maintainSize: true,
+                maintainAnimation: true,
+                maintainState: true,
+                child: _nav(context),
+              ),
       ),
     );
     return AnnotatedRegion<SystemUiOverlayStyle>(
@@ -288,7 +296,7 @@ class _HomeTabsState extends State<_HomeTabs> {
       active: logic.tab == 1,
       onSearch: () => _openSearch(context),
       onOpenFilter: () => _pushPage(context, const FilterPage()),
-      onScrubVisibilityChanged: logic.onImmersiveChanged,
+      onScrubVisibilityChanged: logic.onScrubVisibilityChanged,
     );
   }