fix(search): 避免键盘顶起搜索页

lib/pages/discover/search_page.dart

@@ -35,9 +35,6 @@ class _SearchPageState extends State<SearchPage> {
     super.initState();
     _logic = DiscoverBinding().create(search: context.read<SearchRepository>());
     _logic.addListener(_rebuild);
-    WidgetsBinding.instance.addPostFrameCallback((_) {
-      if (mounted) _logic.searchFocus.requestFocus();
-    });
   }
 
   void _rebuild() {
@@ -59,10 +56,15 @@ class _SearchPageState extends State<SearchPage> {
       value: SystemUiOverlayStyle.light,
       child: Theme(
         data: AppTheme.dark(),
+        child: MediaQuery.removeViewInsets(
+          context: context,
+          removeBottom: true,
           child: Scaffold(
             key: const Key('search-page'),
             backgroundColor: AppColors.appBackground,
+            resizeToAvoidBottomInset: false,
             body: SafeArea(
+              bottom: false,
               child: Column(
                 children: [
                   _header(l10n),
@@ -78,6 +80,7 @@ class _SearchPageState extends State<SearchPage> {
             ),
           ),
         ),
+      ),
     );
   }
 
@@ -157,6 +160,7 @@ class _SearchPageState extends State<SearchPage> {
                 focusedBorder: InputBorder.none,
                 contentPadding: EdgeInsets.zero,
               ),
+              scrollPadding: EdgeInsets.zero,
             ),
           ),
           if (_logic.searchLoading)