feat(flutter): 新增剧场筛选页

lib/pages/discover/discover_view.dart

@@ -16,6 +16,7 @@ import '../../core/theme/app_theme.dart';
 import '../../core/widgets/app_bottom_nav.dart';
 import '../../core/widgets/empty_state.dart';
 import '../../l10n/app_localizations.dart';
+import '../filter/filter_page.dart';
 import '../new_releases/new_releases_page.dart';
 import '../player/open_player.dart';
 import '../ranking/ranking_page.dart';
@@ -261,7 +262,7 @@ class _DiscoverPageState extends State<DiscoverPage> {
         ? categories.feed.dramas
         : categories.dramasOf(logic.selectedCategoryId!);
     return [
-      _toolbar(l10n, categories),
+      _toolbar(l10n),
       if (dramas.isEmpty)
         Padding(
           padding: const EdgeInsets.symmetric(vertical: 40),
@@ -350,7 +351,7 @@ class _DiscoverPageState extends State<DiscoverPage> {
     );
   }
 
-  Widget _toolbar(AppLocalizations l10n, CategoryController categories) {
+  Widget _toolbar(AppLocalizations l10n) {
     return Padding(
       padding: const EdgeInsets.fromLTRB(14, 2, 14, 12),
       child: Row(
@@ -361,7 +362,7 @@ class _DiscoverPageState extends State<DiscoverPage> {
               icon: Icons.tune_rounded,
               color: _filterIconColor,
               label: l10n.filter,
-              onTap: () => _openFilterSheet(l10n, categories),
+              onTap: () => _openPage(context, const FilterPage()),
             ),
           ),
           const SizedBox(width: _toolbarGap),
@@ -443,43 +444,6 @@ class _DiscoverPageState extends State<DiscoverPage> {
     );
   }
 
-  Future<void> _openFilterSheet(
-    AppLocalizations l10n,
-    CategoryController categories,
-  ) async {
-    await showModalBottomSheet<void>(
-      context: context,
-      backgroundColor: AppColors.card,
-      showDragHandle: true,
-      builder: (sheetContext) => SafeArea(
-        child: ListView(
-          key: const Key('theater-filter-sheet'),
-          shrinkWrap: true,
-          padding: const EdgeInsets.only(bottom: 12),
-          children: [
-            ListTile(
-              key: const Key('theater-filter-option-all'),
-              title: Text(l10n.all),
-              onTap: () {
-                Navigator.pop(sheetContext);
-                logic.selectCategory(null);
-              },
-            ),
-            for (final category in categories.categories)
-              ListTile(
-                key: Key('theater-filter-option-${category.id}'),
-                title: Text(category.name),
-                onTap: () {
-                  Navigator.pop(sheetContext);
-                  logic.selectCategory(category.id);
-                },
-              ),
-          ],
-        ),
-      ),
-    );
-  }
-
   void _openPage(BuildContext context, Widget page) {
     Navigator.of(context).push<void>(MaterialPageRoute(builder: (_) => page));
   }