feat(recommend): 新增推荐频道页并恢复首页沉浸式信息流

- tab1 推荐页改为接口分类频道：频道导航可横滑，选中频道自动滚动到可视区，内容区左右滑动切换分类
- 精选频道：顶部固定高度 banner 轮播图 + 接口 tag 筛选的上新短剧横滑 + 其余短剧双列网格；其他分类三列网格
- 分类内容支持懒加载、下拉刷新与上拉分页加载
- 卡片角标文案与背景色取自接口 tag/tagColor，短剧标题统一白色
- 恢复 tab0 为沉浸式全屏视频首页及其三 inner-tab 顶导（搜索/礼物入口）
- l10n 新增原创出品、立即观看、上新、编辑精选、全N集等多语言文案

lib/pages/home/home_view.dart

@@ -12,7 +12,6 @@ import '../../core/data/services/home_feed_controller.dart';
 import '../../core/data/services/catalog_controller.dart';
 import '../../core/data/services/category_controller.dart';
 import '../../core/data/services/favorite_controller.dart';
-import '../../core/data/services/wallet_controller.dart';
 import '../../core/platform/haptics.dart';
 import '../../core/theme/app_colors.dart';
 import '../../core/theme/app_theme.dart';
@@ -20,16 +19,13 @@ import '../../core/widgets/auth_gate.dart';
 import '../../core/widgets/app_root_tab.dart';
 import '../discover/search_page.dart';
 import '../following/following_page.dart';
-import '../filter/filter_page.dart';
 import '../mine/mine_types.dart';
 import '../recommend/recommend_page.dart';
+import '../recommend/recommend_discover_page.dart';
 import '../mine/mine_view.dart';
-import '../store/vip_page.dart';
 import '../wallet/wallet_page.dart';
 import 'home_binding.dart';
 import 'home_logic.dart';
-import 'widgets/home_feed_grid.dart';
-import 'widgets/home_grid_header.dart';
 
 class HomePage extends StatefulWidget {
   const HomePage({super.key});
@@ -176,8 +172,8 @@ class _HomeTabsState extends State<_HomeTabs> {
 
   Widget _body(BuildContext context) {
     final pages = <Widget>[
-      _homeGrid(context),
       _recommend(context),
+      _recommendDiscover(context),
       FollowingPage(
         onGoHome: () => logic.select(0),
         favoriteController: context.read<FavoriteController>(),
@@ -194,27 +190,23 @@ class _HomeTabsState extends State<_HomeTabs> {
     );
   }
 
-  Widget _homeGrid(BuildContext context) {
-    return HomeFeedGrid(
-      feedController: widget.feedController,
-      callbacks: HomeGridCallbacks(
-        onSearch: () => _openSearch(context),
-        onOpenVip: () => unawaited(_openVip(context)),
-        onOpenWallet: () => unawaited(_openWallet(context)),
-        onOpenFilter: () => _pushPage(context, const FilterPage()),
-      ),
-      onOpenDrama: (drama) => unawaited(logic.playDrama(context, drama)),
-    );
-  }
-
   Widget _recommend(BuildContext context) {
     return RecommendPage(
       feedController: widget.feedController,
       catalogApi: _catalogApi(context),
-      active: logic.tab == 1,
+      active: logic.tab == 0,
       videoOnly: logic.videoImmersive,
       onImmersiveChanged: logic.onImmersiveChanged,
       onSearch: () => _openSearch(context),
+      onOpenWallet: () => unawaited(_openWallet(context)),
+    );
+  }
+
+  Widget _recommendDiscover(BuildContext context) {
+    return RecommendDiscoverPage(
+      active: logic.tab == 1,
+      onSearch: () => _openSearch(context),
+      onOpenWallet: () => unawaited(_openWallet(context)),
     );
   }
 
@@ -232,20 +224,6 @@ class _HomeTabsState extends State<_HomeTabs> {
     ).push<void>(MaterialPageRoute(builder: (_) => const SearchPage()));
   }
 
-  void _pushPage(BuildContext context, Widget page) {
-    Navigator.of(context).push<void>(MaterialPageRoute(builder: (_) => page));
-  }
-
-  Future<void> _openVip(BuildContext context) async {
-    if (!await ensureSignedIn(context) || !context.mounted) return;
-    final wallet = context.read<WalletController>();
-    await Navigator.of(context).push<void>(
-      MaterialPageRoute(
-        builder: (_) => VipPage(onPurchased: () => unawaited(wallet.load())),
-      ),
-    );
-  }
-
   Future<void> _openWallet(BuildContext context) async {
     if (!await ensureSignedIn(context) || !context.mounted) return;
     await Navigator.of(

lib/pages/home/widgets/home_feed_card.dart

@@ -50,7 +50,7 @@ class HomeFeedCard extends StatelessWidget {
                       overflow: TextOverflow.ellipsis,
                       textAlign: TextAlign.left,
                       style: const TextStyle(
-                        color: AppColors.navSelected,
+                        color: AppColors.textPrimary,
                         fontSize: AppDimens.cardTitleFont,
                         fontWeight: FontWeight.w500,
                         height: AppDimens.cardTitleLineHeight,