feat(home): 顶部导航随翻页联动并把推荐更名为精选

test/home/home_featured_label_test.dart

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+// Author: fruit.com.cn
+// 职责：首页顶部精选与底部推荐使用不同文案，覆盖支持的三种语言。
+import 'package:flutter/material.dart';
+import 'package:flutter_test/flutter_test.dart';
+import 'package:fruitshorts/core/widgets/app_root_tab.dart';
+import 'package:fruitshorts/l10n/app_localizations.dart';
+import 'package:fruitshorts/pages/recommend/recommend_types.dart';
+import 'package:fruitshorts/pages/recommend/widgets/recommend_top_nav.dart';
+
+const _labels = [
+  ('zh', '精选', '推荐', '剧单', '全部短剧'),
+  ('en', 'Featured', 'Recommend', 'Playlists', 'All Dramas'),
+  ('id', 'Unggulan', 'Rekomendasi', 'Daftar Putar', 'Semua'),
+];
+
+void main() {
+  for (final (language, featured, recommend, playlists, all) in _labels) {
+    testWidgets(
+      'should_distinguish_featured_from_recommend_when_locale_is_$language',
+      (tester) async {
+        await tester.pumpWidget(_host(language));
+        await tester.pumpAndSettle();
+        final top = find.byKey(const Key('recommend-top-nav'));
+        final bottom = find.byKey(const Key('tab-recommend'));
+        expect(
+          find.descendant(of: top, matching: find.text(featured)),
+          findsOneWidget,
+        );
+        expect(
+          find.descendant(of: top, matching: find.text(recommend)),
+          findsNothing,
+        );
+        expect(
+          find.descendant(of: bottom, matching: find.text(recommend)),
+          findsOneWidget,
+        );
+        expect(
+          find.descendant(of: top, matching: find.text(playlists)),
+          findsOneWidget,
+        );
+        expect(
+          find.descendant(of: top, matching: find.text(all)),
+          findsOneWidget,
+        );
+        expect(tester.takeException(), isNull);
+      },
+    );
+  }
+}
+
+Widget _host(String language) => MaterialApp(
+  locale: Locale(language),
+  localizationsDelegates: AppLocalizations.localizationsDelegates,
+  supportedLocales: AppLocalizations.supportedLocales,
+  home: Scaffold(
+    body: RecommendTopNav(
+      selected: RecommendInnerTab.feed,
+      onSelected: (_) {},
+      onSearch: () {},
+    ),
+    bottomNavigationBar: AppRootBottomNav(
+      selected: AppRootTab.home,
+      onSelected: (_) {},
+    ),
+  ),
+);