feat(app): 完善播放协议搜索与空状态

test/core/legal_page_test.dart

@@ -0,0 +1,27 @@
+// Author: fruit.com.cn
+
+import 'package:flutter/material.dart';
+import 'package:flutter_test/flutter_test.dart';
+import 'package:fruitshorts/core/config/app_config.dart';
+import 'package:fruitshorts/core/legal/legal_page.dart';
+
+void main() {
+  tearDown(AppConfig.clearRuntimeBaseUrl);
+
+  test('should_build_language_page_when_locale_is_supported', () {
+    AppConfig.applyRuntimeBaseUrl('http://192.168.31.243:8081');
+
+    expect(
+      legalPageUrl(legalPrivacyPath, const Locale('zh')),
+      'http://192.168.31.243:8081/privacy/zh',
+    );
+    expect(
+      legalPageUrl(legalTermsPath, const Locale('id')),
+      'http://192.168.31.243:8081/terms/id',
+    );
+    expect(
+      legalPageUrl(legalPrivacyPath, const Locale('fr')),
+      'http://192.168.31.243:8081/privacy/en',
+    );
+  });
+}

test/core/legal_web_page_test.dart

@@ -0,0 +1,33 @@
+// Author: fruit.com.cn
+
+import 'package:flutter/material.dart';
+import 'package:flutter_test/flutter_test.dart';
+import 'package:fruitshorts/core/legal/legal_html.dart';
+import 'package:fruitshorts/core/legal/legal_web_page.dart';
+import 'package:fruitshorts/l10n/app_localizations.dart';
+
+void main() {
+  test('should_keep_article_body_when_page_wraps_html', () {
+    const html = '<html><body><main><article><p>第一行</p></article></main></body></html>';
+
+    expect(legalArticle(html), '<p>第一行</p>');
+  });
+
+  testWidgets('should_show_agreement_text_when_page_loads', (tester) async {
+    await tester.pumpWidget(
+      MaterialApp(
+        locale: const Locale('zh'),
+        localizationsDelegates: AppLocalizations.localizationsDelegates,
+        supportedLocales: AppLocalizations.supportedLocales,
+        home: LegalWebPage(
+          url: 'http://example.test/privacy/zh',
+          load: (_) async => '<p>协议正文</p>',
+        ),
+      ),
+    );
+    await tester.pumpAndSettle();
+
+    expect(find.text('协议正文'), findsOneWidget);
+    expect(find.byKey(const Key('legal-web-loading')), findsNothing);
+  });
+}

test/core/subpage_header_test.dart

@@ -97,8 +97,8 @@ void main() {
     );
     expect(material.color, AppColors.headerScrim);
     expect(icon.color, AppColors.onSurface);
-    expect(icon.size, 22);
-    expect(icon.weight, 600);
+    expect(icon.size, 34);
+    expect(icon.weight, 400);
     final shadow =
         tester
                 .widget<DecoratedBox>(