refactor(client): widgets 颜色迁移到 context.tokens

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>

client/test/readonly_write_forbidden_test.dart

@@ -8,6 +8,7 @@ import 'package:jiu_client/core/api/api_client.dart';
 import 'package:jiu_client/core/auth/auth_state.dart';
 import 'package:jiu_client/core/config/license_copy.dart';
 import 'package:jiu_client/core/models/page_result.dart';
+import 'package:jiu_client/core/theme/themes.dart';
 import 'package:jiu_client/models/license.dart';
 import 'package:jiu_client/models/partner.dart';
 import 'package:jiu_client/providers/license_provider.dart';
@@ -76,7 +77,7 @@ Widget _buildApp({required bool readonly}) {
         ),
       ),
     ],
-    child: const MaterialApp(home: Scaffold(body: PartnersScreen())),
+    child: MaterialApp(theme: buildTheme('a'), home: const Scaffold(body: PartnersScreen())),
   );
 }