refactor: 重构前端 UI 组件与后端 AgentScope schemas

apps/lib/features/contacts/ui/screens/add_contact_screen.dart

@@ -3,6 +3,9 @@ import 'package:go_router/go_router.dart';
 import '../../../../core/theme/design_tokens.dart';
 import '../../../../shared/widgets/page_header.dart' as widgets;
 import '../../../../shared/widgets/app_input.dart';
+import '../../../../shared/widgets/link_button.dart';
+import '../../../../shared/widgets/toast/toast.dart';
+import '../../../../shared/widgets/toast/toast_type.dart';
 
 class AddContactScreen extends StatefulWidget {
   final String? contactId;
@@ -62,17 +65,24 @@ class _AddContactScreenState extends State<AddContactScreen> {
   }
 
   Widget _buildConfirmButton() {
-    return GestureDetector(
-      onTap: _handleConfirm,
-      child: Container(
-        width: 36,
-        height: 36,
-        decoration: BoxDecoration(
-          color: AppColors.surfaceInfo,
-          borderRadius: BorderRadius.circular(18),
-          border: Border.all(color: AppColors.borderQuaternary),
+    return SizedBox(
+      width: AppSpacing.xxl * 2,
+      height: AppSpacing.xxl * 2,
+      child: TextButton(
+        onPressed: _handleConfirm,
+        style: TextButton.styleFrom(
+          padding: const EdgeInsets.all(AppSpacing.none),
+          backgroundColor: AppColors.surfaceInfo,
+          shape: RoundedRectangleBorder(
+            borderRadius: BorderRadius.circular(AppRadius.full),
+            side: const BorderSide(color: AppColors.borderQuaternary),
+          ),
+        ),
+        child: const Icon(
+          Icons.check,
+          size: AppSpacing.lg,
+          color: AppColors.blue600,
         ),
-        child: const Icon(Icons.check, size: 16, color: AppColors.blue600),
       ),
     );
   }
@@ -83,7 +93,7 @@ class _AddContactScreenState extends State<AddContactScreen> {
         width: 72,
         height: 72,
         decoration: BoxDecoration(
-          color: const Color(0xFFF3F6FC),
+          color: AppColors.surfaceInfoLight,
           borderRadius: BorderRadius.circular(36),
           border: Border.all(color: Colors.transparent),
         ),
@@ -102,7 +112,7 @@ class _AddContactScreenState extends State<AddContactScreen> {
       decoration: BoxDecoration(
         color: AppColors.white,
         borderRadius: BorderRadius.circular(16),
-        border: Border.all(color: const Color(0xFFE3EAF6)),
+        border: Border.all(color: AppColors.messageCardBorder),
       ),
       child: Column(
         children: [
@@ -127,19 +137,12 @@ class _AddContactScreenState extends State<AddContactScreen> {
   }
 
   Widget _buildDeleteRow() {
-    return GestureDetector(
-      onTap: _handleDelete,
-      child: Container(
-        padding: const EdgeInsets.only(bottom: 8),
-        alignment: Alignment.center,
-        child: const Text(
-          '删除联系人',
-          style: TextStyle(
-            fontSize: 12,
-            fontWeight: FontWeight.w600,
-            color: AppColors.red600,
-          ),
-        ),
+    return Padding(
+      padding: const EdgeInsets.only(bottom: AppSpacing.sm),
+      child: LinkButton(
+        text: '删除联系人',
+        onTap: _handleDelete,
+        foregroundColor: AppColors.red600,
       ),
     );
   }
@@ -149,9 +152,7 @@ class _AddContactScreenState extends State<AddContactScreen> {
     final email = _emailController.text.trim();
 
     if (name.isEmpty || email.isEmpty) {
-      ScaffoldMessenger.of(
-        context,
-      ).showSnackBar(const SnackBar(content: Text('请填写昵称和邮箱')));
+      Toast.show(context, '请填写昵称和邮箱', type: ToastType.warning);
       return;
     }