chore: 完成项目品牌域名批量替换与功能迭代

本次提交包含多项核心更新：
1. 全量替换项目内所有xianyan.app域名变更为s2ss.com，包含配置文件、路由、隐私政策等
2. 重构图表库从fl_chart迁移至syncfusion_flutter_charts，优化图表渲染效果
3. 新增宽屏分屏布局支持，包含右侧面板注册表与可拖拽分割线
4. 完善触觉反馈服务与认证感知Mixin，修复多处内存泄漏问题
5. 合并勋章墙与金币记录入口至成就中心，简化个人中心导航
6. 新增收藏与时间线数据合并导入功能
7. 修复多处UI样式问题，统一主题颜色使用规范
8. 新增日历同步与跨平台触觉反馈依赖库
9. 修复BotToast初始化流程，避免路由切换时的弹窗崩溃

lib/features/auth/presentation/login_page.dart

@@ -253,8 +253,8 @@ class _LoginPageState extends ConsumerState<LoginPage>
                       ? _handleLogin
                       : null,
                   child: authState.isLoading
-                      ? const CupertinoActivityIndicator(
-                          color: CupertinoColors.white,
+                      ? CupertinoActivityIndicator(
+                          color: ext.textOnAccent,
                         )
                       : Row(
                           mainAxisAlignment: MainAxisAlignment.center,
@@ -263,13 +263,13 @@ class _LoginPageState extends ConsumerState<LoginPage>
                             Icon(
                               _loginModeIcon,
                               size: 16,
-                              color: CupertinoColors.white,
+                              color: ext.textOnAccent,
                             ),
                             const SizedBox(width: 6),
                             Text(
                               _loginModeButtonText,
                               style: AppTypography.callout.copyWith(
-                                color: CupertinoColors.white,
+                                color: ext.textOnAccent,
                                 fontWeight: FontWeight.w600,
                               ),
                             ),
@@ -639,10 +639,10 @@ class _LoginPageState extends ConsumerState<LoginPage>
                     ),
                   ),
                   child: _agreedToTerms
-                      ? const Icon(
+                      ? Icon(
                           CupertinoIcons.checkmark,
                           size: 13,
-                          color: CupertinoColors.white,
+                          color: ext.textOnAccent,
                         )
                       : null,
                 ),

lib/features/auth/services/user_security_service.dart

@@ -1,9 +1,9 @@
 /// ============================================================
 /// 闲言APP — 用户安全服务
 /// 创建时间: 2026-04-29
-/// 更新时间: 2026-05-15
+/// 更新时间: 2026-05-29
 /// 作用: 用户安全相关API封装（登录/注册/密码/邮箱/手机/回执验证/第三方/二维码登录/密保问题）
-/// 上次更新: v10.1.0 新增密保问题接口+多验证方式支持
+/// 上次更新: changeEmail/changeMobile新增password验证方式支持
 /// ============================================================
 
 import 'dart:convert';
@@ -424,12 +424,12 @@ class UserSecurityService {
   // 邮箱/手机变更 (回执验证)
   // ============================================================
 
-  /// 修改邮箱 (需登录，支持回执/密保验证)
+  /// 修改邮箱 (需登录，支持回执/密保/密码验证)
   static Future<void> changeEmail({
     required String email,
     String verifyMethod = 'receipt',
     String? secAnswer,
-    String? userId,
+    String? password,
   }) async {
     try {
       final data = <String, dynamic>{
@@ -444,6 +444,15 @@ class UserSecurityService {
           }
           data['sec_answer'] = secAnswer;
           break;
+        case 'password':
+          if (password == null || password.isEmpty) {
+            throw const ApiException(code: 0, message: '请输入密码');
+          }
+          data['oldpassword'] = password;
+          final receipt = ReceiptHelper.generate(ReceiptAction.changeemail, email);
+          data['receipt'] = receipt.receipt;
+          data['sig'] = receipt.sig;
+          break;
         case 'receipt':
         default:
           final receipt = ReceiptHelper.generate(ReceiptAction.changeemail, email);
@@ -468,21 +477,49 @@ class UserSecurityService {
     }
   }
 
-  /// 修改手机号 (需登录，回执验证)
-  static Future<void> changeMobile({required String mobile}) async {
+  /// 修改手机号 (需登录，支持回执/密保/密码验证)
+  static Future<void> changeMobile({
+    required String mobile,
+    String verifyMethod = 'receipt',
+    String? secAnswer,
+    String? password,
+  }) async {
     try {
-      final receipt = ReceiptHelper.generate(
-        ReceiptAction.changemobile,
-        mobile,
-      );
+      final data = <String, dynamic>{
+        'mobile': mobile,
+        'verify_method': verifyMethod,
+      };
+
+      switch (verifyMethod) {
+        case 'sec_question':
+          if (secAnswer == null || secAnswer.isEmpty) {
+            throw const ApiException(code: 0, message: '请输入密保答案');
+          }
+          data['sec_answer'] = secAnswer;
+          break;
+        case 'password':
+          if (password == null || password.isEmpty) {
+            throw const ApiException(code: 0, message: '请输入密码');
+          }
+          data['oldpassword'] = password;
+          final receipt = ReceiptHelper.generate(ReceiptAction.changemobile, mobile);
+          data['receipt'] = receipt.receipt;
+          data['sig'] = receipt.sig;
+          break;
+        case 'receipt':
+        default:
+          final receipt = ReceiptHelper.generate(
+            ReceiptAction.changemobile,
+            mobile,
+          );
+          data['receipt'] = receipt.receipt;
+          data['sig'] = receipt.sig;
+          break;
+      }
 
       final response = await _api.post<Map<String, dynamic>>(
         '$_basePath/changemobile',
-        data: {
-          'mobile': mobile,
-          'receipt': receipt.receipt,
-          'sig': receipt.sig,
-        },
+        data: data,
       );
       final apiResp = ApiResponse<Map<String, dynamic>>.fromJson(
         response.data as Map<String, dynamic>,