feat: 实现 Auth 全局状态机与 401 统一处理机制

- 新增 AuthSessionInvalidated 事件处理 token 失效场景
- ApiInterceptor 新增 authFailureCallback 单飞机制
- AuthBloc 区分 manual logout 与 auto expiry 语义
- 新增 startup recovery fallback 防止启动卡死

feat: 重构 Calendar DayWeek 视图事件布局引擎

- 新增 DayEventLayoutEngine 解耦事件计算与渲染
- 新增 DayTimelineMetrics 统一时间轴常量
- 新增 DayViewScale 支持捏合缩放

feat: 新增 Settings 页面共享 UI 组件

- 新增 BackTitlePageHeader 统一页面 header
- 新增 DetailHeaderActionMenu 统一操作菜单
- 新增 DestructiveActionSheet 统一删除确认
- 新增 AppToggleSwitch 统一开关组件

feat: Chat UI Schema 支持导航操作

- 支持 navigation 类型 action 触发内部路由跳转
- 新增路径验证与参数处理

chore: 更新相关测试覆盖 auth 失效路径

apps/lib/features/chat/ui/widgets/ui_schema_renderer.dart

@@ -1,4 +1,5 @@
 import 'package:flutter/material.dart';
+import 'package:go_router/go_router.dart';
 
 import 'package:social_app/core/theme/design_tokens.dart';
 import 'package:social_app/shared/widgets/toast/toast.dart';
@@ -168,12 +169,7 @@ class UiSchemaRenderer {
           onPressed: disabled
               ? null
               : () {
-                  final actionType = _asString(action?['type']);
-                  if (actionType == 'copy') {
-                    Toast.show(context, '已复制', type: ToastType.success);
-                  } else {
-                    Toast.show(context, '该操作暂未接入', type: ToastType.info);
-                  }
+                  _handleAction(context, action);
                 },
           style: ElevatedButton.styleFrom(
             elevation: 0,
@@ -203,6 +199,85 @@ class UiSchemaRenderer {
     );
   }
 
+  static void _handleAction(
+    BuildContext context,
+    Map<String, dynamic>? action,
+  ) {
+    final actionType = _asString(action?['type']);
+    switch (actionType) {
+      case 'copy':
+        Toast.show(context, '已复制', type: ToastType.success);
+        return;
+      case 'navigation':
+        _handleNavigationAction(context, action);
+        return;
+      default:
+        Toast.show(context, '该操作暂未接入', type: ToastType.info);
+        return;
+    }
+  }
+
+  static void _handleNavigationAction(
+    BuildContext context,
+    Map<String, dynamic>? action,
+  ) {
+    if (action == null) {
+      Toast.show(context, '导航参数无效', type: ToastType.warning);
+      return;
+    }
+
+    final path = _asString(action['path']).trim();
+    if (!_isValidInternalPath(path)) {
+      Toast.show(context, '导航路径无效', type: ToastType.warning);
+      return;
+    }
+
+    final params = _asMap(action['params']);
+    final queryParams = _extractNavigationQueryParams(params);
+    try {
+      final baseUri = Uri.parse(path);
+      final mergedQueryParams = {...baseUri.queryParameters, ...queryParams};
+      final targetUri = baseUri.replace(
+        queryParameters: mergedQueryParams.isEmpty ? null : mergedQueryParams,
+      );
+      context.go(targetUri.toString());
+    } on FormatException {
+      Toast.show(context, '导航路径无效', type: ToastType.warning);
+    }
+  }
+
+  static bool _isValidInternalPath(String path) {
+    if (path.isEmpty || !path.startsWith('/')) {
+      return false;
+    }
+    if (path.startsWith('//') || path.contains('://')) {
+      return false;
+    }
+    if (path.contains('?') || path.contains('#') || path.contains(':')) {
+      return false;
+    }
+    return true;
+  }
+
+  static Map<String, String> _extractNavigationQueryParams(
+    Map<String, dynamic>? params,
+  ) {
+    if (params == null || params.isEmpty) {
+      return const {};
+    }
+    final query = <String, String>{};
+    params.forEach((key, value) {
+      if (value is String && value.isNotEmpty) {
+        query[key] = value;
+        return;
+      }
+      if (value is num || value is bool) {
+        query[key] = value.toString();
+      }
+    });
+    return query;
+  }
+
   static Widget _renderKv(Map<String, dynamic> node) {
     final items = _asList(
       node['items'],