feat: 完善鉴权和密码功能，添加飞书通知模块

- 完善Token过期/不存在时跳转登录重新认证
- 实现正常的账号密码登录验证（邮箱/手机号+密码）
- 用户初始化密码设为工号(sn)
- 添加修改密码功能（API+前端页面）
- 修复扫码登录后跳转问题（zustand persist格式）
- 创建飞书通知服务 FeishuNotificationService
- 设置页面添加修改密码入口

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

backend/app/util/FeishuUtil.php

@@ -50,7 +50,8 @@ class FeishuUtil
             ]);
 
             if ($response['code'] !== 0) {
-                throw new Exception('获取 app_access_token 失败: ' . ($response['msg'] ?? '未知错误'));
+                $errorMsg = $response['msg'] ?? $response['message'] ?? '未知错误';
+                throw new Exception('获取 app_access_token 失败: ' . $errorMsg);
             }
 
             $token = $response['tenant_access_token'];
@@ -109,7 +110,8 @@ class FeishuUtil
             error_log("📝 获取 user_access_token 响应: " . json_encode($response));
 
             if ($response['code'] !== 0) {
-                throw new Exception('获取 user_access_token 失败: ' . ($response['msg'] ?? '未知错误'));
+                $errorMsg = $response['msg'] ?? $response['message'] ?? '未知错误';
+                throw new Exception('获取 user_access_token 失败: ' . $errorMsg);
             }
 
             if (!isset($response['data']['access_token'])) {
@@ -149,7 +151,8 @@ class FeishuUtil
             error_log("📝 获取用户信息响应: " . json_encode($response));
 
             if ($response['code'] !== 0) {
-                throw new Exception('获取用户信息失败: ' . ($response['msg'] ?? '未知错误'));
+                $errorMsg = $response['msg'] ?? $response['message'] ?? '未知错误';
+                throw new Exception('获取用户信息失败: ' . $errorMsg);
             }
 
             $userInfo = $response['data'] ?? [];