feat: 添加 LDAP 认证支持

- 新增 LDAP 服务和 API 接口
- 添加 LDAP 配置管理页面
- 登录页面支持 LDAP/本地认证切换
- 数据库迁移支持 LDAP 相关字段

frontend/src/api/admin.ts

@@ -160,6 +160,44 @@ export interface EmailTemplateResetResponse {
   }
 }
 
+// LDAP 配置响应
+export interface LdapConfigResponse {
+  server_url: string | null
+  bind_dn: string | null
+  base_dn: string | null
+  has_bind_password: boolean
+  user_search_filter: string
+  username_attr: string
+  email_attr: string
+  display_name_attr: string
+  is_enabled: boolean
+  is_exclusive: boolean
+  use_starttls: boolean
+  connect_timeout: number
+}
+
+// LDAP 配置更新请求
+export interface LdapConfigUpdateRequest {
+  server_url: string
+  bind_dn: string
+  bind_password?: string
+  base_dn: string
+  user_search_filter?: string
+  username_attr?: string
+  email_attr?: string
+  display_name_attr?: string
+  is_enabled?: boolean
+  is_exclusive?: boolean
+  use_starttls?: boolean
+  connect_timeout?: number
+}
+
+// LDAP 连接测试响应
+export interface LdapTestResponse {
+  success: boolean
+  message: string
+}
+
 // Provider 模型查询响应
 export interface ProviderModelsQueryResponse {
   success: boolean
@@ -487,5 +525,27 @@ export const adminApi = {
       '/api/admin/system/version'
     )
     return response.data
+  },
+
+  // LDAP 配置相关
+  // 获取 LDAP 配置
+  async getLdapConfig(): Promise<LdapConfigResponse> {
+    const response = await apiClient.get<LdapConfigResponse>('/api/admin/ldap/config')
+    return response.data
+  },
+
+  // 更新 LDAP 配置
+  async updateLdapConfig(config: LdapConfigUpdateRequest): Promise<{ message: string }> {
+    const response = await apiClient.put<{ message: string }>(
+      '/api/admin/ldap/config',
+      config
+    )
+    return response.data
+  },
+
+  // 测试 LDAP 连接
+  async testLdapConnection(config: LdapConfigUpdateRequest): Promise<LdapTestResponse> {
+    const response = await apiClient.post<LdapTestResponse>('/api/admin/ldap/test', config)
+    return response.data
   }
 }

frontend/src/api/auth.ts

@@ -4,6 +4,7 @@ import { log } from '@/utils/logger'
 export interface LoginRequest {
   email: string
   password: string
+  auth_type?: 'local' | 'ldap'
 }
 
 export interface LoginResponse {
@@ -81,6 +82,12 @@ export interface RegistrationSettingsResponse {
   require_email_verification: boolean
 }
 
+export interface AuthSettingsResponse {
+  local_enabled: boolean
+  ldap_enabled: boolean
+  ldap_exclusive: boolean
+}
+
 export interface User {
   id: string // UUID
   username: string
@@ -173,5 +180,10 @@ export const authApi = {
       { email }
     )
     return response.data
+  },
+
+  async getAuthSettings(): Promise<AuthSettingsResponse> {
+    const response = await apiClient.get<AuthSettingsResponse>('/api/auth/settings')
+    return response.data
   }
 }