refactor: support i18n

web/lib/api/admin.ts

@@ -1,6 +1,7 @@
 import { readSession } from "@/lib/auth"
 import { request } from "@/lib/api/client"
 import { createWebSocketBaseUrl } from "@/lib/api/websocket"
+import { translateCurrentMessage } from "@/i18n/messages"
 
 export type Paging = {
   page: number
@@ -576,7 +577,7 @@ function toQueryString(query?: Record<string, string | number | undefined>) {
 export function createAdminWebSocketUrl() {
   const session = readSession()
   if (!session?.accessToken) {
-    throw new Error("未登录或登录已过期")
+    throw new Error(translateCurrentMessage("api.authExpired"))
   }
 
   const baseUrl = createWebSocketBaseUrl()

web/lib/api/client.ts

@@ -1,4 +1,6 @@
 import { expireSession, readSession } from "@/lib/auth"
+import { readStoredLocale } from "@/i18n/config"
+import { translateCurrentMessage } from "@/i18n/messages"
 
 const API_BASE_URL =
   process.env.NEXT_PUBLIC_API_BASE_URL?.trim() || ""
@@ -22,7 +24,7 @@ async function parseResult<T>(response: Response) {
     if (payload.errorCode === 3000 || payload.errorCode === 3002) {
       expireSession()
     }
-    const error = new Error(payload.message || "请求失败")
+    const error = new Error(payload.message || translateCurrentMessage("api.requestFailed"))
     ;(error as Error & { errorCode?: number }).errorCode = payload.errorCode
     throw error
   }
@@ -49,6 +51,9 @@ export async function request<T>(
   ) {
     authHeaders.set("Content-Type", "application/json")
   }
+  const locale = readStoredLocale()
+  authHeaders.set("Accept-Language", locale)
+  authHeaders.set("X-Locale", locale)
 
   const requestBaseUrl = baseUrl !== undefined ? baseUrl : API_BASE_URL
   const response = await fetch(`${requestBaseUrl}${path}`, {

web/lib/api/customer.ts

@@ -31,7 +31,7 @@ export type UpdateAdminCustomerPayload = CreateAdminCustomerPayload & {
   id: number
 }
 
-/** 与 POST /customer/save/profile 请求体一致 */
+/** Matches POST /customer/save/profile request body. */
 export type SaveCustomerProfileContactLine = {
   id?: number
   contactType: ContactType | string
@@ -49,14 +49,14 @@ export type SaveCustomerProfilePayload = {
   contacts: SaveCustomerProfileContactLine[]
 }
 
-/** 与 POST /customer/list JSON Body 一致 */
+/** Matches POST /customer/list JSON body. */
 export type CustomerListRequest = {
   page: number
   limit: number
   status?: number
   gender?: number
   companyId?: number
-  /** 模糊匹配：客户名、主手机、主邮箱、联系方式、公司名称 */
+  /** Fuzzy match against customer name, primary phone, primary email, contacts, and company name. */
   keyword?: string
 }
 
@@ -78,7 +78,7 @@ export function createCustomer(payload: CreateAdminCustomerPayload) {
   })
 }
 
-/** 单请求 + 单事务保存客户主信息与联系方式全量 */
+/** Saves the customer profile and the full contact list in one request and transaction. */
 export function saveCustomerProfile(payload: SaveCustomerProfilePayload) {
   return request<AdminCustomer>("/api/dashboard/customer/save_profile", {
     method: "POST",

web/lib/api/im.ts

@@ -1,4 +1,5 @@
 import { request } from "@/lib/api/client"
+import { translateCurrentMessage } from "@/i18n/messages"
 import { readKefuChatRuntimeConfig } from "@/lib/sdk/runtime-config"
 import { generateUUID } from "@/lib/utils"
 
@@ -280,7 +281,7 @@ function createExchangeHeaders() {
 function createImHeaders() {
   const sessionToken = getCustomerSessionToken()
   if (!sessionToken) {
-    throw new Error("客服会话未初始化")
+    throw new Error(translateCurrentMessage("api.customerSessionNotReady"))
   }
   return {
     ...createChannelHeaders(),

web/lib/api/notification.ts

@@ -2,6 +2,7 @@ import { readSession } from "@/lib/auth"
 import { request } from "@/lib/api/client"
 import { createWebSocketBaseUrl } from "@/lib/api/websocket"
 import type { PageResult } from "@/lib/api/admin"
+import { translateCurrentMessage } from "@/i18n/messages"
 
 export type NotificationReadStatus = "all" | "unread" | "read"
 
@@ -71,7 +72,7 @@ export function markAllNotificationsRead() {
 export function createNotificationWebSocketUrl() {
   const session = readSession()
   if (!session?.accessToken) {
-    throw new Error("未登录或登录已过期")
+    throw new Error(translateCurrentMessage("api.authExpired"))
   }
 
   const params = new URLSearchParams({