refactor(i18n): 移除多语言支持及相关组件，切换登录页文本为中文

- 删除英文和中文语言文件，去除国际化配置
- 移除语言切换组件 LangSwitch.vue
- 登录页中静态替换多语言文本为中文文本
- 站点头部登录、退出等文案替换为中文
- 更新 Nuxt 配置，移除 i18n 模块和相关配置
- 保持核心功能不变，只保留中文语言显示

app/pages/login.vue

@@ -57,8 +57,8 @@
 
         <!-- 登录卡片头部 -->
         <div class="form-header">
-          <h2 class="form-title">{{ $t('login.welcomeBack') }}</h2>
-          <p class="form-subtitle">{{ $t('login.loginToContinue') }}</p>
+          <h2 class="form-title">{{ '欢迎回来' }}</h2>
+          <p class="form-subtitle">{{ '请登录您的账号以继续' }}</p>
         </div>
 
         <!-- 切换标签 -->
@@ -69,7 +69,7 @@
             @click="setLoginType('scan')"
           >
             <QrcodeOutlined />
-            {{ $t('login.scanLogin') }}
+            {{ '扫码登录' }}
           </button>
           <button
             class="login-tab"
@@ -77,7 +77,7 @@
             @click="setLoginType('sms')"
           >
             <MobileOutlined />
-            {{ $t('login.phoneLogin') }}
+            {{ '手机号登录' }}
           </button>
         </div>
 
@@ -91,7 +91,7 @@
                 size="large"
                 allow-clear
                 :maxlength="11"
-                :placeholder="$t('login.phonePlaceholder')"
+                :placeholder="'请输入手机号码'"
                 class="form-input"
               >
                 <template #prefix>
@@ -108,7 +108,7 @@
                   size="large"
                   allow-clear
                   :maxlength="6"
-                  :placeholder="$t('login.smsCodePlaceholder')"
+                  :placeholder="'请输入验证码'"
                   class="form-input"
                   @press-enter="submitSms"
                 />
@@ -118,8 +118,8 @@
                   :class="{ disabled: countdown > 0 }"
                   @click.prevent="openImgCodeModal"
                 >
-                  <span v-if="countdown <= 0">{{ $t('login.sendCode') }}</span>
-                  <span v-else>{{ countdown }}{{ $t('login.resendAfter') }}</span>
+                  <span v-if="countdown <= 0">{{ '发送验证码' }}</span>
+                  <span v-else>{{ countdown }}{{ 's 后重发' }}</span>
                 </button>
               </div>
             </a-form-item>
@@ -128,10 +128,10 @@
             <div class="agreement-row">
               <a-checkbox v-model:checked="form.agreement">
                 <span class="agreement-text">
-                  {{ $t('login.agreeTerms') }}
-                  <NuxtLink to="/agreement" target="_blank" class="agreement-link" @click.stop>{{ $t('login.registerAgreement') }}</NuxtLink>
-                  {{ $t('common.and') || '和' }}
-                  <NuxtLink to="/privacy" target="_blank" class="agreement-link" @click.stop>{{ $t('login.privacyPolicy') }}</NuxtLink>
+                  {{ '我已阅读并同意' }}
+                  <NuxtLink to="/agreement" target="_blank" class="agreement-link" @click.stop>{{ '《注册协议》' }}</NuxtLink>
+                  {{ '和' || '和' }}
+                  <NuxtLink to="/privacy" target="_blank" class="agreement-link" @click.stop>{{ '《隐私政策》' }}</NuxtLink>
                 </span>
               </a-checkbox>
             </div>
@@ -145,7 +145,7 @@
                 class="submit-btn"
                 @click="submitSms"
               >
-                {{ loading ? $t('login.loggingIn') : $t('login.loginNow') }}
+                {{ loading ? '登录中…' : '立即登录' }}
               </a-button>
             </a-form-item>
           </template>
@@ -161,39 +161,39 @@
           <button class="switch-scan-btn" @click="toggleScan">
             <QrcodeOutlined v-if="loginType !== 'scan'" />
             <MobileOutlined v-else />
-            {{ loginType === 'scan' ? $t('login.switchToPhone') : $t('login.switchToScan') }}
+            {{ loginType === 'scan' ? '切换到手机号登录' : '切换到扫码登录' }}
           </button>
         </div>
       </div>
     </div>
 
     <!-- 图形验证码弹窗（发送短信用） -->
-    <a-modal v-model:open="imgCodeModalOpen" :width="360" :footer="null" :title="$t('login.securityVerify')">
-      <p class="modal-tip">{{ $t('login.completeVerifyFirst') }}</p>
+    <a-modal v-model:open="imgCodeModalOpen" :width="360" :footer="null" :title="'安全验证'">
+      <p class="modal-tip">{{ '请先完成图形验证码验证' }}</p>
       <div class="captcha-row modal-captcha">
         <a-input
           v-model:value="imgCode"
           size="large"
           allow-clear
           :maxlength="5"
-          :placeholder="$t('login.enterImgCode')"
+          :placeholder="'请输入图形验证码'"
           @press-enter="sendSmsCode"
         />
-        <button class="captcha-img-btn" @click.prevent="changeCaptcha" :title="$t('login.clickRefresh')">
+        <button class="captcha-img-btn" @click.prevent="changeCaptcha" :title="'点击刷新'">
           <img alt="captcha" :src="captcha" />
         </button>
       </div>
       <a-button block size="large" type="primary" :loading="sendingSms" class="submit-btn" @click="sendSmsCode">
-        {{ $t('login.sendCode') }}
+        {{ '发送验证码' }}
       </a-button>
     </a-modal>
 
     <!-- 选择账号弹窗 -->
-    <a-modal v-model:open="selectUserOpen" :width="520" :footer="null" :title="$t('login.selectAccount')">
+    <a-modal v-model:open="selectUserOpen" :width="520" :footer="null" :title="'选择账号登录'">
       <a-list item-layout="horizontal" :data-source="admins">
         <template #renderItem="{ item }">
           <a-list-item class="list-item" @click="selectUser(item)">
-            <a-list-item-meta :description="`${$t('login.tenantId')}: ${item.tenantId}`">
+            <a-list-item-meta :description="`${'租户ID'}: ${item.tenantId}`">
               <template #title>{{ item.tenantName || item.username }}</template>
               <template #avatar>
                 <a-avatar :src="item.avatar" />
@@ -225,8 +225,6 @@ import { getUserInfo } from '@/api/layout'
 import { TEMPLATE_ID } from '@/config/setting'
 import { setToken } from '@/utils/token-util'
 import type { QrCodeStatusResponse } from '@/api/passport/qrLogin'
-const { t } = useI18n()
-
 definePageMeta({ layout: false })
 
 const route = useRoute()
@@ -260,10 +258,10 @@ const form = reactive<LoginParam & { smsCode?: string; agreement?: boolean }>({
 const phoneReg = /^1[3-9]\d{9}$/
 const rules = reactive({
   phone: [
-    { required: true, message: t('login.enterPhone'), type: 'string' },
-    { pattern: phoneReg, message: t('login.phoneFormatError'), trigger: 'blur' }
+    { required: true, message: '请输入手机号码', type: 'string' },
+    { pattern: phoneReg, message: '手机号格式不正确', trigger: 'blur' }
   ],
-  smsCode: [{ required: true, message: t('login.enterSmsCode'), type: 'string' }]
+  smsCode: [{ required: true, message: '请输入短信验证码', type: 'string' }]
 })
 
 const bgStyle = computed(() => {
@@ -292,27 +290,27 @@ async function changeCaptcha() {
     captcha.value = data.base64
     captchaText.value = data.text
   } catch (e: unknown) {
-    message.error(e instanceof Error ? e.message : t('login.loginFailed'))
+    message.error(e instanceof Error ? e.message : '登录失败')
   }
 }
 
 function openImgCodeModal() {
-  if (!form.phone) return message.error(t('login.enterPhone'))
+  if (!form.phone) return message.error('请输入手机号码')
   imgCode.value = ''
   changeCaptcha()
   imgCodeModalOpen.value = true
 }
 
 async function sendSmsCode() {
-  if (!imgCode.value) return message.error(t('login.enterImgCode'))
+  if (!imgCode.value) return message.error('请输入图形验证码')
   if (captchaText.value && imgCode.value.toLowerCase() !== captchaText.value.toLowerCase()) {
-    return message.error(t('login.imgCodeIncorrect'))
+    return message.error('图形验证码不正确')
   }
 
   sendingSms.value = true
   try {
     await sendSmsCaptcha({ phone: form.phone })
-    message.success(t('login.smsSentSuccess'))
+    message.success('短信验证码发送成功，请注意查收')
     imgCodeModalOpen.value = false
     countdown.value = 30
     stopCountdown()
@@ -322,7 +320,7 @@ async function sendSmsCode() {
       if (countdown.value <= 0) stopCountdown()
     }, 1000)
   } catch (e: unknown) {
-    message.error(e instanceof Error ? e.message : t('login.sendFailed'))
+    message.error(e instanceof Error ? e.message : '发送失败')
   } finally {
     sendingSms.value = false
   }
@@ -360,7 +358,7 @@ async function submitSms() {
   if (!formRef.value) return
   // 校验协议勾选
   if (!form.agreement) {
-    return message.error(t('login.agreeRequired'))
+    return message.error('请先阅读并同意《注册协议》和《隐私政策》')
   }
   loading.value = true
   try {
@@ -381,11 +379,11 @@ async function submitSms() {
       return
     }
 
-    message.success(msg || t('login.loginSuccess'))
+    message.success(msg || '登录成功')
     await ensureUserIdPersisted()
     await goAfterLogin()
   } catch (e: unknown) {
-    message.error(e instanceof Error ? e.message : t('login.loginFailed'))
+    message.error(e instanceof Error ? e.message : '登录失败')
   } finally {
     loading.value = false
   }
@@ -406,12 +404,12 @@ async function onQrLoginSuccess(payload: QrCodeStatusResponse) {
       ? (payload.userInfo as { userId?: unknown }).userId
       : undefined
   await ensureUserIdPersisted(seedUserId)
-  message.success(t('login.scanLoginSuccess'))
+  message.success('扫码登录成功')
   await goAfterLogin()
 }
 
 function onQrLoginError(error: string) {
-  message.error(error || t('login.scanLoginFailed'))
+  message.error(error || '扫码登录失败')
 }
 
 onMounted(async () => {