feat: add i18n support for initialization page and fix plugin loading text

- Add language selector to register/initialization page with Chinese and English options
- Add register section translations to both zh-Hans.ts and en-US.ts
- Replace hardcoded Chinese texts in register page with i18n translation calls
- Fix hardcoded '加载中...' text in plugin configuration dialog to use t('plugins.loading')
- Follow existing login page pattern for language selector implementation
- Maintain consistent UI/UX design with proper language switching functionality

Co-Authored-By: Junyan Qin <Chin>, 秦骏言 in Chinese, you can call me my english name Rock Chin. <rockchinq@gmail.com>

web/src/app/home/plugins/plugin-installed/plugin-form/PluginForm.tsx

@@ -72,7 +72,7 @@ export default function PluginForm({
   };
 
   if (!pluginInfo || !pluginConfig) {
-    return <div>加载中...</div>;
+    return <div>{t('plugins.loading')}</div>;
   }
 
   function deletePlugin() {

web/src/app/register/page.tsx

@@ -8,6 +8,13 @@ import {
   CardTitle,
   CardDescription,
 } from '@/components/ui/card';
+import {
+  Select,
+  SelectContent,
+  SelectItem,
+  SelectTrigger,
+  SelectValue,
+} from '@/components/ui/select';
 import { useForm } from 'react-hook-form';
 import { zodResolver } from '@hookform/resolvers/zod';
 import * as z from 'zod';
@@ -19,23 +26,28 @@ import {
   FormLabel,
   FormMessage,
 } from '@/components/ui/form';
-import { useEffect } from 'react';
+import { useEffect, useState } from 'react';
 import { httpClient } from '@/app/infra/http/HttpClient';
 import { useRouter } from 'next/navigation';
-import { Mail, Lock } from 'lucide-react';
+import { Mail, Lock, Globe } from 'lucide-react';
 import langbotIcon from '@/app/assets/langbot-logo.webp';
 import { toast } from 'sonner';
+import { useTranslation } from 'react-i18next';
+import i18n from '@/i18n';
 
-const formSchema = z.object({
+const formSchema = (t: (key: string) => string) =>
-  email: z.string().email('请输入有效的邮箱地址'),
+  z.object({
-  password: z.string().min(1, '请输入密码'),
+    email: z.string().email(t('common.invalidEmail')),
-});
+    password: z.string().min(1, t('common.emptyPassword')),
+  });
 
 export default function Register() {
   const router = useRouter();
+  const { t } = useTranslation();
+  const [currentLanguage, setCurrentLanguage] = useState<string>(i18n.language);
 
-  const form = useForm<z.infer<typeof formSchema>>({
+  const form = useForm<z.infer<ReturnType<typeof formSchema>>>({
-    resolver: zodResolver(formSchema),
+    resolver: zodResolver(formSchema(t)),
     defaultValues: {
       email: '',
       password: '',
@@ -43,9 +55,31 @@ export default function Register() {
   });
 
   useEffect(() => {
+    judgeLanguage();
     getIsInitialized();
   }, []);
 
+  const judgeLanguage = () => {
+    const language = navigator.language;
+    if (language) {
+      let lang = 'zh-Hans';
+      if (language === 'zh-CN') {
+        lang = 'zh-Hans';
+      } else {
+        lang = 'en-US';
+      }
+      i18n.changeLanguage(lang);
+      setCurrentLanguage(lang);
+      localStorage.setItem('langbot_language', lang);
+    }
+  };
+
+  const handleLanguageChange = (value: string) => {
+    i18n.changeLanguage(value);
+    setCurrentLanguage(value);
+    localStorage.setItem('langbot_language', value);
+  };
+
   function getIsInitialized() {
     httpClient
       .checkIfInited()
@@ -59,7 +93,7 @@ export default function Register() {
       });
   }
 
-  function onSubmit(values: z.infer<typeof formSchema>) {
+  function onSubmit(values: z.infer<ReturnType<typeof formSchema>>) {
     handleRegister(values.email, values.password);
   }
 
@@ -68,31 +102,46 @@ export default function Register() {
       .initUser(username, password)
       .then((res) => {
         console.log('init user success: ', res);
-        toast.success('初始化成功 请登录');
+        toast.success(t('register.initSuccess'));
         router.push('/login');
       })
       .catch((err) => {
         console.log('init user error: ', err);
-        toast.error('初始化失败：' + err.message);
+        toast.error(t('register.initFailed') + err.message);
       });
   }
 
   return (
     <div className="min-h-screen flex items-center justify-center bg-gray-50">
-      <Card className="w-[360px]">
+      <Card className="w-[375px]">
         <CardHeader>
+          <div className="flex justify-end mb-6">
+            <Select
+              value={currentLanguage}
+              onValueChange={handleLanguageChange}
+            >
+              <SelectTrigger className="w-[140px]">
+                <Globe className="h-4 w-4 mr-2" />
+                <SelectValue placeholder={t('common.language')} />
+              </SelectTrigger>
+              <SelectContent>
+                <SelectItem value="zh-Hans">简体中文</SelectItem>
+                <SelectItem value="en-US">English</SelectItem>
+              </SelectContent>
+            </Select>
+          </div>
           <img
             src={langbotIcon.src}
             alt="LangBot"
             className="w-16 h-16 mb-4 mx-auto"
           />
           <CardTitle className="text-2xl text-center">
-            初始化 LangBot 👋
+            {t('register.title')}
           </CardTitle>
           <CardDescription className="text-center">
-            这是您首次启动 LangBot
+            {t('register.description')}
             <br />
-            您填写的邮箱和密码将作为初始管理员账号
+            {t('register.adminAccountNote')}
           </CardDescription>
         </CardHeader>
         <CardContent>
@@ -103,12 +152,12 @@ export default function Register() {
                 name="email"
                 render={({ field }) => (
                   <FormItem>
-                    <FormLabel>邮箱</FormLabel>
+                    <FormLabel>{t('common.email')}</FormLabel>
                     <FormControl>
                       <div className="relative">
                         <Mail className="absolute left-3 top-3 h-4 w-4 text-gray-400" />
                         <Input
-                          placeholder="输入邮箱地址"
+                          placeholder={t('common.enterEmail')}
                           className="pl-10"
                           {...field}
                         />
@@ -124,13 +173,13 @@ export default function Register() {
                 name="password"
                 render={({ field }) => (
                   <FormItem>
-                    <FormLabel>密码</FormLabel>
+                    <FormLabel>{t('common.password')}</FormLabel>
                     <FormControl>
                       <div className="relative">
                         <Lock className="absolute left-3 top-3 h-4 w-4 text-gray-400" />
                         <Input
                           type="password"
-                          placeholder="输入密码"
+                          placeholder={t('common.enterPassword')}
                           className="pl-10"
                           {...field}
                         />
@@ -142,7 +191,7 @@ export default function Register() {
               />
 
               <Button type="submit" className="w-full mt-4 cursor-pointer">
-                注册
+                {t('register.register')}
               </Button>
             </form>
           </Form>

web/src/i18n/locales/en-US.ts

@@ -203,6 +203,15 @@ const enUS = {
       'Are you sure you want to delete this pipeline? Bots bound to this pipeline will not work.',
     defaultPipelineCannotDelete: 'Default pipeline cannot be deleted',
   },
+  register: {
+    title: 'Initialize LangBot 👋',
+    description: 'This is your first time starting LangBot',
+    adminAccountNote:
+      'The email and password you fill in will be used as the initial administrator account',
+    register: 'Register',
+    initSuccess: 'Initialization successful, please login',
+    initFailed: 'Initialization failed: ',
+  },
 };
 
 export default enUS;

web/src/i18n/locales/zh-Hans.ts

@@ -198,6 +198,14 @@ const zhHans = {
       '你确定要删除这个流水线吗？已绑定此流水线的机器人将无法使用。',
     defaultPipelineCannotDelete: '默认流水线不可删除',
   },
+  register: {
+    title: '初始化 LangBot 👋',
+    description: '这是您首次启动 LangBot',
+    adminAccountNote: '您填写的邮箱和密码将作为初始管理员账号',
+    register: '注册',
+    initSuccess: '初始化成功 请登录',
+    initFailed: '初始化失败：',
+  },
 };
 
 export default zhHans;