feat: replace hardcoded English text with i18n translations

Update page.tsx password dialog with i18n translations for multilingual support.

Co-authored-by: Simon <85533298+handsomezhuzhu@users.noreply.github.com>

app/page.tsx

@@ -1196,14 +1196,14 @@ export default function TwoFactorAuth() {
       <Dialog open={showExportPassword} onOpenChange={setShowExportPassword}>
         <DialogContent>
           <DialogHeader>
-            <DialogTitle>Set Export Password</DialogTitle>
+            <DialogTitle>{t.setExportPassword}</DialogTitle>
           </DialogHeader>
           <div className="space-y-4 py-4">
             <div className="space-y-2">
               <Label>Password</Label>
               <Input
                 type="password"
-                placeholder="Enter a password to protect your backup"
+                placeholder={t.passwordPlaceholder}
                 value={exportPassword}
                 onChange={(e) => setExportPassword(e.target.value)}
               />
@@ -1236,11 +1236,11 @@ export default function TwoFactorAuth() {
       }}>
         <DialogContent>
           <DialogHeader>
-            <DialogTitle>Import Backup</DialogTitle>
+            <DialogTitle>{t.importBackup}</DialogTitle>
           </DialogHeader>
           <div className="space-y-4 py-4">
             <div className="space-y-2">
-              <Label>Select File</Label>
+              <Label>{t.selectFile}</Label>
               <Input
                 type="file"
                 accept=".enc"
@@ -1253,7 +1253,7 @@ export default function TwoFactorAuth() {
               <Label>Password</Label>
               <Input
                 type="password"
-                placeholder="Enter the password for this backup"
+                placeholder={t.passwordInput}
                 value={importPassword}
                 onChange={(e) => setImportPassword(e.target.value)}
               />

lib/i18n.tsx

@@ -116,6 +116,10 @@ const translations = {
     imageLoadFailed: "图片加载失败",
     duplicateToken: "令牌已存在",
     duplicateTokenDesc: "该密钥的令牌已添加过",
+    setExportPassword: "设置导出密码",
+    passwordPlaceholder: "输入密码以保护您的备份",
+    selectFile: "选择文件",
+    passwordInput: "输入备份密码",
   },
   en: {
     // Header
@@ -227,6 +231,10 @@ const translations = {
     imageLoadFailed: "Failed to load image",
     duplicateToken: "Token already exists",
     duplicateTokenDesc: "A token with this secret key has already been added",
+    setExportPassword: "Set Export Password",
+    passwordPlaceholder: "Enter a password to protect your backup",
+    selectFile: "Select File",
+    passwordInput: "Enter backup password",
   },
 }