fix(frontend): settings页面分tab拆分

frontend/src/i18n/locales/en.ts

@@ -3534,6 +3534,15 @@ export default {
     settings: {
       title: 'System Settings',
       description: 'Manage registration, email verification, default values, and SMTP settings',
+      tabs: {
+        general: 'General',
+        security: 'Security',
+        users: 'Users',
+        gateway: 'Gateway',
+        email: 'Email',
+      },
+      emailTabDisabledTitle: 'Email Verification Not Enabled',
+      emailTabDisabledHint: 'Enable email verification in the Security tab to configure SMTP settings.',
       registration: {
         title: 'Registration Settings',
         description: 'Control user registration and verification',
@@ -3543,7 +3552,7 @@ export default {
         emailVerificationHint: 'Require email verification for new registrations',
         emailSuffixWhitelist: 'Email Domain Whitelist',
         emailSuffixWhitelistHint:
-          'Only email addresses from the specified domains can register (for example, @qq.com, @gmail.com)',
+          "Only email addresses from the specified domains can register (for example, {'@'}qq.com, {'@'}gmail.com)",
         emailSuffixWhitelistPlaceholder: 'example.com',
         emailSuffixWhitelistInputHint: 'Leave empty for no restriction',
         promoCode: 'Promo Code',