feat: 增加邀请码注册功能

frontend/src/views/admin/RedeemView.vue

@@ -213,7 +213,7 @@
               <Select v-model="generateForm.type" :options="typeOptions" />
             </div>
             <!-- 余额/并发类型：显示数值输入 -->
-            <div v-if="generateForm.type !== 'subscription'">
+            <div v-if="generateForm.type !== 'subscription' && generateForm.type !== 'invitation'">
               <label class="input-label">
                 {{
                   generateForm.type === 'balance'
@@ -230,6 +230,12 @@
                 class="input"
               />
             </div>
+            <!-- 邀请码类型：显示提示信息 -->
+            <div v-if="generateForm.type === 'invitation'" class="rounded-lg bg-blue-50 p-3 dark:bg-blue-900/20">
+              <p class="text-sm text-blue-700 dark:text-blue-300">
+                {{ t('admin.redeem.invitationHint') }}
+              </p>
+            </div>
             <!-- 订阅类型：显示分组选择和有效天数 -->
             <template v-if="generateForm.type === 'subscription'">
               <div>
@@ -387,7 +393,7 @@
 </template>
 
 <script setup lang="ts">
-import { ref, reactive, computed, onMounted, onUnmounted } from 'vue'
+import { ref, reactive, computed, onMounted, onUnmounted, watch } from 'vue'
 import { useI18n } from 'vue-i18n'
 import { useAppStore } from '@/stores/app'
 import { useClipboard } from '@/composables/useClipboard'
@@ -499,14 +505,16 @@ const columns = computed<Column[]>(() => [
 const typeOptions = computed(() => [
   { value: 'balance', label: t('admin.redeem.balance') },
   { value: 'concurrency', label: t('admin.redeem.concurrency') },
-  { value: 'subscription', label: t('admin.redeem.subscription') }
+  { value: 'subscription', label: t('admin.redeem.subscription') },
+  { value: 'invitation', label: t('admin.redeem.invitation') }
 ])
 
 const filterTypeOptions = computed(() => [
   { value: '', label: t('admin.redeem.allTypes') },
   { value: 'balance', label: t('admin.redeem.balance') },
   { value: 'concurrency', label: t('admin.redeem.concurrency') },
-  { value: 'subscription', label: t('admin.redeem.subscription') }
+  { value: 'subscription', label: t('admin.redeem.subscription') },
+  { value: 'invitation', label: t('admin.redeem.invitation') }
 ])
 
 const filterStatusOptions = computed(() => [
@@ -546,6 +554,18 @@ const generateForm = reactive({
   validity_days: 30
 })
 
+// 监听类型变化，邀请码类型时自动设置 value 为 0
+watch(
+  () => generateForm.type,
+  (newType) => {
+    if (newType === 'invitation') {
+      generateForm.value = 0
+    } else if (generateForm.value === 0) {
+      generateForm.value = 10
+    }
+  }
+)
+
 const loadCodes = async () => {
   if (abortController) {
     abortController.abort()

frontend/src/views/admin/SettingsView.vue

@@ -339,6 +339,21 @@
               <Toggle v-model="form.promo_code_enabled" />
             </div>
 
+            <!-- Invitation Code -->
+            <div
+              class="flex items-center justify-between border-t border-gray-100 pt-4 dark:border-dark-700"
+            >
+              <div>
+                <label class="font-medium text-gray-900 dark:text-white">{{
+                  t('admin.settings.registration.invitationCode')
+                }}</label>
+                <p class="text-sm text-gray-500 dark:text-gray-400">
+                  {{ t('admin.settings.registration.invitationCodeHint') }}
+                </p>
+              </div>
+              <Toggle v-model="form.invitation_code_enabled" />
+            </div>
+
             <!-- Password Reset - Only show when email verification is enabled -->
             <div
               v-if="form.email_verify_enabled"
@@ -1115,6 +1130,7 @@ const form = reactive<SettingsForm>({
   registration_enabled: true,
   email_verify_enabled: false,
   promo_code_enabled: true,
+  invitation_code_enabled: false,
   password_reset_enabled: false,
   totp_enabled: false,
   totp_encryption_key_configured: false,
@@ -1243,6 +1259,7 @@ async function saveSettings() {
       registration_enabled: form.registration_enabled,
       email_verify_enabled: form.email_verify_enabled,
       promo_code_enabled: form.promo_code_enabled,
+      invitation_code_enabled: form.invitation_code_enabled,
       password_reset_enabled: form.password_reset_enabled,
       totp_enabled: form.totp_enabled,
       default_balance: form.default_balance,