feat: 分组管理页面新增专属倍率管理

- 后端新增 GET /admin/groups/:id/rate-multipliers API
- 前端新增 GroupRateMultipliersModal 组件，支持查看/添加/修改/删除用户专属倍率
- 分组列表操作列新增"专属倍率"按钮
- 修复 antigravity_gateway_service_test.go 参数不匹配的预存问题

frontend/src/api/admin/groups.ts

@@ -153,6 +153,27 @@ export async function getGroupApiKeys(
   return data
 }
 
+/**
+ * Rate multiplier entry for a user in a group
+ */
+export interface GroupRateMultiplierEntry {
+  user_id: number
+  user_email: string
+  rate_multiplier: number
+}
+
+/**
+ * Get rate multipliers for users in a group
+ * @param id - Group ID
+ * @returns List of user rate multiplier entries
+ */
+export async function getGroupRateMultipliers(id: number): Promise<GroupRateMultiplierEntry[]> {
+  const { data } = await apiClient.get<GroupRateMultiplierEntry[]>(
+    `/admin/groups/${id}/rate-multipliers`
+  )
+  return data
+}
+
 /**
  * Update group sort orders
  * @param updates - Array of { id, sort_order } objects
@@ -178,6 +199,7 @@ export const groupsAPI = {
   toggleStatus,
   getStats,
   getGroupApiKeys,
+  getGroupRateMultipliers,
   updateSortOrder
 }
 

frontend/src/components/admin/group/GroupRateMultipliersModal.vue

@@ -0,0 +1,271 @@
+<template>
+  <BaseDialog :show="show" :title="t('admin.groups.rateMultipliersTitle')" width="normal" @close="$emit('close')">
+    <div v-if="group" class="space-y-5">
+      <!-- 分组信息 -->
+      <div class="flex flex-wrap items-center gap-3 rounded-lg bg-gray-50 px-4 py-3 text-sm dark:bg-dark-700">
+        <span class="font-medium text-gray-900 dark:text-white">{{ group.name }}</span>
+        <span class="text-gray-400">|</span>
+        <span class="text-gray-600 dark:text-gray-400">{{ t('admin.groups.platforms.' + group.platform) }}</span>
+        <span class="text-gray-400">|</span>
+        <span class="text-gray-600 dark:text-gray-400">
+          {{ t('admin.groups.columns.rateMultiplier') }}: {{ group.rate_multiplier }}x
+        </span>
+      </div>
+
+      <!-- 添加用户 -->
+      <div class="rounded-lg border border-gray-200 p-4 dark:border-dark-600">
+        <h4 class="mb-3 text-sm font-medium text-gray-700 dark:text-gray-300">
+          {{ t('admin.groups.addUserRate') }}
+        </h4>
+        <div class="flex items-end gap-3">
+          <div class="relative flex-1">
+            <input
+              v-model="searchQuery"
+              type="text"
+              class="input w-full"
+              :placeholder="t('admin.groups.searchUserPlaceholder')"
+              @input="handleSearchUsers"
+              @focus="showDropdown = true"
+            />
+            <!-- 搜索结果下拉 -->
+            <div
+              v-if="showDropdown && searchResults.length > 0"
+              class="absolute left-0 right-0 top-full z-10 mt-1 max-h-48 overflow-y-auto rounded-lg border border-gray-200 bg-white shadow-lg dark:border-dark-500 dark:bg-dark-700"
+            >
+              <button
+                v-for="user in searchResults"
+                :key="user.id"
+                type="button"
+                class="flex w-full items-center px-3 py-2 text-left text-sm hover:bg-gray-50 dark:hover:bg-dark-600"
+                @click="selectUser(user)"
+              >
+                <span class="text-gray-900 dark:text-white">{{ user.email }}</span>
+              </button>
+            </div>
+          </div>
+          <div class="w-28">
+            <input
+              v-model.number="newRate"
+              type="number"
+              step="0.001"
+              min="0"
+              class="hide-spinner input w-full"
+              placeholder="1.0"
+            />
+          </div>
+          <button
+            type="button"
+            class="btn btn-primary shrink-0"
+            :disabled="!selectedUser || !newRate || addingRate"
+            @click="handleAddRate"
+          >
+            <Icon v-if="addingRate" name="refresh" size="sm" class="mr-1 animate-spin" />
+            {{ t('common.add') }}
+          </button>
+        </div>
+      </div>
+
+      <!-- 加载状态 -->
+      <div v-if="loading" class="flex justify-center py-8">
+        <svg class="h-8 w-8 animate-spin text-primary-500" fill="none" viewBox="0 0 24 24">
+          <circle class="opacity-25" cx="12" cy="12" r="10" stroke="currentColor" stroke-width="4"></circle>
+          <path class="opacity-75" fill="currentColor" d="M4 12a8 8 0 018-8V0C5.373 0 0 5.373 0 12h4zm2 5.291A7.962 7.962 0 014 12H0c0 3.042 1.135 5.824 3 7.938l3-2.647z"></path>
+        </svg>
+      </div>
+
+      <!-- 已设置的用户列表 -->
+      <div v-else>
+        <h4 class="mb-3 text-sm font-medium text-gray-700 dark:text-gray-300">
+          {{ t('admin.groups.rateMultipliers') }} ({{ entries.length }})
+        </h4>
+
+        <div v-if="entries.length === 0" class="py-8 text-center text-sm text-gray-400 dark:text-gray-500">
+          {{ t('admin.groups.noRateMultipliers') }}
+        </div>
+
+        <div v-else class="space-y-2">
+          <div
+            v-for="entry in entries"
+            :key="entry.user_id"
+            class="flex items-center gap-3 rounded-lg border border-gray-200 px-4 py-3 dark:border-dark-600"
+          >
+            <span class="flex-1 text-sm text-gray-900 dark:text-white">{{ entry.user_email }}</span>
+            <input
+              type="number"
+              step="0.001"
+              min="0"
+              :value="entry.rate_multiplier"
+              class="hide-spinner w-24 rounded-lg border border-gray-300 bg-white px-3 py-2 text-sm font-medium transition-colors focus:border-primary-500 focus:outline-none focus:ring-2 focus:ring-primary-500/20 dark:border-dark-500 dark:bg-dark-700 dark:focus:border-primary-500"
+              @blur="handleUpdateRate(entry, ($event.target as HTMLInputElement).value)"
+              @keydown.enter="($event.target as HTMLInputElement).blur()"
+            />
+            <button
+              type="button"
+              class="rounded-lg p-1.5 text-gray-400 transition-colors hover:bg-red-50 hover:text-red-600 dark:hover:bg-red-900/20 dark:hover:text-red-400"
+              @click="handleDeleteRate(entry)"
+            >
+              <Icon name="trash" size="sm" />
+            </button>
+          </div>
+        </div>
+      </div>
+    </div>
+  </BaseDialog>
+</template>
+
+<script setup lang="ts">
+import { ref, watch } from 'vue'
+import { useI18n } from 'vue-i18n'
+import { useAppStore } from '@/stores/app'
+import { adminAPI } from '@/api/admin'
+import type { GroupRateMultiplierEntry } from '@/api/admin/groups'
+import type { AdminGroup, AdminUser } from '@/types'
+import BaseDialog from '@/components/common/BaseDialog.vue'
+import Icon from '@/components/icons/Icon.vue'
+
+const props = defineProps<{
+  show: boolean
+  group: AdminGroup | null
+}>()
+
+const emit = defineEmits<{
+  close: []
+  success: []
+}>()
+
+const { t } = useI18n()
+const appStore = useAppStore()
+
+const loading = ref(false)
+const entries = ref<GroupRateMultiplierEntry[]>([])
+const searchQuery = ref('')
+const searchResults = ref<AdminUser[]>([])
+const showDropdown = ref(false)
+const selectedUser = ref<AdminUser | null>(null)
+const newRate = ref<number | null>(null)
+const addingRate = ref(false)
+
+let searchTimeout: ReturnType<typeof setTimeout>
+
+const loadEntries = async () => {
+  if (!props.group) return
+  loading.value = true
+  try {
+    entries.value = await adminAPI.groups.getGroupRateMultipliers(props.group.id)
+  } catch (error) {
+    appStore.showError(t('admin.groups.failedToLoad'))
+    console.error('Error loading group rate multipliers:', error)
+  } finally {
+    loading.value = false
+  }
+}
+
+watch(() => props.show, (val) => {
+  if (val && props.group) {
+    loadEntries()
+    searchQuery.value = ''
+    searchResults.value = []
+    selectedUser.value = null
+    newRate.value = null
+  }
+})
+
+const handleSearchUsers = () => {
+  clearTimeout(searchTimeout)
+  selectedUser.value = null
+  if (!searchQuery.value.trim()) {
+    searchResults.value = []
+    showDropdown.value = false
+    return
+  }
+  searchTimeout = setTimeout(async () => {
+    try {
+      const res = await adminAPI.users.list(1, 10, { search: searchQuery.value.trim() })
+      searchResults.value = res.items
+      showDropdown.value = true
+    } catch {
+      searchResults.value = []
+    }
+  }, 300)
+}
+
+const selectUser = (user: AdminUser) => {
+  selectedUser.value = user
+  searchQuery.value = user.email
+  showDropdown.value = false
+  searchResults.value = []
+}
+
+const handleAddRate = async () => {
+  if (!selectedUser.value || !newRate.value || !props.group) return
+  addingRate.value = true
+  try {
+    await adminAPI.users.update(selectedUser.value.id, {
+      group_rates: { [props.group.id]: newRate.value }
+    })
+    appStore.showSuccess(t('admin.groups.rateAdded'))
+    searchQuery.value = ''
+    selectedUser.value = null
+    newRate.value = null
+    await loadEntries()
+    emit('success')
+  } catch (error) {
+    appStore.showError(t('admin.groups.failedToSave'))
+    console.error('Error adding rate multiplier:', error)
+  } finally {
+    addingRate.value = false
+  }
+}
+
+const handleUpdateRate = async (entry: GroupRateMultiplierEntry, value: string) => {
+  if (!props.group) return
+  const numValue = parseFloat(value)
+  if (isNaN(numValue) || numValue === entry.rate_multiplier) return
+  try {
+    await adminAPI.users.update(entry.user_id, {
+      group_rates: { [props.group.id]: numValue }
+    })
+    appStore.showSuccess(t('admin.groups.rateUpdated'))
+    await loadEntries()
+    emit('success')
+  } catch (error) {
+    appStore.showError(t('admin.groups.failedToSave'))
+    console.error('Error updating rate multiplier:', error)
+  }
+}
+
+const handleDeleteRate = async (entry: GroupRateMultiplierEntry) => {
+  if (!props.group) return
+  try {
+    await adminAPI.users.update(entry.user_id, {
+      group_rates: { [props.group.id]: null }
+    })
+    appStore.showSuccess(t('admin.groups.rateDeleted'))
+    await loadEntries()
+    emit('success')
+  } catch (error) {
+    appStore.showError(t('admin.groups.failedToSave'))
+    console.error('Error deleting rate multiplier:', error)
+  }
+}
+
+// 点击外部关闭下拉
+const handleClickOutside = () => {
+  showDropdown.value = false
+}
+
+if (typeof document !== 'undefined') {
+  document.addEventListener('click', handleClickOutside)
+}
+</script>
+
+<style scoped>
+.hide-spinner::-webkit-outer-spin-button,
+.hide-spinner::-webkit-inner-spin-button {
+  -webkit-appearance: none;
+  margin: 0;
+}
+.hide-spinner {
+  -moz-appearance: textfield;
+}
+</style>

frontend/src/i18n/locales/en.ts

@@ -1409,6 +1409,14 @@ export default {
       failedToUpdate: 'Failed to update group',
       failedToDelete: 'Failed to delete group',
       nameRequired: 'Please enter group name',
+      rateMultipliers: 'Rate Multipliers',
+      rateMultipliersTitle: 'Group Rate Multipliers',
+      addUserRate: 'Add User Rate Multiplier',
+      searchUserPlaceholder: 'Search user email...',
+      noRateMultipliers: 'No user rate multipliers configured',
+      rateUpdated: 'Rate multiplier updated',
+      rateDeleted: 'Rate multiplier removed',
+      rateAdded: 'Rate multiplier added',
       platforms: {
         all: 'All Platforms',
         anthropic: 'Anthropic',

frontend/src/i18n/locales/zh.ts

@@ -1508,6 +1508,14 @@ export default {
       failedToCreate: '创建分组失败',
       failedToUpdate: '更新分组失败',
       nameRequired: '请输入分组名称',
+      rateMultipliers: '专属倍率',
+      rateMultipliersTitle: '分组专属倍率管理',
+      addUserRate: '添加用户专属倍率',
+      searchUserPlaceholder: '搜索用户邮箱...',
+      noRateMultipliers: '暂无用户设置了专属倍率',
+      rateUpdated: '专属倍率已更新',
+      rateDeleted: '专属倍率已删除',
+      rateAdded: '专属倍率已添加',
       subscription: {
         title: '订阅设置',
         type: '计费类型',

frontend/src/views/admin/GroupsView.vue

@@ -181,6 +181,13 @@
                 <Icon name="edit" size="sm" />
                 <span class="text-xs">{{ t('common.edit') }}</span>
               </button>
+              <button
+                @click="handleRateMultipliers(row)"
+                class="flex flex-col items-center gap-0.5 rounded-lg p-1.5 text-gray-500 transition-colors hover:bg-gray-100 hover:text-purple-600 dark:hover:bg-dark-700 dark:hover:text-purple-400"
+              >
+                <Icon name="dollar" size="sm" />
+                <span class="text-xs">{{ t('admin.groups.rateMultipliers') }}</span>
+              </button>
               <button
                 @click="handleDelete(row)"
                 class="flex flex-col items-center gap-0.5 rounded-lg p-1.5 text-gray-500 transition-colors hover:bg-red-50 hover:text-red-600 dark:hover:bg-red-900/20 dark:hover:text-red-400"
@@ -1879,6 +1886,14 @@
         </div>
       </template>
     </BaseDialog>
+
+    <!-- Group Rate Multipliers Modal -->
+    <GroupRateMultipliersModal
+      :show="showRateMultipliersModal"
+      :group="rateMultipliersGroup"
+      @close="showRateMultipliersModal = false"
+      @success="loadGroups"
+    />
   </AppLayout>
 </template>
 
@@ -1900,6 +1915,7 @@ import EmptyState from '@/components/common/EmptyState.vue'
 import Select from '@/components/common/Select.vue'
 import PlatformIcon from '@/components/common/PlatformIcon.vue'
 import Icon from '@/components/icons/Icon.vue'
+import GroupRateMultipliersModal from '@/components/admin/group/GroupRateMultipliersModal.vue'
 import { VueDraggable } from 'vue-draggable-plus'
 import { createStableObjectKeyResolver } from '@/utils/stableObjectKey'
 import { useKeyedDebouncedSearch } from '@/composables/useKeyedDebouncedSearch'
@@ -2074,6 +2090,8 @@ const submitting = ref(false)
 const sortSubmitting = ref(false)
 const editingGroup = ref<AdminGroup | null>(null)
 const deletingGroup = ref<AdminGroup | null>(null)
+const showRateMultipliersModal = ref(false)
+const rateMultipliersGroup = ref<AdminGroup | null>(null)
 const sortableGroups = ref<AdminGroup[]>([])
 
 const createForm = reactive({
@@ -2574,6 +2592,11 @@ const handleUpdateGroup = async () => {
   }
 }
 
+const handleRateMultipliers = (group: AdminGroup) => {
+  rateMultipliersGroup.value = group
+  showRateMultipliersModal.value = true
+}
+
 const handleDelete = (group: AdminGroup) => {
   deletingGroup.value = group
   showDeleteDialog.value = true