feat(admin): 新增账户余额/配额查询与展示

- 新增 accountBalanceService 与多 Provider 适配（Claude/Claude Console/OpenAI Responses/通用）
  - Redis 增加余额查询结果与本地统计缓存读写
  - 管理端新增 /admin/accounts/balance 相关接口与汇总接口，并在应用启动时注册 Provider
  - 后台前端新增余额组件与 Dashboard 余额/配额汇总、低余额/高使用提示
  - 补充 accountBalanceService 单元测试

web/admin-spa/src/components/accounts/BalanceDisplay.vue

@@ -0,0 +1,261 @@
+<template>
+  <div class="min-w-[200px] space-y-1">
+    <div v-if="loading" class="flex items-center gap-2">
+      <i class="fas fa-spinner fa-spin text-gray-400 dark:text-gray-500"></i>
+      <span class="text-xs text-gray-500 dark:text-gray-400">加载中...</span>
+    </div>
+
+    <div v-else-if="requestError" class="flex items-center gap-2">
+      <i class="fas fa-exclamation-circle text-red-500"></i>
+      <span class="text-xs text-red-600 dark:text-red-400">{{ requestError }}</span>
+      <button
+        class="text-xs text-blue-500 hover:text-blue-600 dark:text-blue-400"
+        :disabled="refreshing"
+        @click="reload"
+      >
+        重试
+      </button>
+    </div>
+
+    <div v-else-if="balanceData" class="space-y-1">
+      <div v-if="balanceData.status === 'error' && balanceData.error" class="text-xs text-red-500">
+        {{ balanceData.error }}
+      </div>
+
+      <div class="flex items-center justify-between gap-2">
+        <div class="flex items-center gap-2">
+          <i
+            class="fas"
+            :class="
+              balanceData.balance
+                ? 'fa-wallet text-green-600 dark:text-green-400'
+                : 'fa-chart-line text-gray-500 dark:text-gray-400'
+            "
+          ></i>
+          <span class="text-sm font-semibold text-gray-900 dark:text-gray-100">
+            {{ primaryText }}
+          </span>
+          <span class="rounded px-1.5 py-0.5 text-xs" :class="sourceClass">
+            {{ sourceLabel }}
+          </span>
+        </div>
+
+        <button
+          v-if="!hideRefresh"
+          class="text-xs text-gray-500 hover:text-blue-600 dark:text-gray-400 dark:hover:text-blue-400"
+          :disabled="refreshing"
+          :title="refreshing ? '刷新中...' : '刷新余额'"
+          @click="refresh"
+        >
+          <i class="fas fa-sync-alt" :class="{ 'fa-spin': refreshing }"></i>
+        </button>
+      </div>
+
+      <!-- 配额（如适用） -->
+      <div v-if="quotaInfo" class="space-y-1">
+        <div class="flex items-center justify-between text-xs text-gray-600 dark:text-gray-400">
+          <span>已用: {{ formatNumber(quotaInfo.used) }}</span>
+          <span>剩余: {{ formatNumber(quotaInfo.remaining) }}</span>
+        </div>
+        <div class="h-1.5 w-full rounded-full bg-gray-200 dark:bg-gray-700">
+          <div
+            class="h-1.5 rounded-full transition-all"
+            :class="quotaBarClass"
+            :style="{ width: `${Math.min(100, quotaInfo.percentage)}%` }"
+          ></div>
+        </div>
+        <div class="flex items-center justify-between text-xs">
+          <span class="text-gray-500 dark:text-gray-400">
+            {{ quotaInfo.percentage.toFixed(1) }}% 已使用
+          </span>
+          <span v-if="quotaInfo.resetAt" class="text-gray-400 dark:text-gray-500">
+            重置: {{ formatResetTime(quotaInfo.resetAt) }}
+          </span>
+        </div>
+      </div>
+
+      <div v-else-if="balanceData.quota?.unlimited" class="flex items-center gap-2">
+        <i class="fas fa-infinity text-blue-500 dark:text-blue-400"></i>
+        <span class="text-xs text-gray-600 dark:text-gray-400">无限制</span>
+      </div>
+
+      <div
+        v-if="balanceData.cacheExpiresAt && balanceData.source === 'cache'"
+        class="text-xs text-gray-400 dark:text-gray-500"
+      >
+        缓存至: {{ formatCacheExpiry(balanceData.cacheExpiresAt) }}
+      </div>
+    </div>
+
+    <div v-else class="text-xs text-gray-400 dark:text-gray-500">暂无余额数据</div>
+  </div>
+</template>
+
+<script setup>
+import { ref, computed, onMounted, watch } from 'vue'
+import { apiClient } from '@/config/api'
+
+const props = defineProps({
+  accountId: { type: String, required: true },
+  platform: { type: String, required: true },
+  initialBalance: { type: Object, default: null },
+  hideRefresh: { type: Boolean, default: false },
+  autoLoad: { type: Boolean, default: true }
+})
+
+const emit = defineEmits(['refreshed', 'error'])
+
+const balanceData = ref(props.initialBalance)
+const loading = ref(false)
+const refreshing = ref(false)
+const requestError = ref(null)
+
+const sourceClass = computed(() => {
+  const source = balanceData.value?.source
+  return {
+    'bg-blue-100 text-blue-700 dark:bg-blue-900/40 dark:text-blue-300': source === 'api',
+    'bg-gray-100 text-gray-600 dark:bg-gray-700/60 dark:text-gray-300': source === 'cache',
+    'bg-yellow-100 text-yellow-700 dark:bg-yellow-900/40 dark:text-yellow-300': source === 'local'
+  }
+})
+
+const sourceLabel = computed(() => {
+  const source = balanceData.value?.source
+  return { api: 'API', cache: '缓存', local: '本地' }[source] || '未知'
+})
+
+const quotaInfo = computed(() => {
+  const quota = balanceData.value?.quota
+  if (!quota || quota.unlimited) return null
+  if (typeof quota.percentage !== 'number' || !Number.isFinite(quota.percentage)) return null
+  return {
+    used: quota.used ?? 0,
+    remaining: quota.remaining ?? 0,
+    percentage: quota.percentage,
+    resetAt: quota.resetAt || null
+  }
+})
+
+const quotaBarClass = computed(() => {
+  const percentage = quotaInfo.value?.percentage || 0
+  if (percentage >= 90) return 'bg-red-500 dark:bg-red-600'
+  if (percentage >= 70) return 'bg-yellow-500 dark:bg-yellow-600'
+  return 'bg-green-500 dark:bg-green-600'
+})
+
+const primaryText = computed(() => {
+  if (balanceData.value?.balance?.formattedAmount) {
+    return balanceData.value.balance.formattedAmount
+  }
+  const dailyCost = Number(balanceData.value?.statistics?.dailyCost || 0)
+  return `今日成本 ${formatCurrency(dailyCost)}`
+})
+
+const load = async () => {
+  if (!props.autoLoad) return
+  if (!props.accountId || !props.platform) return
+
+  loading.value = true
+  requestError.value = null
+
+  try {
+    const response = await apiClient.get(`/admin/accounts/${props.accountId}/balance`, {
+      params: { platform: props.platform, queryApi: false }
+    })
+    if (response?.success) {
+      balanceData.value = response.data
+    } else {
+      requestError.value = response?.error || '加载失败'
+    }
+  } catch (error) {
+    requestError.value = error.message || '网络错误'
+    emit('error', error)
+  } finally {
+    loading.value = false
+  }
+}
+
+const refresh = async () => {
+  if (!props.accountId || !props.platform) return
+  if (refreshing.value) return
+
+  refreshing.value = true
+  requestError.value = null
+
+  try {
+    const response = await apiClient.post(`/admin/accounts/${props.accountId}/balance/refresh`, {
+      platform: props.platform
+    })
+    if (response?.success) {
+      balanceData.value = response.data
+      emit('refreshed', response.data)
+    } else {
+      requestError.value = response?.error || '刷新失败'
+    }
+  } catch (error) {
+    requestError.value = error.message || '网络错误'
+    emit('error', error)
+  } finally {
+    refreshing.value = false
+  }
+}
+
+const reload = async () => {
+  await load()
+}
+
+const formatNumber = (num) => {
+  if (num === Infinity) return '∞'
+  const value = Number(num)
+  if (!Number.isFinite(value)) return 'N/A'
+  return value.toLocaleString('zh-CN', { maximumFractionDigits: 2 })
+}
+
+const formatCurrency = (amount) => {
+  const value = Number(amount)
+  if (!Number.isFinite(value)) return '$0.00'
+  if (value >= 1) return `$${value.toFixed(2)}`
+  if (value >= 0.01) return `$${value.toFixed(3)}`
+  return `$${value.toFixed(6)}`
+}
+
+const formatResetTime = (isoString) => {
+  const date = new Date(isoString)
+  const now = new Date()
+  const diff = date.getTime() - now.getTime()
+  if (!Number.isFinite(diff)) return '未知'
+  if (diff < 0) return '已过期'
+
+  const minutes = Math.floor(diff / (1000 * 60))
+  const hours = Math.floor(minutes / 60)
+  const remainMinutes = minutes % 60
+  if (hours >= 24) {
+    const days = Math.floor(hours / 24)
+    return `${days}天后`
+  }
+  return `${hours}小时${remainMinutes}分钟`
+}
+
+const formatCacheExpiry = (isoString) => {
+  const date = new Date(isoString)
+  if (Number.isNaN(date.getTime())) return '未知'
+  return date.toLocaleTimeString('zh-CN', { hour: '2-digit', minute: '2-digit' })
+}
+
+watch(
+  () => props.initialBalance,
+  (newVal) => {
+    if (newVal) {
+      balanceData.value = newVal
+    }
+  }
+)
+
+onMounted(() => {
+  if (!props.initialBalance) {
+    load()
+  }
+})
+
+defineExpose({ refresh, reload })
+</script>

web/admin-spa/src/views/AccountsView.vue

@@ -141,6 +141,32 @@
               </el-tooltip>
             </div>
 
+            <!-- 刷新余额按钮 -->
+            <div class="relative">
+              <el-tooltip
+                content="刷新当前页余额（触发查询，失败自动降级）"
+                effect="dark"
+                placement="bottom"
+              >
+                <button
+                  class="group relative flex items-center justify-center gap-2 rounded-lg border border-gray-200 bg-white px-4 py-2 text-sm font-medium text-gray-700 shadow-sm transition-all duration-200 hover:border-gray-300 hover:shadow-md disabled:cursor-not-allowed disabled:opacity-50 dark:border-gray-600 dark:bg-gray-800 dark:text-gray-300 dark:hover:border-gray-500 sm:w-auto"
+                  :disabled="accountsLoading || refreshingBalances"
+                  @click="refreshVisibleBalances"
+                >
+                  <div
+                    class="absolute -inset-0.5 rounded-lg bg-gradient-to-r from-blue-500 to-indigo-500 opacity-0 blur transition duration-300 group-hover:opacity-20"
+                  ></div>
+                  <i
+                    :class="[
+                      'fas relative text-blue-500',
+                      refreshingBalances ? 'fa-spinner fa-spin' : 'fa-wallet'
+                    ]"
+                  />
+                  <span class="relative">刷新余额</span>
+                </button>
+              </el-tooltip>
+            </div>
+
             <!-- 选择/取消选择按钮 -->
             <button
               class="flex items-center gap-2 rounded-lg border border-gray-200 bg-white px-4 py-2 text-sm font-medium text-gray-700 shadow-sm transition-all duration-200 hover:border-gray-300 hover:bg-gray-50 hover:shadow-md dark:border-gray-600 dark:bg-gray-800 dark:text-gray-300 dark:hover:bg-gray-700"
@@ -263,6 +289,11 @@
                 >
                   今日使用
                 </th>
+                <th
+                  class="min-w-[220px] px-3 py-4 text-left text-xs font-bold uppercase tracking-wider text-gray-700 dark:text-gray-300"
+                >
+                  余额/配额
+                </th>
                 <th
                   class="min-w-[210px] px-3 py-4 text-left text-xs font-bold uppercase tracking-wider text-gray-700 dark:text-gray-300"
                 >
@@ -765,6 +796,15 @@
                   </div>
                   <div v-else class="text-xs text-gray-400">暂无数据</div>
                 </td>
+                <td class="whitespace-nowrap px-3 py-4">
+                  <BalanceDisplay
+                    :account-id="account.id"
+                    :initial-balance="account.balanceInfo"
+                    :platform="account.platform"
+                    @error="(error) => handleBalanceError(account.id, error)"
+                    @refreshed="(data) => handleBalanceRefreshed(account.id, data)"
+                  />
+                </td>
                 <td class="whitespace-nowrap px-3 py-4">
                   <div v-if="account.platform === 'claude'" class="space-y-2">
                     <!-- OAuth 账户：显示三窗口 OAuth usage -->
@@ -1425,6 +1465,18 @@
             </div>
           </div>
 
+          <!-- 余额/配额 -->
+          <div class="mb-3">
+            <p class="mb-1 text-xs text-gray-500 dark:text-gray-400">余额/配额</p>
+            <BalanceDisplay
+              :account-id="account.id"
+              :initial-balance="account.balanceInfo"
+              :platform="account.platform"
+              @error="(error) => handleBalanceError(account.id, error)"
+              @refreshed="(data) => handleBalanceRefreshed(account.id, data)"
+            />
+          </div>
+
           <!-- 状态信息 -->
           <div class="mb-3 space-y-2">
             <!-- 会话窗口 -->
@@ -2062,6 +2114,7 @@ import AccountScheduledTestModal from '@/components/accounts/AccountScheduledTes
 import ConfirmModal from '@/components/common/ConfirmModal.vue'
 import CustomDropdown from '@/components/common/CustomDropdown.vue'
 import ActionDropdown from '@/components/common/ActionDropdown.vue'
+import BalanceDisplay from '@/components/accounts/BalanceDisplay.vue'
 
 // 使用确认弹窗
 const { showConfirmModal, confirmOptions, showConfirm, handleConfirm, handleCancel } = useConfirm()
@@ -2069,6 +2122,7 @@ const { showConfirmModal, confirmOptions, showConfirm, handleConfirm, handleCanc
 // 数据状态
 const accounts = ref([])
 const accountsLoading = ref(false)
+const refreshingBalances = ref(false)
 const accountsSortBy = ref('name')
 const accountsSortOrder = ref('asc')
 const apiKeys = ref([]) // 保留用于其他功能（如删除账户时显示绑定信息）
@@ -2768,6 +2822,72 @@ const paginatedAccounts = computed(() => {
   return sortedAccounts.value.slice(start, end)
 })
 
+// 余额刷新成功回调
+const handleBalanceRefreshed = (accountId, balanceInfo) => {
+  accounts.value = accounts.value.map((account) => {
+    if (account.id !== accountId) return account
+    return { ...account, balanceInfo }
+  })
+}
+
+// 余额请求错误回调（仅提示，不中断页面）
+const handleBalanceError = (_accountId, error) => {
+  const message = error?.message || '余额查询失败'
+  showToast(message, 'error')
+}
+
+// 批量刷新当前页余额（触发查询）
+const refreshVisibleBalances = async () => {
+  if (refreshingBalances.value) return
+
+  const targets = paginatedAccounts.value
+  if (!targets || targets.length === 0) {
+    return
+  }
+
+  refreshingBalances.value = true
+  try {
+    const results = await Promise.all(
+      targets.map(async (account) => {
+        try {
+          const response = await apiClient.post(`/admin/accounts/${account.id}/balance/refresh`, {
+            platform: account.platform
+          })
+          return { id: account.id, success: !!response?.success, data: response?.data || null }
+        } catch (error) {
+          return { id: account.id, success: false, error: error?.message || '刷新失败' }
+        }
+      })
+    )
+
+    const updatedMap = results.reduce((map, item) => {
+      if (item.success && item.data) {
+        map[item.id] = item.data
+      }
+      return map
+    }, {})
+
+    const successCount = results.filter((r) => r.success).length
+    const failCount = results.length - successCount
+
+    if (Object.keys(updatedMap).length > 0) {
+      accounts.value = accounts.value.map((account) => {
+        const balanceInfo = updatedMap[account.id]
+        if (!balanceInfo) return account
+        return { ...account, balanceInfo }
+      })
+    }
+
+    if (failCount === 0) {
+      showToast(`成功刷新 ${successCount} 个账户余额`, 'success')
+    } else {
+      showToast(`刷新完成：${successCount} 成功，${failCount} 失败`, 'warning')
+    }
+  } finally {
+    refreshingBalances.value = false
+  }
+}
+
 const updateSelectAllState = () => {
   const currentIds = paginatedAccounts.value.map((account) => account.id)
   const selectedInCurrentPage = currentIds.filter((id) =>
@@ -2818,6 +2938,54 @@ const cleanupSelectedAccounts = () => {
   updateSelectAllState()
 }
 
+// 异步加载余额缓存（按平台批量拉取，避免逐行请求）
+const loadBalanceCacheForAccounts = async () => {
+  const current = accounts.value
+  if (!Array.isArray(current) || current.length === 0) {
+    return
+  }
+
+  const platforms = Array.from(new Set(current.map((acc) => acc.platform).filter(Boolean)))
+  if (platforms.length === 0) {
+    return
+  }
+
+  const responses = await Promise.all(
+    platforms.map(async (platform) => {
+      try {
+        const res = await apiClient.get(`/admin/accounts/balance/platform/${platform}`, {
+          params: { queryApi: false }
+        })
+        return { platform, success: !!res?.success, data: res?.data || [] }
+      } catch (error) {
+        console.debug(`Failed to load balance cache for ${platform}:`, error)
+        return { platform, success: false, data: [] }
+      }
+    })
+  )
+
+  const balanceMap = responses.reduce((map, item) => {
+    if (!item.success) return map
+    const list = Array.isArray(item.data) ? item.data : []
+    list.forEach((entry) => {
+      const accountId = entry?.data?.accountId
+      if (accountId) {
+        map[accountId] = entry.data
+      }
+    })
+    return map
+  }, {})
+
+  if (Object.keys(balanceMap).length === 0) {
+    return
+  }
+
+  accounts.value = accounts.value.map((account) => ({
+    ...account,
+    balanceInfo: balanceMap[account.id] || account.balanceInfo || null
+  }))
+}
+
 // 加载账户列表
 const loadAccounts = async (forceReload = false) => {
   accountsLoading.value = true
@@ -3010,6 +3178,11 @@ const loadAccounts = async (forceReload = false) => {
         console.debug('Claude usage loading failed:', err)
       })
     }
+
+    // 异步加载余额缓存（按平台批量）
+    loadBalanceCacheForAccounts().catch((err) => {
+      console.debug('Balance cache loading failed:', err)
+    })
   } catch (error) {
     showToast('加载账户失败', 'error')
   } finally {

web/admin-spa/src/views/DashboardView.vue

@@ -196,6 +196,105 @@
       </div>
     </div>
 
+    <!-- 账户余额/配额汇总 -->
+    <div class="mb-4 grid grid-cols-1 gap-3 sm:mb-6 sm:grid-cols-2 sm:gap-4 md:mb-8 md:gap-6">
+      <div class="stat-card">
+        <div class="flex items-center justify-between">
+          <div>
+            <p class="mb-1 text-xs font-semibold text-gray-600 dark:text-gray-400 sm:text-sm">
+              账户余额/配额
+            </p>
+            <p class="text-2xl font-bold text-gray-900 dark:text-gray-100 sm:text-3xl">
+              {{ formatCurrencyUsd(balanceSummary.totalBalance || 0) }}
+            </p>
+            <p class="mt-1 text-xs text-gray-500 dark:text-gray-400">
+              低余额: {{ balanceSummary.lowBalanceCount || 0 }} | 总成本:
+              {{ formatCurrencyUsd(balanceSummary.totalCost || 0) }}
+            </p>
+          </div>
+          <div class="stat-icon flex-shrink-0 bg-gradient-to-br from-emerald-500 to-green-600">
+            <i class="fas fa-wallet" />
+          </div>
+        </div>
+
+        <div class="mt-3 flex items-center justify-between gap-3">
+          <p class="text-xs text-gray-500 dark:text-gray-400">
+            更新时间: {{ formatLastUpdate(balanceSummaryUpdatedAt) }}
+          </p>
+          <button
+            class="flex items-center gap-2 rounded-lg border border-gray-200 bg-white px-3 py-1.5 text-xs font-medium text-gray-700 shadow-sm transition-all duration-200 hover:border-gray-300 hover:shadow-md disabled:cursor-not-allowed disabled:opacity-50 dark:border-gray-600 dark:bg-gray-800 dark:text-gray-300 dark:hover:border-gray-500"
+            :disabled="loadingBalanceSummary"
+            @click="loadBalanceSummary"
+          >
+            <i :class="['fas', loadingBalanceSummary ? 'fa-spinner fa-spin' : 'fa-sync-alt']" />
+            刷新
+          </button>
+        </div>
+      </div>
+
+      <div class="card p-4 sm:p-6">
+        <div class="mb-3 flex items-center justify-between">
+          <h3 class="text-sm font-semibold text-gray-900 dark:text-gray-100">低余额账户</h3>
+          <span class="text-xs text-gray-500 dark:text-gray-400">
+            {{ lowBalanceAccounts.length }} 个
+          </span>
+        </div>
+
+        <div
+          v-if="loadingBalanceSummary"
+          class="py-6 text-center text-sm text-gray-500 dark:text-gray-400"
+        >
+          正在加载...
+        </div>
+        <div
+          v-else-if="lowBalanceAccounts.length === 0"
+          class="py-6 text-center text-sm text-green-600 dark:text-green-400"
+        >
+          全部正常
+        </div>
+        <div v-else class="max-h-64 space-y-2 overflow-y-auto">
+          <div
+            v-for="account in lowBalanceAccounts"
+            :key="account.accountId"
+            class="rounded-lg border border-red-200 bg-red-50 p-3 dark:border-red-900/60 dark:bg-red-900/20"
+          >
+            <div class="flex items-center justify-between gap-2">
+              <div class="truncate text-sm font-medium text-gray-900 dark:text-gray-100">
+                {{ account.name || account.accountId }}
+              </div>
+              <span
+                class="rounded bg-gray-100 px-2 py-0.5 text-xs text-gray-600 dark:bg-gray-700 dark:text-gray-300"
+              >
+                {{ getBalancePlatformLabel(account.platform) }}
+              </span>
+            </div>
+            <div class="mt-1 text-xs text-gray-600 dark:text-gray-400">
+              <span v-if="account.balance">余额: {{ account.balance.formattedAmount }}</span>
+              <span v-else
+                >今日成本: {{ formatCurrencyUsd(account.statistics?.dailyCost || 0) }}</span
+              >
+            </div>
+            <div v-if="account.quota && typeof account.quota.percentage === 'number'" class="mt-2">
+              <div
+                class="mb-1 flex items-center justify-between text-xs text-gray-600 dark:text-gray-400"
+              >
+                <span>配额使用</span>
+                <span class="text-red-600 dark:text-red-400">
+                  {{ account.quota.percentage.toFixed(1) }}%
+                </span>
+              </div>
+              <div class="h-2 w-full rounded-full bg-gray-200 dark:bg-gray-700">
+                <div
+                  class="h-2 rounded-full bg-red-500"
+                  :style="{ width: `${Math.min(100, account.quota.percentage)}%` }"
+                ></div>
+              </div>
+            </div>
+          </div>
+        </div>
+      </div>
+    </div>
+
     <!-- Token统计和性能指标 -->
     <div
       class="mb-4 grid grid-cols-1 gap-3 sm:mb-6 sm:grid-cols-2 sm:gap-4 md:mb-8 md:gap-6 lg:grid-cols-4"
@@ -681,6 +780,8 @@ import { ref, onMounted, onUnmounted, watch, nextTick, computed } from 'vue'
 import { storeToRefs } from 'pinia'
 import { useDashboardStore } from '@/stores/dashboard'
 import { useThemeStore } from '@/stores/theme'
+import { apiClient } from '@/config/api'
+import { showToast } from '@/utils/toast'
 import Chart from 'chart.js/auto'
 
 const dashboardStore = useDashboardStore()
@@ -732,6 +833,97 @@ const accountGroupOptions = [
 
 const accountTrendUpdating = ref(false)
 
+// 余额/配额汇总
+const balanceSummary = ref({
+  totalBalance: 0,
+  totalCost: 0,
+  lowBalanceCount: 0,
+  platforms: {}
+})
+const loadingBalanceSummary = ref(false)
+const balanceSummaryUpdatedAt = ref(null)
+
+const getBalancePlatformLabel = (platform) => {
+  const map = {
+    claude: 'Claude',
+    'claude-console': 'Claude Console',
+    gemini: 'Gemini',
+    'gemini-api': 'Gemini API',
+    openai: 'OpenAI',
+    'openai-responses': 'OpenAI Responses',
+    azure_openai: 'Azure OpenAI',
+    bedrock: 'Bedrock',
+    droid: 'Droid',
+    ccr: 'CCR'
+  }
+  return map[platform] || platform
+}
+
+const lowBalanceAccounts = computed(() => {
+  const result = []
+  const platforms = balanceSummary.value?.platforms || {}
+
+  Object.entries(platforms).forEach(([platform, data]) => {
+    const list = Array.isArray(data?.accounts) ? data.accounts : []
+    list.forEach((entry) => {
+      const accountData = entry?.data
+      if (!accountData) return
+
+      const amount = accountData.balance?.amount
+      const percentage = accountData.quota?.percentage
+
+      const isLowBalance = typeof amount === 'number' && amount < 10
+      const isHighUsage = typeof percentage === 'number' && percentage > 90
+
+      if (isLowBalance || isHighUsage) {
+        result.push({
+          ...accountData,
+          name: entry?.name || accountData.accountId,
+          platform: accountData.platform || platform
+        })
+      }
+    })
+  })
+
+  return result
+})
+
+const formatCurrencyUsd = (amount) => {
+  const value = Number(amount)
+  if (!Number.isFinite(value)) return '$0.00'
+  if (value >= 1) return `$${value.toFixed(2)}`
+  if (value >= 0.01) return `$${value.toFixed(3)}`
+  return `$${value.toFixed(6)}`
+}
+
+const formatLastUpdate = (isoString) => {
+  if (!isoString) return '未知'
+  const date = new Date(isoString)
+  if (Number.isNaN(date.getTime())) return '未知'
+  return date.toLocaleTimeString('zh-CN', { hour: '2-digit', minute: '2-digit' })
+}
+
+const loadBalanceSummary = async () => {
+  loadingBalanceSummary.value = true
+  try {
+    const response = await apiClient.get('/admin/accounts/balance/summary')
+    if (response?.success) {
+      balanceSummary.value = response.data || {
+        totalBalance: 0,
+        totalCost: 0,
+        lowBalanceCount: 0,
+        platforms: {}
+      }
+      balanceSummaryUpdatedAt.value = new Date().toISOString()
+    }
+  } catch (error) {
+    console.debug('加载余额汇总失败:', error)
+    showToast('加载余额汇总失败', 'error')
+  } finally {
+    loadingBalanceSummary.value = false
+  }
+}
+
 // 自动刷新相关
 const autoRefreshEnabled = ref(false)
 const autoRefreshInterval = ref(30) // 秒
@@ -1488,7 +1680,7 @@ async function refreshAllData() {
 
   isRefreshing.value = true
   try {
-    await Promise.all([loadDashboardData(), refreshChartsData()])
+    await Promise.all([loadDashboardData(), refreshChartsData(), loadBalanceSummary()])
   } finally {
     isRefreshing.value = false
   }