refactor: 重新设计用量页布局并新增延迟健康列

- /admin/usage 明细区收进单卡片：三个下划线 tab(用量明细/错误请求/用户排行) + 自适应筛选栏 + 内容
- 用户 Token 排行收编为第三个 tab：去掉独立邮箱搜索，懒挂载，点击行下钻回用量明细并回显用户
- 首Token/耗时合并为延迟列(首字/总耗时)：阈值 10s/30s/60s 与 1min/3min/5min 四档配色，色条上下两段短渐变过渡(from-40% to-60%)，管理端与用户端 /usage 共用
- 时长格式 ≥1min 简化为 Xm Ys、≥1h 为 Xh Ym
- UsageFilters/UsageTable/OpsErrorLogTable 增加 flat 嵌入模式(默认关闭不影响其他使用方)

Author: Wei-Shaw

frontend/src/components/admin/usage/UsageFilters.vue

@@ -1,5 +1,5 @@
 <template>
-  <div class="card p-6">
+  <div :class="flat ? 'p-4 sm:p-6' : 'card p-6'">
     <!-- Toolbar: left filters (multi-line) + right actions -->
     <div class="flex flex-wrap items-end justify-between gap-4">
       <!-- Left: filters (allowed to wrap to multiple rows) -->
@@ -133,8 +133,8 @@
           <Select v-model="filters.billing_type" :options="billingTypeOptions" @change="emitChange" />
         </div>
 
-        <!-- Billing Mode Filter (usage only) -->
-        <div v-if="mode !== 'errors'" class="w-full sm:w-auto sm:min-w-[200px]">
+        <!-- Billing Mode Filter (usage only；用户排行的 user-breakdown 接口不支持该维度) -->
+        <div v-if="mode === 'usage'" class="w-full sm:w-auto sm:min-w-[200px]">
           <label class="input-label">{{ t('admin.usage.billingMode') }}</label>
           <Select v-model="filters.billing_mode" :options="billingModeOptions" @change="emitChange" />
         </div>
@@ -174,7 +174,7 @@
           {{ t('common.reset') }}
         </button>
         <slot name="after-reset" />
-        <template v-if="mode !== 'errors'">
+        <template v-if="mode === 'usage'">
           <button type="button" @click="$emit('cleanup')" class="btn btn-danger">
             {{ t('admin.usage.cleanup.button') }}
           </button>
@@ -204,13 +204,19 @@ interface Props {
   endDate: string
   showActions?: boolean
   modelOptions?: string[]
-  /** errors 模式:隐藏用量专属字段/按钮,显示错误类型+状态码(错误请求 tab 用) */
-  mode?: 'usage' | 'errors'
+  /**
+   * errors 模式:隐藏用量专属字段/按钮,显示错误类型+状态码(错误请求 tab 用)
+   * ranking 模式:同 usage 但隐藏计费模式筛选与清理/导出按钮(用户排行 tab 用)
+   */
+  mode?: 'usage' | 'errors' | 'ranking'
+  /** 嵌入统一卡片内使用：去掉自身卡片外观 */
+  flat?: boolean
 }
 
 const props = withDefaults(defineProps<Props>(), {
   showActions: true,
-  mode: 'usage'
+  mode: 'usage',
+  flat: false
 })
 const emit = defineEmits([
   'update:modelValue',
@@ -485,4 +491,13 @@ onMounted(async () => {
 onUnmounted(() => {
   document.removeEventListener('click', onDocumentClick)
 })
+
+// 供外部(如用户排行下钻)在程序化设置 user_id 后回显选中的用户邮箱
+const setUserKeyword = (email: string) => {
+  userKeyword.value = email
+  userResults.value = []
+  showUserDropdown.value = false
+}
+
+defineExpose({ setUserKeyword })
 </script>

frontend/src/components/admin/usage/UsageTable.vue

@@ -1,5 +1,5 @@
 <template>
-  <div class="card overflow-hidden">
+  <div :class="flat ? '' : 'card overflow-hidden'">
     <div
       v-if="showIpGeoToolbar"
       class="flex items-center justify-end gap-2 border-b border-gray-200 px-4 py-2 dark:border-dark-700"
@@ -185,13 +185,24 @@
           </div>
         </template>
 
-        <template #cell-first_token="{ row }">
-          <span v-if="row.first_token_ms != null" class="text-sm text-gray-600 dark:text-gray-400">{{ formatDuration(row.first_token_ms) }}</span>
-          <span v-else class="text-sm text-gray-400 dark:text-gray-500">-</span>
-        </template>
-
-        <template #cell-duration="{ row }">
-          <span class="text-sm text-gray-600 dark:text-gray-400">{{ formatDuration(row.duration_ms) }}</span>
+        <!-- 合并首字/总耗时的健康度列：左侧色条上端随首字档、下端随总耗时档，中段(40%-60%)短渐变过渡，便于纵向扫视整体健康状况 -->
+        <template #cell-latency="{ row }">
+          <div class="flex items-stretch gap-2">
+            <span
+              class="w-1 shrink-0 rounded-full"
+              :class="row.first_token_ms != null
+                ? ['bg-gradient-to-b from-40% to-60%', LATENCY_BAR_FROM_CLASSES[firstTokenSeverity(row.first_token_ms)], LATENCY_BAR_TO_CLASSES[durationSeverity(row.duration_ms ?? 0)]]
+                : LATENCY_BAR_CLASSES[durationSeverity(row.duration_ms ?? 0)]"
+              aria-hidden="true"
+            ></span>
+            <div class="grid grid-cols-[max-content_max-content] items-baseline gap-x-2 gap-y-0.5 text-xs">
+              <span class="text-gray-400 dark:text-gray-500">{{ t('usage.latencyFirstToken') }}</span>
+              <span v-if="row.first_token_ms != null" class="font-medium tabular-nums" :class="LATENCY_TEXT_CLASSES[firstTokenSeverity(row.first_token_ms)]">{{ formatDuration(row.first_token_ms) }}</span>
+              <span v-else class="text-gray-400 dark:text-gray-500">-</span>
+              <span class="text-gray-400 dark:text-gray-500">{{ t('usage.latencyDuration') }}</span>
+              <span class="font-medium tabular-nums" :class="LATENCY_TEXT_CLASSES[durationSeverity(row.duration_ms ?? 0)]">{{ formatDuration(row.duration_ms) }}</span>
+            </div>
+          </div>
         </template>
 
         <template #cell-created_at="{ value }">
@@ -430,6 +441,14 @@ import { formatCacheTokens, formatMultiplier } from '@/utils/formatters'
 import { formatTokenPricePerMillion } from '@/utils/usagePricing'
 import { getUsageServiceTierLabel } from '@/utils/usageServiceTier'
 import { resolveUsageRequestType } from '@/utils/usageRequestType'
+import {
+  LATENCY_BAR_CLASSES,
+  LATENCY_BAR_FROM_CLASSES,
+  LATENCY_BAR_TO_CLASSES,
+  LATENCY_TEXT_CLASSES,
+  durationSeverity,
+  firstTokenSeverity,
+} from '@/utils/latencyHealth'
 import {
   BILLING_MODE_TOKEN,
   getBillingModeLabel,
@@ -474,6 +493,8 @@ interface Props {
   defaultSortOrder?: 'asc' | 'desc'
   showAccountBilling?: boolean
   showUpstreamEndpoint?: boolean
+  /** 嵌入统一卡片内使用：去掉自身卡片外观 */
+  flat?: boolean
 }
 
 const props = withDefaults(defineProps<Props>(), {
@@ -482,7 +503,8 @@ const props = withDefaults(defineProps<Props>(), {
   defaultSortKey: '',
   defaultSortOrder: 'asc',
   showAccountBilling: true,
-  showUpstreamEndpoint: true
+  showUpstreamEndpoint: true,
+  flat: false
 })
 const emit = defineEmits<{
   userClick: [userID: number, email?: string]
@@ -552,10 +574,14 @@ const formatUserAgent = (ua: string): string => {
   return ua
 }
 
+// 超过 1 分钟简化为 "Xm Ys"，免去人工换算（超过 1 小时再进位为 "Xh Ym"）
 const formatDuration = (ms: number | null | undefined): string => {
   if (ms == null) return '-'
   if (ms < 1000) return `${ms}ms`
-  return `${(ms / 1000).toFixed(2)}s`
+  if (ms < 60_000) return `${(ms / 1000).toFixed(2)}s`
+  const totalSec = Math.round(ms / 1000)
+  if (totalSec < 3600) return `${Math.floor(totalSec / 60)}m ${totalSec % 60}s`
+  return `${Math.floor(totalSec / 3600)}h ${Math.floor((totalSec % 3600) / 60)}m`
 }
 
 // Cost tooltip functions

frontend/src/components/admin/usage/UserTokenRanking.vue

@@ -1,99 +1,91 @@
 <template>
-  <div class="card p-4">
-    <!-- Header -->
-    <div class="mb-3 flex flex-wrap items-center gap-3">
-      <h3 class="text-sm font-semibold text-gray-800 dark:text-gray-100">
-        {{ t('admin.usage.tokenRanking.title') }}
-      </h3>
-      <span class="text-xs text-gray-400">{{ t('admin.usage.tokenRanking.subtitle') }}</span>
-      <div class="ml-auto flex flex-wrap items-center gap-2">
-        <input
-          v-model="search"
-          type="text"
-          class="input h-8 w-44 text-sm"
-          :placeholder="t('admin.usage.tokenRanking.searchPlaceholder')"
-        />
+  <!-- 用量页"用户排行"tab 内容：无卡片外观，依赖父级统一卡片；筛选/时间范围复用页面级筛选栏 -->
+  <div>
+    <!-- Toolbar -->
+    <div class="flex flex-wrap items-center justify-between gap-3 border-b border-gray-100 px-4 py-3 dark:border-dark-700/50 sm:px-6">
+      <p class="text-xs text-gray-400 dark:text-gray-500">{{ t('admin.usage.tokenRanking.subtitle') }}</p>
+      <div class="flex items-center gap-3">
+        <span v-if="!loading && items.length > 0" class="text-xs text-gray-400 dark:text-gray-500">
+          {{ t('admin.usage.tokenRanking.userCount', { count: items.length }) }}
+        </span>
         <div class="w-28">
           <Select v-model="limit" :options="limitOptions" @change="load" />
         </div>
-        <button
-          type="button"
-          class="btn btn-secondary h-8 px-2"
-          :title="t('common.refresh')"
-          @click="load"
-        >
-          <Icon name="refresh" size="sm" :class="{ 'animate-spin': loading }" />
-        </button>
       </div>
     </div>
 
     <!-- Table -->
     <div class="overflow-x-auto">
-      <table class="w-full text-sm">
-        <thead>
-          <tr class="border-b border-gray-100 text-xs text-gray-500 dark:border-gray-700 dark:text-gray-400">
-            <th class="w-10 py-2 pr-2 text-left font-medium">#</th>
-            <th class="py-2 pr-2 text-left font-medium">{{ t('admin.usage.tokenRanking.columns.user') }}</th>
+      <table class="w-full min-w-max divide-y divide-gray-200 dark:divide-dark-700">
+        <thead class="bg-gray-50 dark:bg-dark-800">
+          <tr>
+            <th class="w-16 px-4 py-3 text-left text-xs font-medium uppercase tracking-wider text-gray-500 dark:text-dark-400 sm:px-6">#</th>
+            <th class="px-4 py-3 text-left text-xs font-medium uppercase tracking-wider text-gray-500 dark:text-dark-400">
+              {{ t('admin.usage.tokenRanking.columns.user') }}
+            </th>
             <th
               v-for="col in sortableColumns"
               :key="col.key"
-              class="cursor-pointer select-none py-2 pl-2 text-right font-medium hover:text-primary-500"
-              :class="{ 'text-primary-600 dark:text-primary-400': sortBy === col.key }"
+              class="cursor-pointer select-none whitespace-nowrap px-4 py-3 text-right text-xs font-medium uppercase tracking-wider transition-colors hover:bg-gray-100 dark:hover:bg-dark-700"
+              :class="sortBy === col.key ? 'text-primary-600 dark:text-primary-400' : 'text-gray-500 dark:text-dark-400'"
               @click="setSort(col.key)"
             >
               {{ t(col.label) }}
               <span v-if="sortBy === col.key" aria-hidden="true">↓</span>
             </th>
           </tr>
         </thead>
-        <tbody>
+        <tbody class="divide-y divide-gray-200 bg-white dark:divide-dark-700 dark:bg-dark-900">
           <tr v-if="loading">
-            <td :colspan="sortableColumns.length + 2" class="py-8 text-center">
+            <td :colspan="sortableColumns.length + 2" class="py-12 text-center">
               <LoadingSpinner />
             </td>
           </tr>
-          <tr v-else-if="displayItems.length === 0">
-            <td :colspan="sortableColumns.length + 2" class="py-8 text-center text-sm text-gray-400">
+          <tr v-else-if="items.length === 0">
+            <td :colspan="sortableColumns.length + 2" class="py-12 text-center text-sm text-gray-400">
               {{ t('admin.dashboard.noDataAvailable') }}
             </td>
           </tr>
           <tr
-            v-for="(item, index) in displayItems"
+            v-for="(item, index) in items"
             v-else
             :key="item.user_id"
-            class="cursor-pointer border-b border-gray-50 transition-colors hover:bg-gray-50 dark:border-gray-800 dark:hover:bg-dark-700/40"
+            class="cursor-pointer transition-colors hover:bg-gray-50 dark:hover:bg-dark-700/40"
+            :title="t('admin.usage.tokenRanking.rowHint')"
             @click="$emit('select-user', item.user_id, item.email)"
           >
-            <td class="py-2 pr-2 text-gray-400">{{ index + 1 }}</td>
-            <td class="max-w-[220px] truncate py-2 pr-2 text-gray-700 dark:text-gray-200" :title="item.email">
+            <td class="px-4 py-3 sm:px-6">
+              <span
+                v-if="index < 3"
+                class="inline-flex h-6 w-6 items-center justify-center rounded-full text-xs font-semibold"
+                :class="RANK_BADGE_CLASSES[index]"
+              >{{ index + 1 }}</span>
+              <span v-else class="inline-block w-6 text-center text-sm tabular-nums text-gray-400">{{ index + 1 }}</span>
+            </td>
+            <td class="max-w-[260px] truncate px-4 py-3 text-sm font-medium text-gray-700 dark:text-gray-200" :title="item.email">
               {{ item.email || `User #${item.user_id}` }}
+              <span class="ml-1 font-normal text-gray-400 dark:text-gray-500">#{{ item.user_id }}</span>
             </td>
-            <td class="py-2 pl-2 text-right text-gray-500 dark:text-gray-400">{{ item.requests.toLocaleString() }}</td>
-            <td class="py-2 pl-2 text-right text-gray-500 dark:text-gray-400">{{ fmtTokens(item.input_tokens) }}</td>
-            <td class="py-2 pl-2 text-right text-gray-500 dark:text-gray-400">{{ fmtTokens(item.output_tokens) }}</td>
-            <td class="py-2 pl-2 text-right text-gray-500 dark:text-gray-400">{{ fmtTokens(item.cache_tokens) }}</td>
-            <td class="py-2 pl-2 text-right font-medium text-gray-800 dark:text-gray-100">{{ fmtTokens(item.total_tokens) }}</td>
-            <td class="py-2 pl-2 text-right text-green-600 dark:text-green-400">${{ fmtCost(item.actual_cost) }}</td>
+            <td class="whitespace-nowrap px-4 py-3 text-right text-sm tabular-nums text-gray-500 dark:text-gray-400">{{ item.requests.toLocaleString() }}</td>
+            <td class="whitespace-nowrap px-4 py-3 text-right text-sm tabular-nums text-gray-500 dark:text-gray-400">{{ fmtTokens(item.input_tokens) }}</td>
+            <td class="whitespace-nowrap px-4 py-3 text-right text-sm tabular-nums text-gray-500 dark:text-gray-400">{{ fmtTokens(item.output_tokens) }}</td>
+            <td class="whitespace-nowrap px-4 py-3 text-right text-sm tabular-nums text-gray-500 dark:text-gray-400">{{ fmtTokens(item.cache_tokens) }}</td>
+            <td class="whitespace-nowrap px-4 py-3 text-right text-sm font-medium tabular-nums text-gray-900 dark:text-gray-100">{{ fmtTokens(item.total_tokens) }}</td>
+            <td class="whitespace-nowrap px-4 py-3 text-right text-sm font-medium tabular-nums text-green-600 dark:text-green-400">${{ fmtCost(item.actual_cost) }}</td>
           </tr>
         </tbody>
       </table>
     </div>
-
-    <!-- Footer -->
-    <div v-if="!loading && items.length > 0" class="mt-2 text-right text-xs text-gray-400">
-      {{ t('admin.usage.tokenRanking.userCount', { count: displayItems.length }) }}
-    </div>
   </div>
 </template>
 
 <script setup lang="ts">
-import { ref, computed, watch } from 'vue'
+import { ref, watch } from 'vue'
 import { useI18n } from 'vue-i18n'
 import { getUserBreakdown, type UserBreakdownParams } from '@/api/admin/dashboard'
 import { formatCompactNumber, formatCostFixed } from '@/utils/format'
 import type { UserBreakdownItem } from '@/types'
 import Select from '@/components/common/Select.vue'
-import Icon from '@/components/icons/Icon.vue'
 import LoadingSpinner from '@/components/common/LoadingSpinner.vue'
 
 const props = defineProps<{
@@ -124,19 +116,19 @@ const limitOptions = [
   { value: 200, label: 'Top 200' },
 ]
 
+// 前三名金/银/铜徽章
+const RANK_BADGE_CLASSES = [
+  'bg-amber-100 text-amber-700 dark:bg-amber-500/20 dark:text-amber-400',
+  'bg-gray-200 text-gray-600 dark:bg-gray-500/20 dark:text-gray-300',
+  'bg-orange-100 text-orange-700 dark:bg-orange-500/20 dark:text-orange-400',
+]
+
 const items = ref<UserBreakdownItem[]>([])
 const loading = ref(false)
 const sortBy = ref<SortKey>('total_tokens')
 const limit = ref(50)
-const search = ref('')
 let reqSeq = 0
 
-const displayItems = computed(() => {
-  const kw = search.value.trim().toLowerCase()
-  if (!kw) return items.value
-  return items.value.filter((u) => (u.email || `user #${u.user_id}`).toLowerCase().includes(kw))
-})
-
 const fmtTokens = (v: number) => formatCompactNumber(v)
 const fmtCost = (v: number) => formatCostFixed(v, 4)