导航: 统一分区侧栏 + 新增用量统计页

- ShellLayout 按所在分区显示独立菜单:
  用户控制台(/console) 与 管理后台(/admin) 不混排, 各带跨区跳转(管理→/返回控制台→)
- /console 与 /admin 共用 ShellLayout, 移除 ConsoleLayout/AdminLayout 薄包装
- 新增 /admin/usage 用量统计页(全局请求明细, 按模型过滤+分页)

Co-Authored-By: Claude <noreply@anthropic.com>

web/src/views/admin/UsageView.vue

@@ -0,0 +1,104 @@
+<script setup lang="ts">
+import { onMounted, ref } from 'vue'
+import { http, errMsg } from '@/api/client'
+import { useToastStore } from '@/stores/toast'
+import { protocolName } from '@/lib/protocol'
+import { fmtCost, fmtTime } from '@/lib/format'
+import Badge from '@/components/ui/Badge.vue'
+import Button from '@/components/ui/Button.vue'
+import type { UsageLog } from '@/types'
+
+const toast = useToastStore()
+const logs = ref<UsageLog[]>([])
+const total = ref(0)
+const page = ref(1)
+const modelFilter = ref('')
+const pageSize = 15
+
+async function load() {
+  try {
+    const { data } = await http.get(
+      `/admin/usage?page=${page.value}&page_size=${pageSize}${modelFilter.value ? '&model=' + modelFilter.value : ''}`,
+    )
+    logs.value = data.data.items
+    total.value = data.data.total
+  } catch (e) {
+    toast.err(errMsg(e))
+  }
+}
+
+function search() {
+  page.value = 1
+  load()
+}
+
+function goPage(p: number) {
+  page.value = p
+  load()
+}
+
+onMounted(load)
+</script>
+
+<template>
+  <div class="mx-auto max-w-6xl">
+    <div class="mb-6 flex items-center justify-between">
+      <div>
+        <h1 class="text-lg font-semibold">用量统计</h1>
+        <p class="text-sm text-muted">全局请求明细与成本</p>
+      </div>
+      <div class="flex gap-2">
+        <input
+          v-model="modelFilter"
+          placeholder="按模型过滤"
+          class="h-10 w-48 rounded-md border border-edge2 bg-surface px-3 font-mono text-xs outline-none focus:border-accent"
+          @keyup.enter="search"
+        />
+        <Button variant="ghost" @click="search">搜索</Button>
+      </div>
+    </div>
+
+    <div class="card">
+      <div class="overflow-x-auto">
+        <table class="w-full text-sm">
+          <thead>
+            <tr class="border-b border-edge text-left text-xs text-muted">
+              <th scope="col" class="px-4 py-2.5 font-medium">用户</th>
+              <th scope="col" class="px-4 py-2.5 font-medium">模型</th>
+              <th scope="col" class="px-4 py-2.5 font-medium">API 格式</th>
+              <th scope="col" class="px-4 py-2.5 font-medium">Token 入/出</th>
+              <th scope="col" class="px-4 py-2.5 font-medium">成本</th>
+              <th scope="col" class="px-4 py-2.5 font-medium">耗时</th>
+              <th scope="col" class="px-4 py-2.5 font-medium">状态</th>
+              <th scope="col" class="px-4 py-2.5 font-medium">时间</th>
+            </tr>
+          </thead>
+          <tbody>
+            <tr v-for="l in logs" :key="l.id" class="table-row">
+              <td class="px-4 py-2.5 text-xs text-ink">{{ l.user }}</td>
+              <td class="px-4 py-2.5 font-mono text-xs text-ink">{{ l.model }}</td>
+              <td class="px-4 py-2.5 font-mono text-xs text-muted">{{ protocolName(l.protocol) }}</td>
+              <td class="px-4 py-2.5 mono-num text-xs text-muted">{{ l.input_tokens }}/{{ l.output_tokens }}</td>
+              <td class="px-4 py-2.5 mono-num text-xs text-ink">{{ fmtCost(l.cost) }}</td>
+              <td class="px-4 py-2.5 mono-num text-xs text-muted">{{ l.latency_ms }}ms</td>
+              <td class="px-4 py-2.5">
+                <Badge :variant="l.status === 'success' ? 'ok' : 'err'">{{ l.status }}</Badge>
+              </td>
+              <td class="px-4 py-2.5 font-mono text-xs text-muted">{{ fmtTime(l.created_at) }}</td>
+            </tr>
+            <tr v-if="logs.length === 0">
+              <td colspan="8" class="px-4 py-10 text-center text-sm text-muted">暂无请求记录</td>
+            </tr>
+          </tbody>
+        </table>
+      </div>
+      <div class="flex items-center justify-between border-t border-edge px-4 py-3">
+        <span class="font-mono text-xs text-muted">共 {{ total }} 条</span>
+        <div class="flex gap-2">
+          <Button size="sm" variant="ghost" :disabled="page <= 1" @click="goPage(page - 1)">上一页</Button>
+          <Button size="sm" variant="ghost" :disabled="page * pageSize >= total" @click="goPage(page + 1)">下一页</Button>
+        </div>
+      </div>
+    </div>
+  </div>
+</template>