fix(web): 仪表盘 curl 示例模型名改用真实可用模型

硬编码的 gpt-test 让快速开始示例照抄必失败。并发拉取 /user/models
取第一个可用模型，拿不到时退回占位符。

web/src/views/console/DashboardView.vue

@@ -1,5 +1,5 @@
 <script setup lang="ts">
-import { onMounted, ref } from 'vue'
+import { computed, onMounted, ref } from 'vue'
 import { http, errMsg } from '@/api/client'
 import { useToastStore } from '@/stores/toast'
 import { fmtMoney, fmtNum, fmtCost, fmtTime } from '@/lib/format'
@@ -19,13 +19,16 @@ const monthCost = ref(0)
 const models = ref(0)
 const trend = ref<{ label: string; value: number }[]>([])
 const logs = ref<UsageLog[]>([])
+// curl 示例里的 model 用真实可用模型（拿不到时退占位符），避免示例跑不通
+const exampleModel = ref('<your-model>')
 
 async function load() {
   try {
-    const [b, s, l] = await Promise.all([
+    const [b, s, l, m] = await Promise.all([
       http.get('/user/balance'),
       http.get('/usage/stats?group=day&from=' + daysAgo(13)),
       http.get('/usage/logs?page_size=8'),
+      http.get('/user/models').catch(() => null),
     ])
     const d = b.data.data
     balance.value = d.balance
@@ -34,6 +37,8 @@ async function load() {
     models.value = d.models_available
     trend.value = s.data.data.items.map((x: { date: string; cost: number }) => ({ label: x.date.slice(5), value: x.cost }))
     logs.value = l.data.data.items
+    const items = m?.data?.data?.items as string[] | undefined
+    if (items?.length) exampleModel.value = items[0]
   } catch (e) {
     toast.err(errMsg(e))
   } finally {
@@ -46,12 +51,14 @@ function daysAgo(n: number): string {
   return d.toISOString().slice(0, 10)
 }
 
-// 快速开始：Base URL 用浏览器当前 host（兼容端点），curl 示例
+// 快速开始：Base URL 用浏览器当前 host（兼容端点），curl 示例；模型名跟随可用列表
 const baseURL = `${window.location.origin}/v1`
-const curlCmd = `curl ${baseURL}/chat/completions \\
+const curlCmd = computed(
+  () => `curl ${baseURL}/chat/completions \\
   -H "Authorization: Bearer sk-ot-xxxx" \\
   -H "Content-Type: application/json" \\
-  -d '{"model":"gpt-test","stream":true,"messages":[{"role":"user","content":"hi"}]}'`
+  -d '{"model":"${exampleModel.value}","stream":true,"messages":[{"role":"user","content":"hi"}]}'`,
+)
 const copied = ref('')
 
 async function copy(text: string, key: string) {