前端: 仪表盘快速开始卡片 + 移动端适配 + 主页 curl 用浏览器 host

- 仪表盘底部新增「快速开始」：Base URL（浏览器 host）+ 协议徽标 + curl 示例（可复制）
- 最近请求改为响应式两行（模型+状态 / token·成本·时间），窄屏不再挤压
- 主页调用演示改用 window.location.origin，去掉写死的 api.openteam.dev

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

web/src/views/LandingView.vue

@@ -2,6 +2,10 @@
 import { useAuthStore } from '@/stores/auth'
 import ThemeToggle from '@/components/ui/ThemeToggle.vue'
 const auth = useAuthStore()
+
+// 调用演示用浏览器当前 host（兼容端点），避免写死域名
+const host = window.location.host
+const baseURL = `${window.location.origin}/v1`
 </script>
 
 <template>
@@ -70,11 +74,11 @@ const auth = useAuthStore()
           <div class="flex items-center gap-1.5 border-b border-edge px-4 py-2.5">
             <span class="size-2.5 rounded-full bg-surface2" />
             <span class="size-2.5 rounded-full bg-surface2" />
-            <span class="ml-2 text-muted">curl api.openteam.dev</span>
+            <span class="ml-2 text-muted">curl {{ host }}</span>
           </div>
           <div class="space-y-3 p-4 leading-relaxed">
             <div>
-              <p class="text-muted"><span class="text-accent">$</span> curl https://api.openteam.dev/v1/chat/completions</p>
+              <p class="text-muted"><span class="text-accent">$</span> curl {{ baseURL }}/chat/completions</p>
               <p class="text-muted">  -H <span class="text-accent">"Authorization: Bearer sk-..."</span> \</p>
               <p class="text-muted">  -d <span class="text-ink">'{"model": "claude-sonnet-5", "messages": [{"role": "user", "content": "你好"}]}'</span></p>
             </div>