feat(portal): mount PuroLocaleSwitcher in Landing/Docs/AuthLayout

frontend/src/components/layout/AuthLayout.vue

@@ -2,6 +2,10 @@
   <div class="auth-shell" :class="{ 'auth-shell-split': hasNarrative }">
     <div class="bg-glow soft"></div>
 
+    <div v-if="hasNarrative" class="auth-locale-corner">
+      <PuroLocaleSwitcher />
+    </div>
+
     <!-- LEFT: Narrative (split mode only, hidden on mobile) -->
     <aside v-if="hasNarrative" class="auth-narrative">
       <slot name="narrative"></slot>
@@ -42,6 +46,7 @@
 import { computed, onMounted, useSlots } from 'vue'
 import { useAppStore } from '@/stores'
 import { sanitizeUrl } from '@/utils/url'
+import PuroLocaleSwitcher from '@/components/puro/PuroLocaleSwitcher.vue'
 
 const appStore = useAppStore()
 
@@ -78,6 +83,12 @@ onMounted(() => {
   font-family: var(--font-sans);
   min-height: 100vh;
 }
+.auth-shell-split .auth-locale-corner {
+  position: absolute;
+  top: 24px;
+  right: 24px;
+  z-index: 20;
+}
 @media (max-width: 900px) {
   .auth-shell-split {
     grid-template-columns: 1fr;

frontend/src/views/docs/DocsView.vue

@@ -11,13 +11,14 @@
           <span>PURO AI</span>
         </router-link>
         <div class="nav-links">
-          <router-link to="/">首页</router-link>
+          <router-link to="/">产品</router-link>
-          <a href="#codex">Codex</a>
+          <router-link to="/pricing">定价</router-link>
-          <a href="#claude-code">Claude Code</a>
+          <router-link to="/docs" class="active">文档</router-link>
-          <a href="#curl">curl</a>
         </div>
         <div class="nav-cta">
-          <router-link to="/login" class="btn btn-primary">登录 →</router-link>
+          <PuroLocaleSwitcher />
+          <router-link to="/login" class="btn btn-ghost">登录</router-link>
+          <router-link to="/register" class="btn btn-primary">注册</router-link>
         </div>
       </div>
     </nav>
@@ -251,8 +252,8 @@ requires_openai_auth = <span class="kw">true</span></code></pre>
 </template>
 
 <script setup lang="ts">
-// DocsView — public quickstart documentation
+import PuroLocaleSwitcher from '@/components/puro/PuroLocaleSwitcher.vue'
-// Route: /docs (no auth required)
+
 async function copyCode(ev: MouseEvent) {
   const button = ev.currentTarget as HTMLButtonElement
   const panel = button.closest('.code-panel')

frontend/src/views/landing/LandingView.vue

@@ -17,6 +17,7 @@
           <a href="/docs">文档</a>
         </div>
         <div class="nav-cta">
+          <PuroLocaleSwitcher />
           <router-link to="/login" class="btn btn-ghost">登录</router-link>
           <router-link to="/register" class="btn btn-primary">免费试用 →</router-link>
         </div>
@@ -329,8 +330,7 @@ requires_openai_auth = <span class="kw">true</span></code></pre>
 </template>
 
 <script setup lang="ts">
-// LandingView — public marketing landing page for PURO AI
+import PuroLocaleSwitcher from '@/components/puro/PuroLocaleSwitcher.vue'
-// Rendered at `/` when user is unauthenticated (see router/index.ts)
 </script>
 
 <style scoped>