diff --git a/src/App.test.ts b/src/App.test.ts
index bebec99..0841ca1 100644
--- a/src/App.test.ts
+++ b/src/App.test.ts
@@ -1,10 +1,18 @@
 import { flushPromises, mount } from '@vue/test-utils'
+import { computed, ref } from 'vue'
 import { beforeEach, describe, expect, it, vi } from 'vitest'
 import App from './App.vue'
 import { createEmptyBook } from './domain/teachingDesign'
 import * as booksApi from './services/booksApi'
 
 vi.mock('./services/booksApi')
+vi.mock('./composables/useAuth', () => ({
+  useAuth: () => ({
+    isLoggedIn: computed(() => true),
+    fetchMe: vi.fn(),
+    user: ref(null),
+  }),
+}))
 
 describe('App', () => {
   beforeEach(() => {
@@ -17,7 +25,7 @@ describe('App', () => {
     const wrapper = mount(App)
     await flushPromises()
 
-    expect(wrapper.text()).toContain('教学设计整本')
+    expect(wrapper.text()).toContain('教学设计')
     expect(wrapper.text()).toContain('新建整本')
   })
 
@@ -61,6 +69,6 @@ describe('App', () => {
     await wrapper.get('[data-testid="back"]').trigger('click')
     await flushPromises()
 
-    expect(wrapper.text()).toContain('教学设计整本')
+    expect(wrapper.text()).toContain('教学设计')
   })
 })
diff --git a/src/App.vue b/src/App.vue
index 6ff8242..6b5d7d3 100644
--- a/src/App.vue
+++ b/src/App.vue
@@ -1,20 +1,48 @@
 <script setup lang="ts">
-import { ref } from 'vue'
+import { onMounted, ref } from 'vue'
+import AdminPage from './components/AdminPage.vue'
 import BookListPage from './components/BookListPage.vue'
+import LoginPage from './components/LoginPage.vue'
 import WorkspaceView from './components/WorkspaceView.vue'
+import { useAuth } from './composables/useAuth'
 
+const { isLoggedIn, fetchMe } = useAuth()
 const currentBookId = ref<string | null>(null)
+const showAdmin = ref(false)
+
+onMounted(async () => {
+  await fetchMe()
+})
 
 function openBook(id: string): void {
   currentBookId.value = id
+  showAdmin.value = false
 }
 
 function backToList(): void {
   currentBookId.value = null
 }
+
+function openAdmin(): void {
+  showAdmin.value = true
+  currentBookId.value = null
+}
+
+function closeAdmin(): void {
+  showAdmin.value = false
+}
 </script>
 
 <template>
-  <BookListPage v-if="!currentBookId" @open="openBook" />
-  <WorkspaceView v-else :key="currentBookId" :book-id="currentBookId" @back="backToList" />
+  <LoginPage v-if="!isLoggedIn" @success="fetchMe" />
+  <template v-else>
+    <AdminPage v-if="showAdmin" @back="closeAdmin" />
+    <WorkspaceView
+      v-else-if="currentBookId"
+      :key="currentBookId"
+      :book-id="currentBookId"
+      @back="backToList"
+    />
+    <BookListPage v-else @open="openBook" @admin="openAdmin" />
+  </template>
 </template>
diff --git a/src/components/AdminPage.vue b/src/components/AdminPage.vue
new file mode 100644
index 0000000..9226ef5
--- /dev/null
+++ b/src/components/AdminPage.vue
@@ -0,0 +1,4 @@
+<script setup lang="ts">
+defineEmits<{ back: [] }>()
+</script>
+<template><div>Admin placeholder</div></template>