diff --git a/biji-qianduan/src/components/HomePage.vue b/biji-qianduan/src/components/HomePage.vue
index a1545d7..b005ea9 100644
--- a/biji-qianduan/src/components/HomePage.vue
+++ b/biji-qianduan/src/components/HomePage.vue
@@ -85,1421 +85,4 @@
                 class="search-input"
                 @keyup.enter="handleSearch"
               >
-                <template #append>
-                  <el-button @click="handleSearch">
-                    <el-icon><Search /></el-icon>
-                  </el-button>
-                </template>
-              </el-input>
-              <div v-if="userStore.isLoggedIn" class="user-actions">
-                <span class="welcome-text">欢迎, {{ userStore.userInfo?.username }}</span>
-                <el-button type="danger" @click="handleLogout">退出</el-button>
-                <el-button type="primary" @click="showUpdatePasswordDialog = true">修改密码</el-button>
-                <el-button type="warning" @click="showSystemSettingsDialog = true">系统管理</el-button>
-                <el-button type="primary" @click="showCreateNoteDialog = true">新建笔记</el-button>
-                <el-upload
-                  class="upload-btn"
-                  action=""
-                  :show-file-list="false"
-                  :before-upload="handleMarkdownUpload"
-                  accept=".md"
-                >
-                  <el-button type="success">上传Markdown</el-button>
-                </el-upload>
-              </div>
-              <div v-else class="guest-actions">
-                <el-button type="primary" @click="goToLogin">登录</el-button>
-                <el-button @click="goToRegister">注册</el-button>
-              </div>
-            </div>
-          </el-header>
-
-          <div v-if="groupMarkdownFiles.length > 0" class="file-list">
-            <el-card v-for="file in groupMarkdownFiles" :key="file.id" shadow="hover" class="file-item" :class="{ 'private-note': file.isPrivate === 1 }">
-              <div @click="previewFile(file)" class="file-title">
-                <span>{{ file.title }}</span>
-                <span class="file-group-name">{{ file.groupingName }}</span>
-                <el-icon v-if="file.isPrivate === 1 && !userStore.isLoggedIn" class="lock-icon"><Lock /></el-icon>
-              </div>
-            </el-card>
-          </div>
-          <el-empty v-else description="暂无笔记，请创建或上传" />
-        </div>
-
-        <!-- 分类创建对话框 -->
-        <el-dialog v-model="showCreateGroupDialog" title="新建分类" width="400px" @close="resetGroupForm">
-          <el-form :model="newGroupForm" :rules="groupFormRules" ref="groupFormRef" label-width="80px">
-            <el-form-item label="父级分类">
-              <el-cascader
-                  v-model="newGroupForm.parentId"
-                  :options="categoryCascaderOptions"
-                  :props="{ checkStrictly: true, emitPath: false }"
-                  clearable
-                  placeholder="不选则为一级分类"
-                  style="width: 100%;"
-              ></el-cascader>
-            </el-form-item>
-            <el-form-item label="分类名称" prop="name">
-              <el-input v-model="newGroupForm.name" autocomplete="off"></el-input>
-            </el-form-item>
-          </el-form>
-          <template #footer>
-            <el-button @click="showCreateGroupDialog = false">取消</el-button>
-            <el-button type="primary" @click="createGrouping">确定</el-button>
-          </template>
-        </el-dialog>
-
-        <!-- 笔记创建对话框 -->
-        <el-dialog v-model="showCreateNoteDialog" title="新建笔记" width="400px" @close="resetNoteForm">
-          <el-form :model="newNoteForm" :rules="noteFormRules" ref="noteFormRef" label-width="80px">
-            <el-form-item label="笔记标题" prop="title">
-              <el-input v-model="newNoteForm.title" autocomplete="off"></el-input>
-            </el-form-item>
-            <el-form-item label="选择分类" prop="groupingId">
-              <el-cascader
-                  v-model="newNoteForm.groupingId"
-                  :options="categoryTree"
-                  :props="{ checkStrictly: true, emitPath: false }"
-                  clearable
-                  placeholder="请选择笔记所属分类"
-                  style="width: 100%;"
-              ></el-cascader>
-            </el-form-item>
-            <el-form-item label="私密笔记">
-              <el-switch
-                v-model="newNoteForm.isPrivate"
-                :active-value="1"
-                :inactive-value="0"
-                active-text="私密"
-                inactive-text="公开"
-              />
-              <div class="form-item-help">私密笔记只有登录用户才能查看内容</div>
-            </el-form-item>
-          </el-form>
-          <template #footer>
-            <el-button @click="showCreateNoteDialog = false">取消</el-button>
-            <el-button type="primary" @click="createNote">确定</el-button>
-          </template>
-        </el-dialog>
-
-        <!-- 重命名对话框 -->
-        <el-dialog v-model="showRenameDialog" title="重命名" width="400px">
-          <el-input v-model="newName" placeholder="请输入新名称"></el-input>
-          <template #footer>
-            <el-button @click="showRenameDialog = false">取消</el-button>
-            <el-button type="primary" @click="handleRename">确定</el-button>
-          </template>
-        </el-dialog>
-
-        <!-- 导入选择分类对话框 -->
-        <el-dialog v-model="showSelectGroupDialog" title="选择导入的分类" width="400px">
-          <el-cascader
-              v-model="importGroupId"
-              :options="categoryTree"
-              :props="{ checkStrictly: true, emitPath: false }"
-              clearable
-              placeholder="请选择要导入的分类"
-              style="width: 100%;"
-          ></el-cascader>
-          <template #footer>
-            <el-button @click="showSelectGroupDialog = false">取消</el-button>
-            <el-button type="primary" @click="confirmImport">确定</el-button>
-          </template>
-        </el-dialog>
-
-        <!-- 移动笔记对话框 -->
-        <el-dialog v-model="showMoveNoteDialog" title="移动笔记到" width="400px">
-          <el-cascader
-              v-model="moveToGroupId"
-              :options="categoryTree"
-              :props="{ checkStrictly: true, emitPath: false }"
-              clearable
-              placeholder="请选择目标分类"
-              style="width: 100%;"
-          ></el-cascader>
-          <template #footer>
-            <el-button @click="showMoveNoteDialog = false">取消</el-button>
-            <el-button type="primary" @click="handleMoveNote">确定</el-button>
-          </template>
-        </el-dialog>
-
-        <!-- 系统管理对话框 -->
-        <el-dialog v-model="showSystemSettingsDialog" title="系统管理" width="500px">
-          <el-form label-width="120px">
-            <el-form-item label="开放注册">
-              <el-switch v-model="isRegistrationEnabled" @change="handleToggleRegistration"></el-switch>
-            </el-form-item>
-            <el-form-item label="生成注册码">
-              <el-button type="primary" @click="handleGenerateCode">生成</el-button>
-            </el-form-item>
-            <el-form-item v-if="generatedCode" label="新注册码">
-              <el-input v-model="generatedCode" readonly>
-                <template #append>
-                  <el-button @click="copyToClipboard(generatedCode)">复制</el-button>
-                </template>
-              </el-input>
-            </el-form-item>
-          </el-form>
-          <template #footer>
-            <el-button @click="showSystemSettingsDialog = false">关闭</el-button>
-          </template>
-        </el-dialog>
-
-        <!-- 修改密码对话框 -->
-        <el-dialog v-model="showUpdatePasswordDialog" title="修改密码" width="400px" @close="resetUpdatePasswordForm">
-          <el-form :model="updatePasswordForm" :rules="updatePasswordFormRules" ref="updatePasswordFormRef" label-width="100px">
-            <el-form-item label="旧密码" prop="oldPassword">
-              <el-input v-model="updatePasswordForm.oldPassword" type="password" show-password autocomplete="off"></el-input>
-            </el-form-item>
-            <el-form-item label="新密码" prop="newPassword">
-              <el-input v-model="updatePasswordForm.newPassword" type="password" show-password autocomplete="off"></el-input>
-            </el-form-item>
-            <el-form-item label="确认新密码" prop="confirmPassword">
-              <el-input v-model="updatePasswordForm.confirmPassword" type="password" show-password autocomplete="off"></el-input>
-            </el-form-item>
-          </el-form>
-          <template #footer>
-            <el-button @click="showUpdatePasswordDialog = false">取消</el-button>
-            <el-button type="primary" @click="handleUpdatePassword">确定</el-button>
-          </template>
-        </el-dialog>
-
-        <!-- 修改笔记私密状态对话框 -->
-        <el-dialog v-model="showPrivacyDialog" :title="selectedFile && selectedFile.isPrivate === 1 ? '设为公开笔记' : '设为私密笔记'" width="400px">
-          <div v-if="selectedFile">
-            <p>您确定要将笔记 <strong>"{{ selectedFile.title }}"</strong> {{ selectedFile.isPrivate === 1 ? '设为公开' : '设为私密' }}吗？</p>
-            <div class="privacy-explanation">
-              <el-icon><InfoFilled /></el-icon>
-              <span>{{ selectedFile.isPrivate === 1 ? '公开笔记：所有用户都可以查看内容' : '私密笔记：只有登录用户才能查看内容' }}</span>
-            </div>
-          </div>
-          <template #footer>
-            <el-button @click="showPrivacyDialog = false">取消</el-button>
-            <el-button type="primary" @click="handlePrivacyChange">确定</el-button>
-          </template>
-        </el-dialog>
-      </el-main>
-    </el-container>
-  </el-container>
-</template>
-
-<script setup>
-import {onMounted, ref, nextTick, watch, h, computed} from 'vue';
-import {ElMessage, ElSubMenu, ElMenuItem, ElIcon, ElMessageBox, ElTooltip} from 'element-plus';
-import Vditor from 'vditor';
-import 'vditor/dist/index.css';
-import {
-  addGroupings,
-  deleteImages, deleteMarkdown,
-  groupingAll,
-  markdownAll, markdownList,
-  Preview,
-  updateMarkdown, uploadImage,
-  searchMarkdown,
-  updateGroupingName,
-  updateMarkdownTitle,
-  deleteGrouping as apiDeleteGrouping,
-  getRecentFiles,
-  validateToken,
-  getRegistrationStatus,
-  toggleRegistration,
-  generateRegistrationCode,
-  updatePassword
-} from '@/api/CommonApi.js'
-import { Plus, Fold, Expand, Folder, Document, Search, Edit, Delete, ArrowDown, Clock, Lock, InfoFilled } from "@element-plus/icons-vue";
-import { useUserStore } from '../stores/user';
-import { useRouter } from 'vue-router';
-import { privateNoteContent } from '../utils/privateNoteContent.js';
-
-const userStore = useUserStore();
-const router = useRouter();
-const searchKeyword = ref('');
-
-const markdownFiles = ref([]);
-const categoryTree = ref([]);
-const groupMarkdownFiles = ref([]);
-const showEditor = ref(false);
-const selectedFile = ref(null);
-const activeMenu = ref('all');
-const isCollapsed = ref(false);
-const showCreateGroupDialog = ref(false);
-const showCreateNoteDialog = ref(false);
-const showRenameDialog = ref(false);
-const itemToRename = ref(null);
-const newName = ref('');
-const showSelectGroupDialog = ref(false);
-const importGroupId = ref(null);
-const fileToImport = ref(null);
-const showMoveNoteDialog = ref(false);
-const moveToGroupId = ref(null);
-const currentGroupName = ref('');
-const showSystemSettingsDialog = ref(false);
-const isRegistrationEnabled = ref(true);
-const generatedCode = ref('');
-const showUpdatePasswordDialog = ref(false);
-const showPrivacyDialog = ref(false);
-
-const groupFormRef = ref(null);
-const newGroupForm = ref({ name: '', parentId: null });
-const groupFormRules = ref({
-  name: [{ required: true, message: '请输入分类名称', trigger: 'blur' }],
-});
-
-const noteFormRef = ref(null);
-const newNoteForm = ref({
-  id: null,
-  title: '',
-  groupingId: null,
-  fileName: '',
-  content: '',
-  isPrivate: 0
-});
-const noteFormRules = ref({
-  title: [{ required: true, message: '请输入笔记标题', trigger: 'blur' }],
-  groupingId: [{ required: true, message: '请选择分类', trigger: 'change' }],
-});
-
-const updatePasswordFormRef = ref(null);
-const updatePasswordForm = ref({
-  oldPassword: '',
-  newPassword: '',
-  confirmPassword: ''
-});
-const validateConfirmPassword = (rule, value, callback) => {
-  if (value === '') {
-    callback(new Error('请再次输入新密码'));
-  } else if (value !== updatePasswordForm.value.newPassword) {
-    callback(new Error("两次输入的新密码不一致"));
-  } else {
-    callback();
-  }
-};
-const updatePasswordFormRules = ref({
-  oldPassword: [{ required: true, message: '请输入旧密码', trigger: 'blur' }],
-  newPassword: [{ required: true, message: '请输入新密码', trigger: 'blur' }, { min: 6, message: '密码长度不能少于6位', trigger: 'blur' }],
-  confirmPassword: [{ required: true, validator: validateConfirmPassword, trigger: 'blur' }]
-});
-
-const editData=ref(null)
-const imageUrls = ref([]);
-const originalImages = ref([]);
-
-const vditor = ref(null);
-const saveStatus = ref('空闲');
-let debounceTimer = null;
-
-const categoryCascaderOptions = computed(() => categoryTree.value);
-
-const initVditor = () => {
-  vditor.value = new Vditor('vditor', {
-    height: 'calc(100vh - 120px)',
-    mode: 'ir',
-    after: () => {
-      if (editData.value) {
-        vditor.value.setValue(editData.value.content);
-      }
-    },
-    input: (value) => {
-      debouncedSave(value);
-    },
-    upload: {
-      accept: 'image/*',
-      handler(files) {
-        handleImageUpload(files);
-      },
-    },
-  });
-};
-
-const buildTree = (items) => {
-  const tree = [];
-  const itemMap = new Map();
-
-  // First, map all items by their id
-  items.forEach(item => {
-    itemMap.set(String(item.id), {
-        ...item,
-        value: item.id,
-        label: item.grouping,
-        children: [], // Initialize children array
-      });
-  });
-
-  // Then, build the tree structure
-  itemMap.forEach(item => {
-    const parentId = String(item.parentId);
-    if (parentId !== '0' && itemMap.has(parentId)) {
-      const parent = itemMap.get(parentId);
-      parent.children.push(item);
-    } else {
-      // If it's a root node or an orphan, add it to the top level
-      tree.push(item);
-    }
-  });
-
-  // Helper to remove empty children arrays
-  const cleanTree = (nodes) => {
-    nodes.forEach(node => {
-      if (node.children.length === 0) {
-        delete node.children;
-      } else {
-        cleanTree(node.children);
-      }
-    });
-  };
-
-  cleanTree(tree);
-  return tree;
-};
-
-const fetchGroupings = async () => {
-  try {
-    const allCategories = await groupingAll("");
-    categoryTree.value = buildTree(allCategories || []);
-  } catch (error) {
-    console.error('获取分组失败:', error);
-    ElMessage.error('获取分组失败: ' + error.message);
-    categoryTree.value = [];
-  }
-};
-
-const selectFile = async (data) => {
-  try {
-    const files = await markdownList(data.id);
-    groupMarkdownFiles.value = files || [];
-    currentGroupName.value = data.grouping;
-    selectedFile.value = null;
-  } catch (error) {
-    ElMessage.error('获取笔记列表失败: ' + error.message);
-    groupMarkdownFiles.value = [];
-  }
-};
-
-const fetchMarkdownFiles = async () => {
-  try {
-    const files = await markdownAll();
-    markdownFiles.value = (files || []).map(file => ({
-      ...file,
-      id: String(file.id)
-    }));
-  } catch (error) {
-    ElMessage.error('获取笔记列表失败: ' + error.message);
-  }
-};
-
-const createGrouping = async () => {
-  if (!groupFormRef.value) return;
-  await groupFormRef.value.validate(async (valid) => {
-    if (valid) {
-      try {
-        const payload = {
-          grouping: newGroupForm.value.name, // 将 name 映射到 grouping
-          parentId: newGroupForm.value.parentId || 0
-        };
-        await addGroupings(payload);
-        ElMessage.success('分类创建成功');
-        showCreateGroupDialog.value = false;
-        await fetchGroupings();
-      } catch (error) {
-        ElMessage.error('创建分类失败: ' + error.message);
-      }
-    }
-  });
-};
-
-const resetGroupForm = () => {
-  newGroupForm.value = { name: '', parentId: null };
-  if (groupFormRef.value) {
-    groupFormRef.value.resetFields();
-  }
-};
-
-const createNote = async () => {
-  if (!noteFormRef.value) return;
-  await noteFormRef.value.validate(async (valid) => {
-    if (valid) {
-      try {
-        const groupingId = newNoteForm.value.groupingId;
-        if (!groupingId) {
-          ElMessage.error('必须选择一个分类');
-          return;
-        }
-        const payload = {
-          id: null,
-          title: newNoteForm.value.title,
-          groupingId: groupingId,
-          fileName: newNoteForm.value.title + '.md',
-          content: '',
-          isPrivate: newNoteForm.value.isPrivate
-        };
-        editData.value = payload;
-        showCreateNoteDialog.value = false;
-        showEditor.value = true;
-        selectedFile.value = editData.value;
-        await nextTick(() => {
-          initVditor();
-        });
-      } catch (error) {
-        ElMessage.error('创建笔记失败: ' + error.message);
-      }
-    }
-  });
-};
-
-const resetNoteForm = () => {
-  newNoteForm.value = { id: null, title: '', groupingId: null, fileName: '', content: '', isPrivate: 0 };
-  if (noteFormRef.value) {
-    noteFormRef.value.resetFields();
-  }
-};
-
-const renderMenu = (item) => {
-  const titleContent = () => h('div', { class: 'menu-item-title' }, [
-    h(ElIcon, () => h(Folder)),
-    h('span', { class: 'menu-item-text' }, item.grouping),
-    h('div', { class: 'menu-item-actions' }, [
-      h(ElIcon, { class: 'edit-icon', onClick: (e) => { e.stopPropagation(); openRenameDialog(item, 'group'); } }, () => h(Edit)),
-      h(ElIcon, { class: 'delete-icon', onClick: (e) => { e.stopPropagation(); handleDeleteGroup(item); } }, () => h(Delete))
-    ])
-  ]);
-
-  const wrappedContent = () => h(ElTooltip, {
-    content: item.grouping,
-    placement: 'right',
-    disabled: !isCollapsed.value,
-    effect: 'dark',
-    offset: 15,
-  }, {
-    default: titleContent
-  });
-
-  if (item.children && item.children.length > 0) {
-    return h(ElSubMenu, {
-      index: `group-${item.id}`,
-      popperClass: isCollapsed.value ? 'hide-popper' : ''
-    }, {
-      title: () => h('div', {
-        class: 'submenu-title-wrapper',
-        onClick: () => selectFile(item),
-        style: 'width: 100%; display: flex; align-items: center;'
-      }, [ wrappedContent() ]),
-      default: () => item.children.map(child => renderMenu(child))
-    });
-  }
-  
-  return h(ElMenuItem, { index: `group-${item.id}`, onClick: () => selectFile(item) }, {
-    default: wrappedContent
-  });
-};
-
-// 选择文件预览
-const previewFile = async (file) => {
-  if (file.id === null) {
-    editData.value = file;
-    selectedFile.value = null;
-    return;
-  }
-  try {
-    const response = await Preview(file.id);
-    const content = String(response || '');
-    selectedFile.value = {
-      ...file,
-      content: content
-    };
-    showEditor.value = false; // 确保进入预览模式
-    
-    // 如果是私密笔记且用户未登录，内容会被后端置空，这里不需要额外提示
-    // 提示信息已经在模板中通过条件渲染显示
-  } catch (error) {
-    ElMessage.error('获取笔记内容失败: ' + error.message);
-    selectedFile.value = null;
-  }
-};
-
-// 编辑笔记
-const editNote = async (file) => {
-  editData.value = file
-  originalImages.value = extractImageUrls(file.content);
-  showEditor.value = true;
-  await nextTick(() => {
-    initVditor();
-  });
-};
-
-// 修改笔记私密状态
-const handlePrivacyChange = async () => {
-  if (!selectedFile.value) return;
-  
-  try {
-    const newPrivacyStatus = selectedFile.value.isPrivate === 1 ? 0 : 1;
-    const payload = {
-      ...selectedFile.value,
-      isPrivate: newPrivacyStatus
-    };
-    
-    const updatedFile = await updateMarkdown(payload);
-    selectedFile.value = updatedFile;
-    
-    // 更新列表中的文件状态
-    const index = groupMarkdownFiles.value.findIndex(file => file.id === selectedFile.value.id);
-    if (index !== -1) {
-      groupMarkdownFiles.value[index] = updatedFile;
-    }
-    
-    showPrivacyDialog.value = false;
-    ElMessage.success(`笔记已${newPrivacyStatus === 1 ? '设为私密' : '设为公开'}`);
-  } catch (error) {
-    ElMessage.error('修改笔记状态失败: ' + error.message);
-  }
-};
-
-// 图片上传
-const handleImageUpload=async (files) => {
-  const promise = await uploadImage(files[0]);
-  if (promise.url == null) {
-    ElMessage.error(promise.msg);
-    return;
-  }
-  const url = promise.url;
-  // 从环境变量获取 baseURL，并与后端返回的 URL 路径拼接
-  const fullUrl = `${import.meta.env.VITE_API_BASE_URL}${url}`;
-  imageUrls.value.push(fullUrl);
-  vditor.value.insertValue(`![${files[0].name}](${fullUrl})`);
-}
-
-const debouncedSave = (value) => {
-  saveStatus.value = '正在输入...';
-  clearTimeout(debounceTimer);
-  debounceTimer = setTimeout(() => {
-    handleSave(value);
-  }, 2000);
-};
-
-const handleSave = async (content) => {
-  saveStatus.value = '正在保存...';
-  try {
-    // 构造一个干净的、只包含必要字段的 payload
-    const payload = {
-      id: editData.value.id, // 可能是 null，用于创建
-      title: editData.value.title,
-      groupingId: editData.value.groupingId,
-      content: content,
-      fileName: editData.value.fileName || `${editData.value.title}.md`,
-    };
-
-    // 调用后端接口
-    const response = await updateMarkdown(payload);
-
-    // 使用后端返回的完整、最新的数据更新前端状态
-    // 这对于新创建的笔记至关重要，因为它会获得一个新的 ID
-    editData.value = response;
-    
-    // 如果当前正在预览这个文件，也更新 selectedFile
-    if (selectedFile.value && (!selectedFile.value.id || selectedFile.value.id === response.id)) {
-        selectedFile.value = response;
-    }
-
-    saveStatus.value = '已保存';
-    ElMessage.success('保存成功');
-
-    // 刷新文件列表以反映更改（例如，新文件出现）
-    await fetchMarkdownFiles();
-    // 如果当前在某个分类下，也刷新该分类的列表
-    if (activeMenu.value.startsWith('group-')) {
-        const groupId = activeMenu.value.split('-');
-        await selectFile({ id: groupId, grouping: currentGroupName.value });
-    }
-
-  } catch (error) {
-    saveStatus.value = '保存失败';
-    ElMessage.error('保存失败: ' + (error.response?.data?.message || error.message));
-  }
-};
-
-const extractImageUrls = (markdown) => {
-  const regex = /!\[.*?\]\((.*?)\)/g;
-  const urls = [];
-  let match;
-  while ((match = regex.exec(markdown)) !== null) {
-    urls.push(match);
-  }
-  return urls;
-};
-
-const openRenameDialog = (item, type) => {
-  itemToRename.value = { ...item, type };
-  newName.value = type === 'file' ? item.title : item.grouping;
-  showRenameDialog.value = true;
-};
-
-const handleRename = async () => {
-  if (!newName.value.trim()) {
-    ElMessage.error('名称不能为空');
-    return;
-  }
-  try {
-    if (itemToRename.value.type === 'file') {
-      await updateMarkdownTitle({ id: itemToRename.value.id, title: newName.value });
-      if (selectedFile.value && selectedFile.value.id === itemToRename.value.id) {
-        selectedFile.value.title = newName.value;
-      }
-    } else {
-      await updateGroupingName({ id: itemToRename.value.id, grouping: newName.value });
-    }
-    ElMessage.success('重命名成功');
-    await fetchGroupings();
-    await fetchMarkdownFiles();
-  } catch (error) {
-    ElMessage.error('重命名失败: ' + error.message);
-  } finally {
-    showRenameDialog.value = false;
-  }
-};
-
-const handleDeleteGroup = (group) => {
-  ElMessageBox.confirm(
-    `确定要删除分类 “${group.grouping}” 吗？这将同时删除该分类下的所有子分类和笔记。`,
-    '警告',
-    {
-      confirmButtonText: '确定',
-      cancelButtonText: '取消',
-      type: 'warning',
-    }
-  ).then(async () => {
-    try {
-      await apiDeleteGrouping(group.id);
-      ElMessage.success('分类已删除');
-      // 删除分类后，刷新分组树并回到主视图
-      await fetchGroupings();
-      await resetToHomeView();
-    } catch (error) {
-      ElMessage.error('删除分类失败: ' + error.message);
-    }
-  }).catch(() => {
-    // 用户取消操作
-  });
-};
-
-const deleteNote = (file) => {
-  ElMessageBox.confirm(
-      `确定要删除笔记 “${file.title}” 吗？`,
-      '警告',
-      {
-        confirmButtonText: '确定',
-        cancelButtonText: '取消',
-        type: 'warning',
-      }
-  ).then(async () => {
-    try {
-      await deleteMarkdown(file.id);
-      ElMessage.success('笔记已删除');
-      selectedFile.value = null; // 关闭预览
-      // 刷新分组和主视图
-      await fetchGroupings();
-      await resetToHomeView();
-    } catch (error) {
-      ElMessage.error('删除笔记失败: ' + error.message);
-    }
-  });
-};
-
-const handleMarkdownUpload = (file) => {
-  fileToImport.value = file;
-  showSelectGroupDialog.value = true;
-  return false; // 阻止 el-upload 自动上传
-};
-
-const confirmImport = async () => {
-  if (!importGroupId.value) {
-    ElMessage.error('请选择要导入的分类');
-    return;
-  }
-  const reader = new FileReader();
-  reader.onload = async (e) => {
-    const content = e.target.result;
-    const payload = {
-      title: fileToImport.value.name.replace(/\.md$/, ''),
-      groupingId: importGroupId.value,
-      content: content,
-      fileName: fileToImport.value.name
-    };
-    try {
-      await updateMarkdown(payload);
-      ElMessage.success('Markdown 文件导入成功');
-      await fetchGroupings();
-      await fetchMarkdownFiles();
-      showSelectGroupDialog.value = false;
-    } catch (error) {
-      ElMessage.error('导入失败: ' + error.message);
-    }
-  };
-  reader.readAsText(fileToImport.value);
-};
-
-const handleMoveNote = async () => {
-  if (!moveToGroupId.value) {
-    ElMessage.error('请选择目标分类');
-    return;
-  }
-  try {
-    const payload = {
-      ...selectedFile.value,
-      groupingId: moveToGroupId.value
-    };
-    await updateMarkdown(payload);
-    ElMessage.success('笔记移动成功');
-    showMoveNoteDialog.value = false;
-    selectedFile.value = null;
-    await fetchGroupings();
-    await fetchMarkdownFiles();
-  } catch (error) {
-    ElMessage.error('移动失败: ' + error.message);
-  }
-};
-
-const handleSearch = async () => {
-  if (!searchKeyword.value.trim()) {
-    groupMarkdownFiles.value = markdownFiles.value;
-    return;
-  }
-  try {
-    const response = await searchMarkdown(searchKeyword.value);
-    groupMarkdownFiles.value = response.data;
-  } catch (error) {
-    ElMessage.error('搜索失败: ' + error.message);
-  }
-};
-
-import jsPDF from 'jspdf';
-import html2canvas from 'html2canvas';
-
-
-const showExportLoading = ref(false);
-
-// 文件名特殊字符清理
-const sanitizeFilename = (name) => name.replace(/[<>:"/\\|?*]/g, '_').trim() || '未命名笔记';
-
-const handleExport = async (format) => {
-  if (!selectedFile.value || showExportLoading.value) return;
-
-  try {
-    await validateToken();
-  } catch (error) {
-    ElMessage.error('登录已过期，请重新登录');
-    userStore.logout();
-    router.push('/login');
-    return;
-  }
-
-  const title = sanitizeFilename(selectedFile.value.title);
-  const content = selectedFile.value.content;
-  const previewElement = document.querySelector('.markdown-preview');
-
-  if (!previewElement) {
-    ElMessage.error('无法找到预览区域');
-    return;
-  }
-
-  showExportLoading.value = true;
-  ElMessage.info(`正在导出为 ${format.toUpperCase()}...`);
-
-  try {
-    switch (format) {
-      case 'md':
-        exportAsMd(title, content);
-        break;
-      case 'pdf':
-        await exportAsPdf(title, previewElement);
-        break;
-      case 'html':
-        exportAsHtml(title, previewElement.innerHTML);
-        break;
-    }
-    ElMessage.success(`${format.toUpperCase()} 导出成功`);
-  } catch (error) {
-    console.error('Export failed:', error);
-    ElMessage.error(`导出失败: ${error.message}`);
-  } finally {
-    showExportLoading.value = false;
-  }
-};
-
-const exportAsMd = (title, content) => {
-  const blob = new Blob([content], { type: 'text/markdown;charset=utf-8' });
-  downloadBlob(blob, `${title}.md`);
-};
-
-const exportAsPdf = async (title, element) => {
-  const canvas = await html2canvas(element, {
-    scale: 2,
-    useCORS: true,
-    logging: false,
-  });
-
-  const pdf = new jsPDF({
-    orientation: 'p',
-    unit: 'mm',
-    format: 'a4',
-  });
-
-  const pageHeight = pdf.internal.pageSize.getHeight() - 20; // 减去页边距
-  const pageWidth = pdf.internal.pageSize.getWidth() - 20;
-  const imgWidth = pageWidth;
-  const imgHeight = (canvas.height * imgWidth) / canvas.width;
-  let heightLeft = imgHeight;
-  let position = 10; // 初始Y轴位置
-  const imgData = canvas.toDataURL('image/png');
-
-  pdf.addImage(imgData, 'PNG', 10, position, imgWidth, imgHeight);
-  heightLeft -= pageHeight;
-
-  let pageCount = 1;
-  while (heightLeft > 0) {
-    pageCount++;
-    position = -pageHeight * (pageCount - 1) + 10;
-    pdf.addPage();
-    pdf.addImage(imgData, 'PNG', 10, position, imgWidth, imgHeight);
-    heightLeft -= pageHeight;
-  }
-  
-  // 添加页眉和页脚
-  for (let i = 1; i <= pageCount; i++) {
-    pdf.setPage(i);
-    pdf.setFontSize(8);
-    pdf.setTextColor(150);
-    pdf.text(title, pdf.internal.pageSize.getWidth() / 2, 8, { align: 'center' });
-    pdf.text(`第 ${i} 页 / 共 ${pageCount} 页`, pdf.internal.pageSize.getWidth() / 2, pdf.internal.pageSize.getHeight() - 8, { align: 'center' });
-  }
-
-  pdf.save(`${title}.pdf`);
-};
-
-const exportAsHtml = (title, htmlContent) => {
-  const fullHtml = `
-    <!DOCTYPE html>
-    <html lang="zh-CN">
-    <head>
-      <meta charset="UTF-8">
-      <title>${title}</title>
-      <link rel="stylesheet" href="https://cdnjs.cloudflare.com/ajax/libs/github-markdown-css/5.1.0/github-markdown.min.css">
-      <style>
-        body { box-sizing: border-box; min-width: 200px; max-width: 980px; margin: 0 auto; padding: 45px; }
-        @media (max-width: 767px) { body { padding: 15px; } }
-      </style>
-    </head>
-    <body class="markdown-body">
-      <h1>${title}</h1>
-      ${htmlContent}
-    </body>
-    </html>
-  `;
-  const blob = new Blob([fullHtml], { type: 'text/html;charset=utf-8' });
-  downloadBlob(blob, `${title}.html`);
-};
-
-const downloadBlob = (blob, filename) => {
-  const url = URL.createObjectURL(blob);
-  const link = document.createElement('a');
-  link.href = url;
-  link.download = filename;
-  document.body.appendChild(link);
-  link.click();
-  document.body.removeChild(link);
-  URL.revokeObjectURL(url);
-}
-
-const goToLogin = () => {
-  router.push('/login');
-};
-
-const goToRegister = () => {
-  router.push('/register');
-};
-
-const handleLogout = () => {
-  userStore.logout();
-  ElMessage.success('已退出登录');
-  router.push('/login');
-};
-
-const goToTrash = () => {
-  router.push({ name: 'Trash' });
-};
-
-const resetToHomeView = async () => {
-  selectedFile.value = null;
-  showEditor.value = false;
-  searchKeyword.value = '';
-  try {
-    groupMarkdownFiles.value = await getRecentFiles() || [];
-  } catch (error) {
-    ElMessage.error('获取最近文件失败: ' + error.message);
-    groupMarkdownFiles.value = [];
-  }
-};
-
-
-watch(activeMenu, (newVal) => {
-  if (newVal === 'all') {
-    resetToHomeView();
-  }
-});
-
-watch([selectedFile, showEditor], ([newFile, newShowEditor]) => {
-  if (newFile && !newShowEditor) {
-    nextTick(() => {
-      const previewElement = document.querySelector('.markdown-preview');
-      if (previewElement) {
-        // 如果是私密笔记且用户未登录，显示提示内容
-        if (newFile.isPrivate === 1 && !userStore.isLoggedIn) {
-          // 渲染私密笔记提示内容
-          Vditor.preview(previewElement, privateNoteContent, {
-            mode: 'light',
-            hljs: {
-              enable: true,
-              style: 'github'
-            }
-          });
-        } else if (newFile.content) {
-          // 只有在有内容时才渲染 Markdown
-          Vditor.preview(previewElement, newFile.content, {
-            mode: 'light',
-            hljs: {
-              enable: true,
-              style: 'github'
-            }
-          });
-        }
-      }
-    });
-  }
-}, { deep: true });
-
-const handleToggleRegistration = async (value) => {
-  try {
-    await toggleRegistration(value);
-    ElMessage.success(`注册功能已${value ? '开启' : '关闭'}`);
-  } catch (error) {
-    ElMessage.error('操作失败');
-    isRegistrationEnabled.value = !value; // revert
-  }
-};
-
-const handleGenerateCode = async () => {
-  try {
-    const code = await generateRegistrationCode();
-    generatedCode.value = code;
-    ElMessage.success('注册码生成成功');
-  } catch (error) {
-    ElMessage.error('生成注册码失败: ' + error.message);
-  }
-};
-
-const copyToClipboard = (text) => {
-  navigator.clipboard.writeText(text).then(() => {
-    ElMessage.success('已复制到剪贴板');
-  }, () => {
-    ElMessage.error('复制失败');
-  });
-};
-
-onMounted(async () => {
-  await fetchGroupings();
-  await resetToHomeView();
-  try {
-    isRegistrationEnabled.value = await getRegistrationStatus();
-  } catch (error) {
-    console.error("Failed to fetch registration status:", error);
-  }
-});
-const handleUpdatePassword = async () => {
-  if (!updatePasswordFormRef.value) return;
-  await updatePasswordFormRef.value.validate(async (valid) => {
-    if (valid) {
-      try {
-        await updatePassword({
-          oldPassword: updatePasswordForm.value.oldPassword,
-          newPassword: updatePasswordForm.value.newPassword
-        });
-        ElMessage.success('密码修改成功，请重新登录');
-        showUpdatePasswordDialog.value = false;
-        await handleLogout();
-      } catch (error) {
-        ElMessage.error('密码修改失败: ' + error.message);
-      }
-    }
-  });
-};
-
-const resetUpdatePasswordForm = () => {
-  updatePasswordForm.value = { oldPassword: '', newPassword: '', confirmPassword: '' };
-  if (updatePasswordFormRef.value) {
-    updatePasswordFormRef.value.resetFields();
-  }
-};
-
-</script>
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-<style>
-/* 全局 Element Plus 样式覆盖 */
-.el-dialog {
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-  box-shadow: var(--box-shadow-light);
-}
-
-.dark-theme .markdown-preview {
-  background-color: rgba(30, 30, 47, 0.8);
-}
-
-.vditor {
-  flex-grow: 1;
-  border: none;
-}
-
-.save-status {
-  font-size: 14px;
-  color: var(--text-color-secondary);
-}
-
-.upload-btn {
-  display: inline-block;
-  /* margin-left is no longer needed due to gap in parent */
-}
-</style>
-
-/* 对话框样式 */
-:deep(.el-dialog) {
-  border-radius: var(--border-radius);
-  background-color: var(--bg-color-secondary);
-}
-
-:deep(.el-dialog__header) {
-  border-bottom: 1px solid var(--border-color);
-  padding: 1.5rem;
-}
-
-:deep(.el-dialog__title) {
-  font-size: 1.25rem;
-  font-weight: 600;
-  color: var(--text-color);
-}
-
-:deep(.el-dialog__body) {
-  padding: 1.5rem;
-}
-
-:deep(.el-dialog__footer) {
-  padding: 1.5rem;
-  border-top: 1px solid var(--border-color);
-}
-
-.welcome-text {
-  white-space: nowrap;
-}
-.user-actions, .guest-actions {
-  display: flex;
-  align-items: center;
-  gap: 10px;
-}
+                <template #append
\ No newline at end of file