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new file mode 100644
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diff --git a/rag/LightRAG-deepseek/zhiji_webui/touxiang.png b/rag/LightRAG-deepseek/zhiji_webui/touxiang.png
new file mode 100644
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diff --git a/rag/LightRAG-deepseek/zhiji_webui/演示版.html b/rag/LightRAG-deepseek/zhiji_webui/演示版.html
index 3f99980..c58240f 100644
--- a/rag/LightRAG-deepseek/zhiji_webui/演示版.html
+++ b/rag/LightRAG-deepseek/zhiji_webui/演示版.html
@@ -411,7 +411,7 @@
       <!-- 用户信息区域 -->
       <div class="p-4 border-t border-gray-700 flex items-center justify-between">
         <div class="flex items-center gap-3">
-          <img src=".\tubiao.png" alt="用户头像" class="w-8 h-8 rounded-full"> <!-- 替换绝对路径 -->
+          <img src=".\touxiang.png" alt="用户头像" class="w-8 h-8 rounded-full"> <!-- 替换绝对路径 -->
           <div>
             <div class="text-sm font-medium" id="user-name">昵称</div>
             <div class="text-xs text-text-muted" id="user-grade-major">年级 | 专业</div>
@@ -432,23 +432,6 @@
   <div class="bg-white p-4 border-b border-gray-200 flex items-center justify-between">
     <h1 class="text-xl font-semibold">笔记管理</h1>
     <div class="flex items-center gap-3">
-      <div class="relative mr-3">
-        <select id="categoryFilter" class="input-field pl-3 pr-8 w-48 border border-gray-300 rounded-md py-2 focus:outline-none focus:ring-2 focus:ring-primary/50 appearance-none bg-white">
-          <!-- 选项将通过JS动态生成 -->
-        </select>
-        <i class="fa fa-chevron-down absolute right-3 top-1/2 -translate-y-1/2 text-gray-400 pointer-events-none"></i>
-      </div>
-      <div class="relative">
-        <input 
-          type="text" 
-          id="noteSearch"  
-          placeholder="搜索笔记..." 
-          class="input-field pl-9 w-64 border border-gray-300 rounded-md py-2 px-3 focus:outline-none focus:ring-2 focus:ring-primary/50"
-        >
-      </div>
-      <button class="btn-action btn-primary bg-blue-600 text-white px-4 py-2 rounded-md hover:bg-blue-700 transition-colors" id="newNoteBtn">
-        <i class="fa fa-plus mr-1"></i> 新建笔记
-      </button>
       <button class="btn-action btn-secondary border border-gray-300 px-4 py-2 rounded-md hover:bg-gray-100 transition-colors" id="importNoteBtn">
         <i class="fa fa-upload mr-1"></i> 导入
       </button>
@@ -459,17 +442,9 @@
   <div class="p-6 border-b border-gray-200 bg-white">
     <h2 class="text-lg font-semibold mb-4">已上传文件</h2>
     <div id="documents-container" class="border rounded-lg p-4 bg-gray-50">
-      <!-- 文件列表将通过JS动态生成 -->
     </div>
   </div>
 
-  <!-- 笔记列表区域（删除了"我的笔记"标题） -->
-  <div class="p-6 flex-1">
-    <!-- 删除了原来的 <h2 class="text-lg font-semibold mb-4">我的笔记</h2> -->
-    <div class="grid grid-cols-1 md:grid-cols-2 lg:grid-cols-3 gap-6" id="notes-container">
-      <!-- 笔记卡片将通过JS动态生成 -->
-    </div>
-  </div>
 </div>
 
 
@@ -484,7 +459,7 @@
           <!-- 系统消息示例 -->
           <div class="max-w-[80%]">
             <div class="flex items-center gap-2 mb-1">
-              <img src=".\tubiao.png" alt="AI" class="w-6 h-6 rounded-full">
+              <img src=".\touxiang.png" alt="AI" class="w-6 h-6 rounded-full">
               <span class="text-sm font-medium text-gray-700">知记助手--KnowNo</span>
             </div>
             <div class="bg-gray-100 p-3 rounded-lg rounded-tl-none">
@@ -613,224 +588,6 @@
         </div>
     </div>
 
-    <!-- 新建/编辑笔记模态框 -->
-<div id="newNoteModal" class="fixed inset-0 bg-black/50 flex items-center justify-center p-4 z-50 hidden transition-opacity duration-300">
-    <div class="w-full max-w-2xl bg-white rounded-xl p-8 shadow-lg transform transition-transform duration-300 scale-95">
-        <div class="flex justify-between items-center mb-6">
-            <h2 class="text-xl font-semibold text-dark" id="noteModalTitle">新建笔记</h2>
-            <button id="closeNewNoteModal" class="text-gray-400 hover:text-gray-600">
-                <i class="fa fa-times text-xl"></i>
-            </button>
-        </div>
-        
-        <form id="newNoteForm" class="space-y-5">
-            <input type="hidden" id="noteId"> <!-- 用于编辑模式存储笔记ID -->
-            
-            <!-- 笔记标题 -->
-            <div>
-                <label for="noteTitle" class="block text-sm font-medium text-gray-700 mb-1">笔记标题</label>
-                <input 
-                    type="text" 
-                    id="noteTitle" 
-                    class="login-input" 
-                    placeholder="请输入笔记标题" 
-                    required
-                >
-                <p id="noteTitleError" class="text-red-500 text-xs mt-1 hidden">请输入笔记标题</p>
-            </div>
-            
-            <!-- 笔记分类（修正后） -->
-<div>
-    <label for="noteCategory" class="block text-sm font-medium text-gray-700 mb-1">笔记分类</label>
-    <input 
-        type="text" 
-        id="noteCategory" 
-        class="login-input" 
-        placeholder="请输入笔记分类（例如：高等数学、计算机网络）"
-    >
-    <p id="noteCategoryError" class="text-red-500 text-xs mt-1 hidden">请输入笔记分类</p>
-</div>
-
-  
-                
-                <!-- 笔记内容（富文本编辑器） -->
-                <div>
-                    <label for="noteContent" class="block text-sm font-medium text-gray-700 mb-1">笔记内容</label>
-                    <div class="border border-gray-200 rounded-md mb-2 overflow-hidden">
-                        <!-- 富文本工具栏 -->
-                        <div class="flex items-center gap-1 p-2 border-b border-gray-200 bg-gray-50 flex-wrap">
-                            <button type="button" class="toolbar-btn" data-command="bold" title="加粗 (Ctrl+B)">
-                                <i class="fa fa-bold"></i>
-                            </button>
-                            <button type="button" class="toolbar-btn" data-command="italic" title="斜体 (Ctrl+I)">
-                                <i class="fa fa-italic"></i>
-                            </button>
-                            <button type="button" class="toolbar-btn" data-command="underline" title="下划线 (Ctrl+U)">
-                                <i class="fa fa-underline"></i>
-                            </button>
-                            <span class="h-4 w-px bg-gray-300 mx-1"></span>
-                            <button type="button" class="toolbar-btn" data-command="insertUnorderedList" title="无序列表">
-                                <i class="fa fa-list-ul"></i>
-                            </button>
-                            <button type="button" class="toolbar-btn" data-command="insertOrderedList" title="有序列表">
-                                <i class="fa fa-list-ol"></i>
-                            </button>
-                            <button type="button" class="toolbar-btn" data-command="outdent" title="减少缩进">
-                                <i class="fa fa-outdent"></i>
-                            </button>
-                            <button type="button" class="toolbar-btn" data-command="indent" title="增加缩进">
-                                <i class="fa fa-indent"></i>
-                            </button>
-                            <span class="h-4 w-px bg-gray-300 mx-1"></span>
-                            <button type="button" class="toolbar-btn" data-command="justifyLeft" title="左对齐">
-                                <i class="fa fa-align-left"></i>
-                            </button>
-                            <button type="button" class="toolbar-btn" data-command="justifyCenter" title="居中对齐">
-                                <i class="fa fa-align-center"></i>
-                            </button>
-                            <button type="button" class="toolbar-btn" data-command="justifyRight" title="右对齐">
-                                <i class="fa fa-align-right"></i>
-                            </button>
-                            <span class="h-4 w-px bg-gray-300 mx-1"></span>
-                            <button type="button" class="toolbar-btn" id="insertImageBtn" title="插入图片">
-                                <i class="fa fa-image"></i>
-                            </button>
-                            <button type="button" class="toolbar-btn" title="插入公式">
-                                <i class="fa fa-superscript"></i>
-                            </button>
-                            <button type="button" class="toolbar-btn" data-command="createLink" title="插入链接">
-                                <i class="fa fa-link"></i>
-                            </button>
-                            <button type="button" class="toolbar-btn" data-command="unlink" title="移除链接">
-                                <i class="fa fa-unlink"></i>
-                            </button>
-                        </div>
-                        
-                        <!-- 富文本编辑区域 -->
-                        <div 
-                            id="noteContent" 
-                            class="note-editor min-h-[300px]" 
-                            contenteditable="true"
-                            placeholder="请输入笔记内容..."
-                        ></div>
-                    </div>
-                    <p id="noteContentError" class="text-red-500 text-xs mt-1 hidden">请输入笔记内容</p>
-                </div>
-                
-                <!-- 笔记封面 -->
-                <div>
-                    <label class="block text-sm font-medium text-gray-700 mb-1">笔记封面</label>
-                    <div class="flex items-center gap-3">
-                        <div class="w-20 h-20 bg-gray-100 rounded-md flex items-center justify-center border border-dashed border-gray-300">
-                            <img id="noteCoverPreview" src="" alt="封面预览" class="w-full h-full object-cover hidden">
-                            <i class="fa fa-picture-o text-gray-400" id="coverPlaceholder"></i>
-                        </div>
-                        <div>
-                            <label for="noteCover" class="btn-action btn-secondary cursor-pointer inline-flex items-center">
-                                <i class="fa fa-upload mr-1"></i> 选择图片
-                            </label>
-                            <input type="file" id="noteCover" accept="image/*" class="hidden">
-                            <p class="text-xs text-gray-500 mt-1">支持JPG、PNG格式，建议尺寸400×200</p>
-                        </div>
-                    </div>
-                </div>
-                
-                <!-- 提交按钮 -->
-                <div class="flex gap-3 pt-2">
-                    <button type="button" id="cancelNewNote" class="flex-1 btn-action btn-secondary">
-                        取消
-                    </button>
-                    <button type="submit" class="flex-1 login-btn">
-                        <span id="noteSubmitBtnText">保存笔记</span>
-                        <i class="fa fa-check"></i>
-                    </button>
-                </div>
-            </form>
-        </div>
-    </div>
-
-    <!-- 插入图片模态框 -->
-    <div id="insertImageModal" class="fixed inset-0 bg-black/50 flex items-center justify-center p-4 z-50 hidden transition-opacity duration-300">
-        <div class="w-full max-w-md bg-white rounded-xl p-6 shadow-lg transform transition-transform duration-300 scale-95">
-            <div class="flex justify-between items-center mb-4">
-                <h2 class="text-xl font-semibold text-dark">插入图片</h2>
-                <button id="closeInsertImageModal" class="text-gray-400 hover:text-gray-600">
-                    <i class="fa fa-times text-xl"></i>
-                </button>
-            </div>
-            
-            <div class="space-y-5">
-                <!-- 上传选项卡 -->
-                <div class="border-b border-gray-200">
-                    <div class="flex">
-                        <button class="px-4 py-2 text-sm font-medium text-primary border-b-2 border-primary" id="uploadTabBtn">
-                            本地上传
-                        </button>
-                        <button class="px-4 py-2 text-sm font-medium text-gray-500 hover:text-gray-700" id="urlTabBtn">
-                            图片链接
-                        </button>
-                    </div>
-                </div>
-                          <!-- 其他表单内容（如笔记内容、封面上传等） -->
-            <!-- ... -->
-        </form>
-    </div>
-</div>
-                <!-- 本地上传区域 -->
-                <div id="uploadTab" class="space-y-4">
-                    <div class="file-drop-area" id="imageDropArea">
-                        <input type="file" id="imageUpload" accept="image/*" class="hidden">
-                        <i class="fa fa-cloud-upload text-2xl text-gray-400 mb-2"></i>
-                        <p class="text-sm text-gray-600 mb-1">点击或拖拽图片到此处</p>
-                        <p class="text-xs text-gray-500">支持JPG、PNG格式，最大5MB</p>
-                    </div>
-                    
-                    <!-- 预览区域 -->
-                    <div id="imagePreviewContainer" class="hidden">
-                        <p class="text-sm font-medium text-gray-700 mb-2">预览：</p>
-                        <div class="relative">
-                            <img id="imagePreview" src="" alt="图片预览" class="max-w-full max-h-60 rounded-md border border-gray-200">
-                            <button id="removeImage" class="absolute top-2 right-2 w-6 h-6 bg-black/50 text-white rounded-full flex items-center justify-center hover:bg-black/70 transition-colors">
-                                <i class="fa fa-times text-xs"></i>
-                            </button>
-                        </div>
-                    </div>
-                </div>
-                
-                <!-- 图片链接区域 -->
-                <div id="urlTab" class="hidden space-y-4">
-                    <div>
-                        <label for="imageUrl" class="block text-sm font-medium text-gray-700 mb-1">图片URL</label>
-                        <input 
-                            type="url" 
-                            id="imageUrl" 
-                            class="login-input" 
-                            placeholder="https://example.com/image.jpg"
-                        >
-                        <p class="text-xs text-gray-500 mt-1">请输入有效的图片链接</p>
-                    </div>
-                    
-                    <div class="bg-gray-50 p-3 rounded-md">
-                        <label class="flex items-center gap-2 text-sm">
-                            <input type="checkbox" id="imageResponsive" checked>
-                            <span>自适应宽度</span>
-                        </label>
-                    </div>
-                </div>
-                
-                <!-- 按钮 -->
-                <div class="flex gap-3 pt-2">
-                    <button type="button" id="cancelInsertImage" class="flex-1 bg-gray-200 text-dark py-2 rounded-md font-medium hover:bg-gray-300 transition-colors">
-                        取消
-                    </button>
-                    <button type="button" id="confirmInsertImage" class="flex-1 bg-primary text-white py-2 rounded-md font-medium hover:bg-primary/90 transition-colors flex items-center justify-center gap-2">
-                        <span>插入图片</span>
-                        <i class="fa fa-arrow-right"></i>
-                    </button>
-                </div>
-            </div>
-        </div>
-    </div>
 
     <!-- 导入笔记模态框 -->
     <div id="importNoteModal" class="fixed inset-0 bg-black/50 flex items-center justify-center p-4 z-50 hidden transition-opacity duration-300">
@@ -962,44 +719,6 @@
     const userName = document.getElementById('user-name');
     const userGradeMajor = document.getElementById('user-grade-major');
 
-    // 笔记相关元素
-    const categoryFilter = document.getElementById('categoryFilter');
-    const newNoteBtn = document.getElementById('newNoteBtn');
-    const importNoteBtn = document.getElementById('importNoteBtn');
-    const newNoteModal = document.getElementById('newNoteModal');
-    const closeNewNoteModal = document.getElementById('closeNewNoteModal');
-    const cancelNewNote = document.getElementById('cancelNewNote');
-    const newNoteForm = document.getElementById('newNoteForm');
-    const noteModalTitle = document.getElementById('noteModalTitle');
-    const noteId = document.getElementById('noteId');
-    const noteTitle = document.getElementById('noteTitle');
-    const noteCategory = document.getElementById('noteCategory');
-    const noteContent = document.getElementById('noteContent');
-    const noteCover = document.getElementById('noteCover');
-    const noteCoverPreview = document.getElementById('noteCoverPreview');
-    const coverPlaceholder = document.getElementById('coverPlaceholder');
-    const noteSubmitBtnText = document.getElementById('noteSubmitBtnText');
-    const notesContainer = document.getElementById('notes-container');
-let currentSelectedCategory = 'all';
-
-    // 富文本编辑器元素
-    const toolbarButtons = document.querySelectorAll('.toolbar-btn[data-command]');
-    const insertImageBtn = document.getElementById('insertImageBtn');
-    const insertImageModal = document.getElementById('insertImageModal');
-    const closeInsertImageModal = document.getElementById('closeInsertImageModal');
-    const cancelInsertImage = document.getElementById('cancelInsertImage');
-    const confirmInsertImage = document.getElementById('confirmInsertImage');
-    const uploadTabBtn = document.getElementById('uploadTabBtn');
-    const urlTabBtn = document.getElementById('urlTabBtn');
-    const uploadTab = document.getElementById('uploadTab');
-    const urlTab = document.getElementById('urlTab');
-    const imageDropArea = document.getElementById('imageDropArea');
-    const imageUpload = document.getElementById('imageUpload');
-    const imagePreviewContainer = document.getElementById('imagePreviewContainer');
-    const imagePreview = document.getElementById('imagePreview');
-    const removeImage = document.getElementById('removeImage');
-    const imageUrl = document.getElementById('imageUrl');
-    const imageResponsive = document.getElementById('imageResponsive');
 
     // 导入相关元素
     const importNoteModal = document.getElementById('importNoteModal');
@@ -1261,491 +980,8 @@ document.querySelectorAll('.sidebar-item[data-view]').forEach(item => {
     });
 });
 
-// 搜索笔记 + 分类筛选 联合功能
-const noteSearchInput = document.getElementById('noteSearch');
-
-// 搜索框输入事件
-if (noteSearchInput) {
-    noteSearchInput.addEventListener('input', function () {
-        const searchTerm = this.value.trim().toLowerCase();
-        // 调用联合筛选函数（分类+关键词）
-        filterNotesByCategoryAndSearch(searchTerm);
-    });
-}
-
-// 分类筛选下拉框切换事件（新增）
-if (categoryFilter) {
-    categoryFilter.addEventListener('change', function () {
-        currentSelectedCategory = this.value; // 更新当前选中分类
-        const searchTerm = noteSearchInput.value.trim().toLowerCase();
-        // 调用联合筛选函数（分类+关键词）
-        filterNotesByCategoryAndSearch(searchTerm);
-    });
-}
 
-// 新增：联合筛选函数（同时处理分类和搜索关键词）
-function filterNotesByCategoryAndSearch(searchTerm) {
-    let filteredNotes = notesData;
-    
-    // 第一步：按分类筛选（非“全部分类”时过滤）
-    if (currentSelectedCategory !== 'all') {
-        filteredNotes = filteredNotes.filter(note => note.category === currentSelectedCategory);
-    }
-    
-    // 第二步：按关键词筛选（搜索框有内容时过滤）
-    if (searchTerm !== '') {
-        filteredNotes = filteredNotes.filter(note => {
-            const titleMatch = note.title.toLowerCase().includes(searchTerm);
-            const contentMatch = stripHtml(note.content).toLowerCase().includes(searchTerm);
-            return titleMatch || contentMatch;
-        });
-    }
-    
-    // 渲染筛选后的笔记列表
-    renderNotes(filteredNotes);
-}
 
-// 富文本编辑器功能实现
-// 文本格式化按钮
-toolbarButtons.forEach(button => {
-    button.addEventListener('click', () => {
-        const command = button.getAttribute('data-command');
-        
-        // 特殊处理链接插入
-        if (command === 'createLink') {
-            const url = prompt('请输入链接地址:');
-            if (url) {
-                document.execCommand(command, false, url);
-            }
-            return;
-        }
-        
-        // 执行命令
-        document.execCommand(command, false, null);
-        
-        // 聚焦回编辑区域
-        noteContent.focus();
-        
-        // 更新按钮状态（如粗体按钮是否激活）
-        updateToolbarState();
-    });
-});
-
-// 更新工具栏按钮状态
-function updateToolbarState() {
-    toolbarButtons.forEach(button => {
-        const command = button.getAttribute('data-command');
-        if (document.queryCommandState(command)) {
-            button.classList.add('active');
-        } else {
-            button.classList.remove('active');
-        }
-    });
-}
-
-// 监听编辑区域选择变化，更新工具栏状态
-noteContent.addEventListener('mouseup', updateToolbarState);
-noteContent.addEventListener('keyup', updateToolbarState);
-
-// 插入图片模态框控制
-insertImageBtn.addEventListener('click', () => {
-    insertImageModal.classList.remove('hidden');
-    setTimeout(() => {
-        insertImageModal.querySelector('div').classList.add('scale-100');
-        insertImageModal.querySelector('div').classList.remove('scale-95');
-    }, 10);
-    resetInsertImageForm();
-});
-
-closeInsertImageModal.addEventListener('click', () => {
-    closeInsertImageModalHandler();
-});
-
-cancelInsertImage.addEventListener('click', () => {
-    closeInsertImageModalHandler();
-});
-
-function closeInsertImageModalHandler() {
-    insertImageModal.querySelector('div').classList.add('scale-95');
-    insertImageModal.querySelector('div').classList.remove('scale-100');
-    setTimeout(() => {
-        insertImageModal.classList.add('hidden');
-    }, 300);
-}
-
-// 重置插入图片表单
-function resetInsertImageForm() {
-    imageUpload.value = '';
-    imagePreviewContainer.classList.add('hidden');
-    imagePreview.src = '';
-    imageUrl.value = '';
-    imageResponsive.checked = true;
-    showTab('upload');
-}
-
-// 切换上传/URL选项卡
-uploadTabBtn.addEventListener('click', () => {
-    showTab('upload');
-});
-
-urlTabBtn.addEventListener('click', () => {
-    showTab('url');
-});
-
-function showTab(tabName) {
-    if (tabName === 'upload') {
-        uploadTab.classList.remove('hidden');
-        urlTab.classList.add('hidden');
-        uploadTabBtn.classList.add('text-primary', 'border-b-2', 'border-primary');
-        uploadTabBtn.classList.remove('text-gray-500');
-        urlTabBtn.classList.remove('text-primary', 'border-b-2', 'border-primary');
-        urlTabBtn.classList.add('text-gray-500');
-    } else {
-        uploadTab.classList.add('hidden');
-        urlTab.classList.remove('hidden');
-        uploadTabBtn.classList.remove('text-primary', 'border-b-2', 'border-primary');
-        uploadTabBtn.classList.add('text-gray-500');
-        urlTabBtn.classList.add('text-primary', 'border-b-2', 'border-primary');
-        urlTabBtn.classList.remove('text-gray-500');
-    }
-}
-
-// 图片上传处理
-imageDropArea.addEventListener('click', () => {
-    imageUpload.click();
-});
-
-imageUpload.addEventListener('change', (e) => {
-    const file = e.target.files[0];
-    if (file) {
-        handleImageUpload(file);
-    }
-});
-
-// 拖拽图片处理
-imageDropArea.addEventListener('dragover', (e) => {
-    e.preventDefault();
-    imageDropArea.classList.add('border-primary', 'bg-primary/5');
-});
-
-imageDropArea.addEventListener('dragleave', () => {
-    imageDropArea.classList.remove('border-primary', 'bg-primary/5');
-});
-
-imageDropArea.addEventListener('drop', (e) => {
-    e.preventDefault();
-    imageDropArea.classList.remove('border-primary', 'bg-primary/5');
-    
-    const file = e.dataTransfer.files[0];
-    if (file) {
-        handleImageUpload(file);
-    }
-});
-
-// 处理图片上传
-function handleImageUpload(file) {
-    // 检查文件类型
-    if (!file.type.startsWith('image/')) {
-        alert('请选择图片文件（JPG、PNG格式）');
-        return;
-    }
-    
-    // 检查文件大小
-    if (file.size > 5 * 1024 * 1024) {
-        alert('图片大小不能超过5MB');
-        return;
-    }
-    
-    // 预览图片
-    const reader = new FileReader();
-    reader.onload = (event) => {
-        imagePreview.src = event.target.result;
-        imagePreviewContainer.classList.remove('hidden');
-    };
-    reader.readAsDataURL(file);
-}
-
-// 移除已选择的图片
-removeImage.addEventListener('click', () => {
-    imageUpload.value = '';
-    imagePreviewContainer.classList.add('hidden');
-    imagePreview.src = '';
-});
-
-// 确认插入图片
-confirmInsertImage.addEventListener('click', () => {
-    let imageSrc = '';
-    
-    // 检查是上传还是URL
-    if (!uploadTab.classList.contains('hidden')) {
-        // 上传方式
-        if (!imagePreview.src) {
-            alert('请先选择图片');
-            return;
-        }
-        imageSrc = imagePreview.src;
-    } else {
-        // URL方式
-        if (!imageUrl.value.trim()) {
-            alert('请输入图片URL');
-            return;
-        }
-        imageSrc = imageUrl.value.trim();
-    }
-    
-    // 在编辑器中插入图片
-    const isResponsive = imageResponsive.checked;
-    const img = document.createElement('img');
-    img.src = imageSrc;
-    img.alt = '插入的图片';
-    if (isResponsive) {
-        img.style.maxWidth = '100%';
-        img.style.height = 'auto';
-    }
-    
-    // 获取选择对象
-    const selection = window.getSelection();
-    if (selection.rangeCount > 0) {
-        const range = selection.getRangeAt(0);
-        range.deleteContents();
-        range.insertNode(img);
-        
-        // 在图片后添加一个空格，方便继续输入
-        range.setStartAfter(img);
-        range.setEndAfter(img);
-        range.insertNode(document.createTextNode(' '));
-        selection.removeAllRanges();
-        selection.addRange(range);
-    } else {
-        // 如果没有选择范围，直接添加到末尾
-        noteContent.appendChild(img);
-        noteContent.appendChild(document.createTextNode(' '));
-    }
-    
-    // 关闭模态框
-    closeInsertImageModalHandler();
-    
-    // 聚焦回编辑区域
-    noteContent.focus();
-});
-
-// 新建笔记模态框控制
-newNoteBtn.addEventListener('click', () => {
-    // 切换到新建模式
-    noteModalTitle.textContent = '新建笔记';
-    noteSubmitBtnText.textContent = '保存笔记';
-    noteId.value = '';
-    
-    newNoteModal.classList.remove('hidden');
-    setTimeout(() => {
-        newNoteModal.querySelector('div').classList.add('scale-100');
-        newNoteModal.querySelector('div').classList.remove('scale-95');
-    }, 10);
-    resetNewNoteForm();
-});
-
-closeNewNoteModal.addEventListener('click', () => {
-    closeNewNoteModalHandler();
-});
-
-cancelNewNote.addEventListener('click', () => {
-    closeNewNoteModalHandler();
-});
-
-function closeNewNoteModalHandler() {
-    newNoteModal.querySelector('div').classList.add('scale-95');
-    newNoteModal.querySelector('div').classList.remove('scale-100');
-    setTimeout(() => {
-        newNoteModal.classList.add('hidden');
-    }, 300);
-}
-
-// 重置新建笔记表单
-function resetNewNoteForm() {
-    newNoteForm.reset();
-    noteTitleError.classList.add('hidden');
-    noteCategoryError.classList.add('hidden');
-    noteContentError.classList.add('hidden');
-    noteContent.innerHTML = '';
-    noteCoverPreview.classList.add('hidden');
-    coverPlaceholder.classList.remove('hidden');
-    noteCover.value = '';
-}
-
-// 笔记封面预览
-noteCover.addEventListener('change', (e) => {
-    const file = e.target.files[0];
-    if (file) {
-        const reader = new FileReader();
-        reader.onload = (event) => {
-            noteCoverPreview.src = event.target.result;
-            noteCoverPreview.classList.remove('hidden');
-            coverPlaceholder.classList.add('hidden');
-        };
-        reader.readAsDataURL(file);
-    }
-});
-
-// 编辑笔记功能
-notesContainer.addEventListener('click', (e) => {
-    const editBtn = e.target.closest('.edit-note');
-    if (editBtn) {
-        const noteId = editBtn.getAttribute('data-id');
-        openEditNoteModal(noteId);
-    }
-});
-
-// 打开编辑笔记模态框
-function openEditNoteModal(id) {
-    const note = notesData.find(n => n.id == id);
-    if (!note) return;
-    
-    // 切换到编辑模式
-    noteModalTitle.textContent = '编辑笔记';
-    noteSubmitBtnText.textContent = '更新笔记';
-    noteId.value = note.id;
-    
-    // 填充表单数据
-    noteTitle.value = note.title;
-    noteCategory.value = note.category;
-    noteContent.innerHTML = note.content;
-    
-    // 显示封面
-    if (note.cover) {
-        noteCoverPreview.src = note.cover;
-        noteCoverPreview.classList.remove('hidden');
-        coverPlaceholder.classList.add('hidden');
-    } else {
-        noteCoverPreview.classList.add('hidden');
-        coverPlaceholder.classList.remove('hidden');
-    }
-    
-    // 显示模态框
-    newNoteModal.classList.remove('hidden');
-    setTimeout(() => {
-        newNoteModal.querySelector('div').classList.add('scale-100');
-        newNoteModal.querySelector('div').classList.remove('scale-95');
-    }, 10);
-}
-
-// 删除笔记功能
-notesContainer.addEventListener('click', (e) => {
-const deleteBtn = e.target.closest('.delete-note');
-if (deleteBtn) {
-    const noteId = deleteBtn.getAttribute('data-id');
-    const note = notesData.find(n => n.id == noteId);
-    
-    if (confirm(`确定要删除“${note.title}”吗？`)) {
-        // 从内存中移除笔记
-        notesData = notesData.filter(n => n.id != noteId);
-        // 同步保存到 LocalStorage
-        localStorage.setItem('notesData', JSON.stringify(notesData));
-        // 重新渲染笔记列表
-        const searchTerm = noteSearchInput.value.trim().toLowerCase();
-filterNotesByCategoryAndSearch(searchTerm);
-    }
-}
-});
-
-// 新建/编辑笔记表单提交
-if (newNoteForm) { // 确保表单元素存在
-    newNoteForm.addEventListener('submit', (e) => {
-        e.preventDefault();
-        let isValid = true;
-
-        // 验证表单（先检查元素是否存在，避免报错）
-        if (noteTitle && noteTitleError) {
-            if (!noteTitle.value.trim()) {
-                noteTitleError.classList.remove('hidden');
-                isValid = false;
-            } else {
-                noteTitleError.classList.add('hidden');
-            }
-        }
-
-        // 分类验证（假设分类输入框id为"noteCategory"，错误提示id为"noteCategoryError"）
-        if (noteCategory && noteCategoryError) {
-            // 允许分类为空时，可改为：if (noteCategory.value.trim() === '')
-// 验证笔记分类
-if (!noteCategory.value) {
-    noteCategoryError.classList.remove('hidden');
-    isValid = false;
-} else {
-    noteCategoryError.classList.add('hidden');
-}
-        }
-
-        // 内容验证
-        if (noteContent && noteContentError) {
-            if (!noteContent.innerHTML.trim()) {
-                noteContentError.classList.remove('hidden');
-                isValid = false;
-            } else {
-                noteContentError.classList.add('hidden');
-            }
-        }
-
-        if (isValid) {
-            const isEditMode = !!noteId?.value; // 安全访问noteId
-            
-            // 确保notesData是数组（避免未初始化导致的错误）
-            if (!Array.isArray(notesData)) {
-                notesData = [];
-            }
-            
-            if (isEditMode) {
-                // 更新现有笔记
-                const index = notesData.findIndex(n => n.id == noteId.value);
-                if (index !== -1) {
-                    notesData[index] = {
-                        ...notesData[index],
-                        title: noteTitle.value.trim(),
-                        category: noteCategory?.value || '', // 安全访问分类值
-                        content: noteContent.innerHTML,
-                        date: new Date().toISOString().split('T')[0]
-                    };
-                    // 若上传新封面，更新封面
-                    if (noteCoverPreview && noteCoverPreview.src && !noteCoverPreview.classList.contains('hidden')) {
-                        notesData[index].cover = noteCoverPreview.src;
-                    }
-                }
-            } else {
-                // 生成新笔记ID（处理空数组情况）
-                const maxId = notesData.length > 0 
-                    ? Math.max(...notesData.map(n => Number(n.id) || 0)) 
-                    : 0;
-                const newNoteId = maxId + 1;
-
-                // 创建新笔记
-                const newNote = {
-                    id: newNoteId,
-                    title: noteTitle.value.trim(),
-                    category: noteCategory?.value || '', // 分类为空时用空字符串
-                    content: noteContent.innerHTML,
-                    cover: noteCoverPreview?.src || `https://picsum.photos/id/${30 + notesData.length}/400/200`,
-                    date: new Date().toISOString().split('T')[0],
-                    type: 'Text',
-                    views: 0
-                };
-                notesData.unshift(newNote); // 添加到数组开头（最新的在前面）
-            }
-
-            // 同步保存到LocalStorage
-            localStorage.setItem('notesData', JSON.stringify(notesData));
-            
-            // 刷新列表（确保搜索框元素存在）
-            const searchTerm = noteSearchInput?.value.trim().toLowerCase() || '';
-            filterNotesByCategoryAndSearch(searchTerm);
-            
-            // 关闭模态框 + 提示成功
-            closeNewNoteModalHandler();
-            alert(isEditMode ? '笔记更新成功！' : '笔记创建成功！');
-            
-            // 更新分类下拉框
-            renderDynamicCategoryFilter();
-        }
-    });
-}
 // 导入笔记模态框控制
 importNoteBtn.addEventListener('click', () => {
     importNoteModal.classList.remove('hidden');
@@ -2239,8 +1475,7 @@ function fetchNotesFromServer() {
         notesData = validNotes; 
         localStorage.setItem('notesData', JSON.stringify(notesData));
         renderNotes();
-                // 新增：获取数据后渲染分类下拉框
-        renderDynamicCategoryFilter();
+
     })
     .catch(err => {
         console.error('刷新失败：', err);
@@ -2432,19 +1667,7 @@ document.getElementById('documents-container').addEventListener('click', async f
 }
 
 
-// 填充笔记编辑区域并打开模态框
-function fillNoteWithContent(title, content, type) {
-    const noteTitle = document.getElementById('noteTitle');
-    const noteContent = document.getElementById('noteContent');
-    const noteType = document.getElementById('noteType'); // 假设笔记有“类型”字段（需在HTML中添加隐藏输入）
 
-    noteTitle.value = title;
-    noteContent.innerHTML = content;
-    if (noteType) noteType.value = type; // 可选：标记笔记类型
-
-    // 打开“新建笔记”模态框（模拟点击按钮）
-    document.getElementById('newNoteBtn').click();
-}
 
 // 单独渲染PDF文件（用PDF.js）
 function openPdfViewer(pdfUrl) {
@@ -2485,100 +1708,8 @@ function openPdfViewer(pdfUrl) {
     });
 }
 
-// 动态渲染分类下拉框（根据用户输入的分类自动生成选项）
-function renderDynamicCategoryFilter() {
-    const categoryFilter = document.getElementById('categoryFilter');
-    if (!categoryFilter) return;
-
-    // 清空现有选项
-    categoryFilter.innerHTML = '';
-
-    // 添加“全部分类”默认选项
-    const allOption = document.createElement('option');
-    allOption.value = 'all';
-    allOption.textContent = '全部分类';
-    categoryFilter.appendChild(allOption);
-
-    // 提取所有非空分类（去重）
-    const categories = new Set();
-    if (Array.isArray(notesData)) {
-        notesData.forEach(note => {
-            if (note.category && note.category.trim() !== '') {
-                categories.add(note.category.trim());
-            }
-        });
-    }
-
-    // 排序并生成选项
-    const sortedCategories = Array.from(categories).sort((a, b) => a.localeCompare(b));
-    sortedCategories.forEach(category => {
-        const option = document.createElement('option');
-        option.value = category;
-        option.textContent = category;
-        categoryFilter.appendChild(option);
-    });
 
-    // 保持当前选中分类
-    if (currentSelectedCategory && categoryFilter.querySelector(`option[value="${currentSelectedCategory}"]`)) {
-        categoryFilter.value = currentSelectedCategory;
-    }
-}
-// 渲染笔记列表（支持传入过滤后的笔记数据）
-function renderNotes(notesToRender = notesData) {
-    // 1. 确保能找到笔记容器元素
-    const notesContainer = document.getElementById('notes-container');
-    if (!notesContainer) {
-        console.error('页面中未找到笔记容器元素 #notes-container，请检查DOM结构');
-        return;
-    }
 
-    // 2. 处理「无数据」或「数据格式错误」的情况
-    if (!Array.isArray(notesToRender) || notesToRender.length === 0) {
-        notesContainer.innerHTML = `
-            <div class="text-center py-12 text-gray-500">
-                <i class="fa fa-book-open text-4xl mb-4"></i>
-            </div>
-        `;
-        return;
-    }
-    notesContainer.innerHTML = `
-        <div class="grid grid-cols-1 md:grid-cols-2 lg:grid-cols-3 gap-6">
-            ${notesToRender.map(note => `
-                <div class="bg-white rounded-lg overflow-hidden shadow-sm hover:shadow-md transition-shadow border border-gray-200">
-                    <div class="h-40 bg-gray-100 flex items-center justify-center">
-                        <img src="${note.cover}" alt="${note.title}预览" class="w-full h-full object-cover">
-                    </div>
-                    <div class="p-4">
-                        <div class="flex items-center justify-between mb-2">
-                            <span class="text-xs bg-blue-100 text-blue-800 px-2 py-0.5 rounded">${note.category}</span>
-                            <span class="text-xs text-gray-500">${note.date}</span>
-                        </div>
-                        <h3 class="font-medium mb-2 line-clamp-1">${note.title}</h3>
-                        <p class="text-sm text-gray-600 mb-3 line-clamp-2">${stripHtml(note.content.substring(0, 100))}...</p>
-                        <div class="flex items-center justify-between">
-                            <div class="flex items-center gap-2">
-                                <span class="text-xs text-gray-500 flex items-center">
-                                    <i class="fa fa-file-${note.type === 'PDF' ? 'pdf' : note.type === 'Word' ? 'word' : 'text'}-o mr-1"></i> ${note.type}
-                                </span>
-                                <span class="text-xs text-gray-500 flex items-center">
-                                    <i class="fa fa-eye mr-1"></i> ${note.views}
-                                </span>
-                            </div>
-                            <div class="flex items-center gap-3">
-                                <button class="text-gray-500 hover:text-primary edit-note" title="编辑" data-id="${note.id}">
-                                    <i class="fa fa-pencil text-lg"></i>
-                                </button>
-                                <button class="text-gray-500 hover:text-red-500 delete-note" title="删除" data-id="${note.id}">
-                                    <i class="fa fa-trash text-lg"></i>
-                                </button>
-                            </div>
-                        </div>
-                    </div>
-                </div>
-            `).join('')}
-        </div>
-    `;
-}
 
 // 辅助函数：去除HTML标签
 function stripHtml(html) {
@@ -2780,7 +1911,6 @@ document.addEventListener('DOMContentLoaded', () => {
     fetchAllDocuments();
     document.getElementById('notes-view').classList.remove('hidden');
     document.getElementById('qa-view').classList.add('hidden');
-    renderDynamicCategoryFilter();
     renderGraphCategoryFilter(); // 新增：初始化知识图谱分类选择框
     const searchTerm = noteSearchInput.value.trim().toLowerCase();
     filterNotesByCategoryAndSearch(searchTerm);