fix: 搜索输入实时响应修复

- 改用直接 setTimeout 方式，不用 debounce 函数
- 避免函数绑定问题导致搜索不触发

README.md

@@ -141,6 +141,50 @@ xian-favor/
 
 ## 版本历史
 
+- **v2.4.0** (2026-04-16): 数据库备份机制
+  - 自动备份：每天 04:00 执行
+  - 手动备份：页面一键操作
+  - 备份清理规则：保留30天 + 每月第一天永久保留
+  - 手动备份最多保留10个
+  - 支持恢复备份和删除备份
+  - 备份管理页面入口在侧边栏
+- **v2.3.2** (2026-04-16): 搜索功能修复
+  - 修复 debounce 函数定义顺序问题
+  - 搜索框输入后可正常过滤列表
+- **v2.3.1** (2026-04-16): 日期放到标题后面，不增加卡片高度
+  - 日期紧跟标题，同一行显示
+  - 格式紧凑：`04-16 11:09→04-16 12:00`
+- **v2.3.0** (2026-04-16): 卡片显示创建和更新日期
+  - 每个收藏卡片底部显示日期
+  - 格式：04-16 11:09（月-日 时:分）
+  - 有更新时显示：创建 → 更新
+  - 字体更小更淡，不影响卡片高度
+- **v2.2.0** (2026-04-16): 快捷添加按钮，一键选择类型
+  - 顶部按钮栏分离为4个快捷添加按钮（文本、链接、待办、专栏）
+  - 点击直接进入对应类型的添加弹窗
+  - 弹窗标题显示类型图标和名称
+  - 不再需要下拉选择类型，操作更快捷
+- **v2.1.0** (2026-04-16): 待办截止时间支持日期+时间
+  - 截止日期改为日期时间选择器
+  - 列表显示友好格式：今天 18:30、明天 09:00 等
+  - 详情页显示完整格式：2026年4月16日 18:30
+  - 后端支持多种日期格式解析
+  - 只有日期的待办视为当天 23:59 到期
+- **v2.0.1** (2026-04-16): 转换弹窗优化
+  - 内容预览保留换行格式，提高可读性
+  - 转换方式默认改为复制创建
+- **v2.0.0** (2026-04-16): 收藏转待办功能（大版本更新）
+  - 新增 `/api/items/<id>/convert` API
+  - **直接转换**：原收藏变为待办，数据合并
+  - **复制创建**：保留原收藏，新建待办任务
+  - 文本/链接/专栏类型可转换
+  - 内容自动合并到待办备注
+  - 前端列表和详情页添加转换按钮
+  - 弹窗配置：标题、状态、优先级、截止日期
+- v1.11.0 (2026-04-16): 已完成待办可重新打开
+  - 新增 `/api/items/<id>/reopen` 接口
+  - 前端列表已完成待办显示重新打开按钮（↻图标）
+  - 可恢复为 pending 或 in_progress 状态
 - v1.10.0 (2026-04-16): 网页端待办到期提醒功能
   - 新增提醒 API `/api/reminders`
   - 获取已过期、今天到期、即将到期的待办

scripts/auto_backup.py

@@ -0,0 +1,35 @@
+#!/usr/bin/env python3
+"""
+Xian Favor 自动备份脚本
+定时任务调用此脚本进行自动备份
+"""
+
+import sys
+import os
+
+# 添加项目路径
+sys.path.insert(0, os.path.dirname(os.path.dirname(os.path.abspath(__file__))))
+
+from xian_favor.db import db
+
+def main():
+    """执行自动备份"""
+    print(f"[{datetime.now().isoformat()}] 开始自动备份...")
+    
+    try:
+        backup_info = db.create_backup(manual=False)
+        print(f"备份成功: {backup_info['name']}")
+        print(f"大小: {backup_info['size']} bytes")
+        print(f"位置: {backup_info['path']}")
+        
+        # 清理旧备份
+        db._cleanup_old_backups()
+        print("旧备份清理完成")
+        
+    except Exception as e:
+        print(f"备份失败: {e}")
+        sys.exit(1)
+
+if __name__ == '__main__':
+    from datetime import datetime
+    main()

xian_favor/api.py

@@ -134,6 +134,71 @@ def reopen_item(item_id):
     return jsonify({'success': True, 'data': item})
 
 
+@app.route('/api/items/<int:item_id>/convert', methods=['POST'])
+def convert_item(item_id):
+    """将收藏转换为待办"""
+    item = db.get_item(item_id)
+    if not item:
+        return jsonify({'success': False, 'error': '条目不存在'}), 404
+    
+    # 不能转换已经是待办的
+    if item['type'] == 'todo':
+        return jsonify({'success': False, 'error': '已经是待办事项'}), 400
+    
+    data = request.get_json() or {}
+    mode = data.get('mode', 'convert')  # convert 或 copy
+    
+    if mode not in ['convert', 'copy']:
+        return jsonify({'success': False, 'error': '无效转换模式'}), 400
+    
+    # 构建待办数据
+    todo_data = {
+        'type': 'todo',
+        'title': data.get('title') or item['title'] or f'{item["type"]}收藏',
+        'status': data.get('status', 'pending'),
+        'priority': data.get('priority', 'medium'),
+        'due_date': data.get('due_date'),
+        'tags': item['tags'],  # 继承原标签
+    }
+    
+    # 根据原类型处理内容
+    if item['type'] == 'text':
+        # 文本：content 放到 note
+        todo_data['note'] = item['content'] or ''
+        if item['note']:
+            todo_data['note'] += '\n\n' + item['note']
+    elif item['type'] == 'link':
+        # 链接：url 放到 note，保留链接可点击
+        todo_data['note'] = f'链接: {item["url"]}\n\n'
+        if item['content']:
+            todo_data['note'] += item['content'] + '\n\n'
+        if item['note']:
+            todo_data['note'] += item['note']
+        # url 字段也保留（方便后续操作）
+        todo_data['content'] = item['url']
+    elif item['type'] == 'column':
+        # 专栏：url + source 放到 note
+        todo_data['note'] = f'专栏: {item["url"]}\n'
+        if item['source']:
+            todo_data['note'] += f'来源: {item["source"]}\n\n'
+        if item['content']:
+            todo_data['note'] += item['content'] + '\n\n'
+        if item['note']:
+            todo_data['note'] += item['note']
+        todo_data['content'] = item['url']
+    
+    if mode == 'convert':
+        # 直接转换：更新原条目
+        db.update_item(item_id, **todo_data)
+        result = db.get_item(item_id)
+        return jsonify({'success': True, 'data': result, 'mode': 'convert'})
+    else:
+        # 复制创建：新建待办，原条目保留
+        new_id = db.create_item(**todo_data)
+        result = db.get_item(new_id)
+        return jsonify({'success': True, 'data': result, 'mode': 'copy', 'original_id': item_id})
+
+
 @app.route('/api/tags', methods=['GET'])
 def list_tags():
     """列出标签"""
@@ -446,6 +511,44 @@ def send_email():
         return jsonify({'success': False, 'error': f'发送失败: {str(e)}'}), 500
 
 
+# ============ 备份管理 API ============
+
+@app.route('/api/backups', methods=['GET'])
+def list_backups():
+    """列出所有备份"""
+    backups = db.list_backups()
+    return jsonify({'success': True, 'data': backups})
+
+
+@app.route('/api/backups', methods=['POST'])
+def create_backup():
+    """创建手动备份"""
+    try:
+        backup_info = db.create_backup(manual=True)
+        return jsonify({'success': True, 'data': backup_info}), 201
+    except Exception as e:
+        return jsonify({'success': False, 'error': str(e)}), 500
+
+
+@app.route('/api/backups/<backup_name>', methods=['POST'])
+def restore_backup(backup_name):
+    """恢复备份"""
+    try:
+        if db.restore_backup(backup_name):
+            return jsonify({'success': True, 'message': f'已恢复备份 {backup_name}'})
+        return jsonify({'success': False, 'error': '备份不存在'}), 404
+    except Exception as e:
+        return jsonify({'success': False, 'error': str(e)}), 500
+
+
+@app.route('/api/backups/<backup_name>', methods=['DELETE'])
+def delete_backup(backup_name):
+    """删除备份"""
+    if db.delete_backup(backup_name):
+        return jsonify({'success': True})
+    return jsonify({'success': False, 'error': '备份不存在'}), 404
+
+
 # ============ Web 页面 ============
 
 @app.route('/')
@@ -474,11 +577,11 @@ INDEX_TEMPLATE = '''
         .content { padding: 20px; }
         .card { margin-bottom: 8px; transition: transform 0.2s; }
         .card:hover { transform: translateY(-2px); box-shadow: 0 4px 12px rgba(0,0,0,0.15); }
-        .card-body { padding: 10px 15px; }
+        .card-body { padding: 8px 12px; }
         .tag { margin-right: 5px; }
         .item-card { font-size: 14px; }
-        .item-card h6 { font-size: 14px; margin-bottom: 4px; }
-        .item-card p { margin-bottom: 4px; }
+        .item-card h6 { font-size: 14px; margin-bottom: 2px; }
+        .item-card p { margin-bottom: 2px; }
         .item-card .text-muted.small { font-size: 12px; }
         .type-text { border-left: 4px solid #17a2b8; }
         .type-link { border-left: 4px solid #28a745; }
@@ -514,6 +617,7 @@ INDEX_TEMPLATE = '''
                 <hr class="border-secondary">
                 <a href="#" onclick="showTagManager(); return false;"><i class="bi bi-tags"></i> 标签管理</a>
                 <a href="#" onclick="showEmailManager(); return false;"><i class="bi bi-envelope"></i> 邮箱管理</a>
+                <a href="#" onclick="showBackupManager(); return false;"><i class="bi bi-archive"></i> 备份管理</a>
             </nav>
         </div>
         
@@ -544,12 +648,21 @@ INDEX_TEMPLATE = '''
                 <button class="btn btn-outline-info me-2" onclick="showAIAddModal()" title="AI自动添加">
                     <i class="bi bi-robot"></i> AI添加
                 </button>
+                <button class="btn btn-outline-secondary me-1" onclick="showAddModal('text')" title="添加文本">
+                    <i class="bi bi-file-text"></i>
+                </button>
+                <button class="btn btn-outline-success me-1" onclick="showAddModal('link')" title="添加链接">
+                    <i class="bi bi-link-45deg"></i>
+                </button>
+                <button class="btn btn-outline-warning me-1" onclick="showAddModal('todo')" title="添加待办">
+                    <i class="bi bi-check2-square"></i>
+                </button>
+                <button class="btn btn-outline-primary me-1" onclick="showAddModal('column')" title="添加专栏">
+                    <i class="bi bi-newspaper"></i>
+                </button>
                 <button class="btn btn-outline-success me-2" onclick="exportData()" title="导出JSON">
                     <i class="bi bi-download"></i> 导出
                 </button>
-                <button class="btn btn-primary" data-bs-toggle="modal" data-bs-target="#addModal">
-                    <i class="bi bi-plus-lg"></i> 添加
-                </button>
             </div>
             
             <!-- 统计卡片 -->
@@ -602,20 +715,15 @@ INDEX_TEMPLATE = '''
     <div class="modal-dialog modal-lg">
         <div class="modal-content">
             <div class="modal-header">
-                <h5 class="modal-title">添加条目</h5>
+                <h5 class="modal-title">
+                    <span id="addModalIcon"></span> 
+                    <span id="addModalTitle">添加条目</span>
+                </h5>
                 <button type="button" class="btn-close" data-bs-dismiss="modal"></button>
             </div>
             <div class="modal-body">
                 <form id="addForm">
-                    <div class="mb-3">
-                        <label class="form-label">类型</label>
-                        <select id="addType" class="form-select">
-                            <option value="text">📝 文本</option>
-                            <option value="link">🔗 链接</option>
-                            <option value="column">📰 专栏</option>
-                            <option value="todo">✅ 待办</option>
-                        </select>
-                    </div>
+                    <input type="hidden" id="addType" value="text">
                     <div class="mb-3">
                         <label class="form-label">标题</label>
                         <input type="text" id="addTitle" class="form-control" placeholder="可选">
@@ -626,11 +734,11 @@ INDEX_TEMPLATE = '''
                     </div>
                     <div class="mb-3" id="urlGroup" style="display:none;">
                         <label class="form-label">URL</label>
-                        <input type="url" id="addUrl" class="form-control">
+                        <input type="url" id="addUrl" class="form-control" placeholder="https://...">
                     </div>
                     <div class="mb-3" id="sourceGroup" style="display:none;">
                         <label class="form-label">来源</label>
-                        <input type="text" id="addSource" class="form-control">
+                        <input type="text" id="addSource" class="form-control" placeholder="专栏来源">
                     </div>
                     <div class="mb-3" id="todoFields" style="display:none;">
                         <div class="row">
@@ -653,8 +761,8 @@ INDEX_TEMPLATE = '''
                             </div>
                         </div>
                         <div class="mt-3">
-                            <label class="form-label">截止日期</label>
-                            <input type="date" id="addDueDate" class="form-control">
+                            <label class="form-label">截止时间</label>
+                            <input type="datetime-local" id="addDueDate" class="form-control">
                         </div>
                     </div>
                     <div class="mb-3">
@@ -691,6 +799,9 @@ INDEX_TEMPLATE = '''
                 </div>
             </div>
             <div class="modal-footer">
+                <button type="button" class="btn btn-outline-secondary" id="detailConvertBtn" onclick="showConvertModalFromDetail()" style="display:none;">
+                    <i class="bi bi-arrow-repeat"></i> 转为待办
+                </button>
                 <button type="button" class="btn btn-outline-primary" onclick="openEditModalFromDetail()">
                     <i class="bi bi-pencil"></i> 编辑
                 </button>
@@ -757,8 +868,8 @@ INDEX_TEMPLATE = '''
                             </div>
                         </div>
                         <div class="mt-3">
-                            <label class="form-label">截止日期</label>
-                            <input type="date" id="editDueDate" class="form-control">
+                            <label class="form-label">截止时间</label>
+                            <input type="datetime-local" id="editDueDate" class="form-control">
                         </div>
                     </div>
                     <div class="mb-3">
@@ -882,6 +993,41 @@ INDEX_TEMPLATE = '''
     </div>
 </div>
 
+<!-- 备份管理模态框 -->
+<div class="modal fade" id="backupModal" tabindex="-1">
+    <div class="modal-dialog modal-lg">
+        <div class="modal-content">
+            <div class="modal-header bg-info text-white">
+                <h5 class="modal-title"><i class="bi bi-archive"></i> 备份管理</h5>
+                <button type="button" class="btn-close btn-close-white" data-bs-dismiss="modal"></button>
+            </div>
+            <div class="modal-body">
+                <div class="mb-3">
+                    <button class="btn btn-primary" onclick="createManualBackup()">
+                        <i class="bi bi-plus-circle"></i> 立即备份
+                    </button>
+                    <span class="text-muted ms-3">自动备份：每天 04:00</span>
+                </div>
+                <div class="alert alert-info">
+                    <strong>备份规则：</strong>
+                    <ul class="mb-0">
+                        <li>自动备份每天 04:00 执行</li>
+                        <li>保留最近 30 天的备份</li>
+                        <li>每月第一天的备份永久保留</li>
+                        <li>手动备份最多保留 10 个</li>
+                    </ul>
+                </div>
+                <div id="backupList">
+                    <!-- 动态填充 -->
+                </div>
+            </div>
+            <div class="modal-footer">
+                <button type="button" class="btn btn-secondary" data-bs-dismiss="modal">关闭</button>
+            </div>
+        </div>
+    </div>
+</div>
+
 <!-- AI自动添加模态框 -->
 <div class="modal fade" id="aiAddModal" tabindex="-1">
     <div class="modal-dialog modal-lg">
@@ -940,13 +1086,101 @@ INDEX_TEMPLATE = '''
     </div>
 </div>
 
+<!-- 转换为待办模态框 -->
+<div class="modal fade" id="convertModal" tabindex="-1">
+    <div class="modal-dialog modal-lg">
+        <div class="modal-content">
+            <div class="modal-header">
+                <h5 class="modal-title"><i class="bi bi-arrow-repeat"></i> 转为待办</h5>
+                <button type="button" class="btn-close" data-bs-dismiss="modal"></button>
+            </div>
+            <div class="modal-body">
+                <input type="hidden" id="convertItemId">
+                
+                <div class="mb-3">
+                    <label class="form-label fw-bold">转换方式</label>
+                    <div class="form-check">
+                        <input class="form-check-input" type="radio" name="convertMode" id="modeConvert" value="convert">
+                        <label class="form-check-label" for="modeConvert">
+                            <strong>直接转换</strong> - 原收藏变为待办，数据合并
+                        </label>
+                    </div>
+                    <div class="form-check">
+                        <input class="form-check-input" type="radio" name="convertMode" id="modeCopy" value="copy" checked>
+                        <label class="form-check-label" for="modeCopy">
+                            <strong>复制创建</strong> - 保留原收藏，新建待办任务
+                        </label>
+                    </div>
+                </div>
+                
+                <hr>
+                
+                <div class="mb-3">
+                    <label class="form-label">待办标题</label>
+                    <input type="text" id="convertTitle" class="form-control">
+                </div>
+                
+                <div class="row mb-3">
+                    <div class="col">
+                        <label class="form-label">状态</label>
+                        <select id="convertStatus" class="form-select">
+                            <option value="pending">⏳ 待处理</option>
+                            <option value="in_progress">🔄 进行中</option>
+                        </select>
+                    </div>
+                    <div class="col">
+                        <label class="form-label">优先级</label>
+                        <select id="convertPriority" class="form-select">
+                            <option value="low">🟢 低</option>
+                            <option value="medium" selected>🟡 中</option>
+                            <option value="high">🟠 高</option>
+                            <option value="urgent">🔴 紧急</option>
+                        </select>
+                    </div>
+                    <div class="col">
+                        <label class="form-label">截止时间</label>
+                        <input type="datetime-local" id="convertDueDate" class="form-control">
+                    </div>
+                </div>
+                
+                <div class="mb-3">
+                    <label class="form-label text-muted">内容预览（转换后会合并到待办备注）</label>
+                    <div id="convertPreview" class="border rounded p-2 bg-light" style="max-height: 150px; overflow-y: auto; white-space: pre-wrap; word-break: break-all;">
+                        <!-- 动态填充 -->
+                    </div>
+                </div>
+            </div>
+            <div class="modal-footer">
+                <button type="button" class="btn btn-secondary" data-bs-dismiss="modal">取消</button>
+                <button type="button" class="btn btn-primary" onclick="executeConvert()">
+                    <i class="bi bi-check"></i> 确认转换
+                </button>
+            </div>
+        </div>
+    </div>
+</div>
+
 <script src="https://cdn.jsdelivr.net/npm/bootstrap@5.3.0/dist/js/bootstrap.bundle.min.js"></script>
 <script>
 const API_BASE = '/api';
 let currentFilter = { type: '', status: '' };
+let currentPage = 1;
+const pageSize = 20;
+function debounce(fn, delay) {
+    let timer;
+    return function(...args) {
+        clearTimeout(timer);
+        timer = setTimeout(() => fn.apply(this, args), delay);
+    };
+}
 
 // 初始化
 document.addEventListener('DOMContentLoaded', async () => {
+    // 确保初始状态清空
+    document.getElementById('searchInput').value = '';
+    document.getElementById('typeFilter').value = '';
+    currentFilter = { type: '', status: '' };
+    
     await loadStats(); // 先加载统计，确保总数可用
     loadItems();
     loadTags();
@@ -962,22 +1196,17 @@ document.addEventListener('DOMContentLoaded', async () => {
     // 标签搜索实时过滤
     document.getElementById('tagSearch')?.addEventListener('input', debounce(loadTagManagerList, 300));
     
-    // 类型切换时显示/隐藏字段
-    document.getElementById('addType').addEventListener('change', (e) => {
-        const type = e.target.value;
-        document.getElementById('contentGroup').style.display = type === 'text' ? 'block' : 'none';
-        document.getElementById('urlGroup').style.display = ['link', 'column'].includes(type) ? 'block' : 'none';
-        document.getElementById('sourceGroup').style.display = type === 'column' ? 'block' : 'none';
-        document.getElementById('todoFields').style.display = type === 'todo' ? 'block' : 'none';
-    });
-    
     // 编辑时类型切换
     document.getElementById('editType').addEventListener('change', (e) => {
         updateEditFieldsByType(e.target.value);
     });
     
-    // 搜索
-    document.getElementById('searchInput').addEventListener('input', debounce(loadItems, 300));
+    // 搜索 - 直接绑定，不用 debounce
+    let searchTimer;
+    document.getElementById('searchInput').addEventListener('input', (e) => {
+        clearTimeout(searchTimer);
+        searchTimer = setTimeout(() => loadItems(), 300);
+    });
     
     // 类型过滤
     document.getElementById('typeFilter').addEventListener('change', (e) => {
@@ -1006,9 +1235,6 @@ document.addEventListener('DOMContentLoaded', async () => {
 });
 
 // 加载列表
-let currentPage = 1;
-const pageSize = 20;
-
 async function loadItems(page = 1) {
     currentPage = page;
     const keyword = document.getElementById('searchInput').value;
@@ -1042,14 +1268,18 @@ function renderItems(items) {
                         <h6 class="card-title text-truncate mb-1 ${item.type === 'todo' && item.status === 'completed' ? 'text-muted' : ''}">
                             ${getTypeIcon(item.type)} ${item.title || truncate(item.content || item.url, 30)}
                             ${item.type === 'todo' && item.status === 'completed' ? ' ✓' : ''}
+                            <span style="font-size:10px; opacity:0.5; margin-left:8px;">
+                                ${formatShortDate(item.created_at)}${item.updated_at && item.updated_at !== item.created_at ? '→' + formatShortDate(item.updated_at) : ''}
+                            </span>
                         </h6>
                         <p class="card-text text-muted small mb-0 text-truncate" style="font-size:12px;">
                             ${item.url ? truncate(item.url, 50) : item.content ? truncate(item.content, 50) : item.note ? truncate(item.note, 50) : ''}
-                            ${item.type === 'todo' ? `${getStatusLabelShort(item.status)} ${getPriorityLabelShort(item.priority)} ${item.due_date ? '📅' + item.due_date : ''}` : ''}
+                            ${item.type === 'todo' ? `${getStatusLabelShort(item.status)} ${getPriorityLabelShort(item.priority)} ${item.due_date ? '📅' + formatDueDate(item.due_date) : ''}` : ''}
                         </p>
                     </div>
                     <div class="d-flex align-items-center gap-1 flex-wrap ms-2" onclick="event.stopPropagation();">
                         ${item.tags.slice(0, 2).map(t => `<span class="badge bg-secondary" style="font-size:10px;">${t}</span>`).join('')}
+                        ${item.type !== 'todo' ? `<button class="btn btn-sm btn-outline-secondary py-0 px-1" onclick="showConvertModal(${item.id})" title="转为待办"><i class="bi bi-arrow-repeat" style="font-size:11px;"></i></button>` : ''}
                         <button class="btn btn-sm btn-outline-info py-0 px-1" onclick="showSendEmailModal(${item.id})" title="发送邮件"><i class="bi bi-envelope" style="font-size:11px;"></i></button>
                         <button class="btn btn-sm btn-outline-primary py-0 px-1" onclick="openEditModal(${item.id})" title="编辑"><i class="bi bi-pencil" style="font-size:11px;"></i></button>
                         ${item.type === 'todo' && item.status !== 'completed' ? `<button class="btn btn-sm btn-outline-success py-0 px-1" onclick="completeItem(${item.id})" title="完成"><i class="bi bi-check-lg" style="font-size:11px;"></i></button>` : ''}
@@ -1127,6 +1357,37 @@ async function refreshData() {
     loadItems(currentPage);
 }
 
+// ============ 添加功能 ============
+
+// 快捷添加按钮
+function showAddModal(type) {
+    // 设置类型
+    document.getElementById('addType').value = type;
+    
+    // 设置弹窗标题和图标
+    const typeInfo = {
+        text: { icon: '📝', title: '添加文本' },
+        link: { icon: '🔗', title: '添加链接' },
+        column: { icon: '📰', title: '添加专栏' },
+        todo: { icon: '✅', title: '添加待办' }
+    };
+    
+    document.getElementById('addModalIcon').textContent = typeInfo[type].icon;
+    document.getElementById('addModalTitle').textContent = typeInfo[type].title;
+    
+    // 显示/隐藏对应字段
+    document.getElementById('contentGroup').style.display = type === 'text' ? 'block' : 'none';
+    document.getElementById('urlGroup').style.display = ['link', 'column'].includes(type) ? 'block' : 'none';
+    document.getElementById('sourceGroup').style.display = type === 'column' ? 'block' : 'none';
+    document.getElementById('todoFields').style.display = type === 'todo' ? 'block' : 'none';
+    
+    // 清空表单
+    document.getElementById('addForm').reset();
+    
+    // 打开弹窗
+    new bootstrap.Modal(document.getElementById('addModal')).show();
+}
+
 // 添加条目
 async function addItem() {
     const type = document.getElementById('addType').value;
@@ -1176,6 +1437,80 @@ async function reopenItem(id) {
     }
 }
 
+// ============ 转换为待办 ============
+
+let convertItemData = null;
+
+async function showConvertModal(itemId) {
+    const res = await fetch(`${API_BASE}/items/${itemId}`);
+    const data = await res.json();
+    
+    if (!data.success) return;
+    
+    convertItemData = data.data;
+    document.getElementById('convertItemId').value = itemId;
+    
+    // 设置默认标题
+    document.getElementById('convertTitle').value = convertItemData.title || '';
+    
+    // 重置选项（默认复制创建）
+    document.getElementById('modeCopy').checked = true;
+    document.getElementById('convertStatus').value = 'pending';
+    document.getElementById('convertPriority').value = 'medium';
+    document.getElementById('convertDueDate').value = '';
+    
+    // 显示内容预览
+    let preview = '';
+    if (convertItemData.type === 'text') {
+        preview = convertItemData.content || '';
+    } else if (convertItemData.type === 'link') {
+        preview = `链接: ${convertItemData.url}`;
+        if (convertItemData.content) preview += `\n${convertItemData.content}`;
+    } else if (convertItemData.type === 'column') {
+        preview = `专栏: ${convertItemData.url}`;
+        if (convertItemData.source) preview += `\n来源: ${convertItemData.source}`;
+    }
+    if (convertItemData.note) preview += `\n\n备注: ${convertItemData.note}`;
+    
+    document.getElementById('convertPreview').textContent = preview || '(无内容)';
+    
+    new bootstrap.Modal(document.getElementById('convertModal')).show();
+}
+
+async function executeConvert() {
+    const itemId = document.getElementById('convertItemId').value;
+    const mode = document.querySelector('input[name="convertMode"]:checked').value;
+    
+    const data = {
+        mode: mode,
+        title: document.getElementById('convertTitle').value,
+        status: document.getElementById('convertStatus').value,
+        priority: document.getElementById('convertPriority').value,
+        due_date: document.getElementById('convertDueDate').value || null
+    };
+    
+    const res = await fetch(`${API_BASE}/items/${itemId}/convert`, {
+        method: 'POST',
+        headers: { 'Content-Type': 'application/json' },
+        body: JSON.stringify(data)
+    });
+    
+    const result = await res.json();
+    
+    if (result.success) {
+        bootstrap.Modal.getInstance(document.getElementById('convertModal')).hide();
+        
+        if (mode === 'copy') {
+            alert(`已创建新待办，原收藏保留\n新待办ID: ${result.data.id}`);
+        }
+        
+        refreshData();
+        loadReminders();
+    } else {
+        alert(result.error || '转换失败');
+    }
+}
+
 // 删除条目
 async function deleteItem(id) {
     if (!confirm('确认删除?')) return;
@@ -1198,6 +1533,10 @@ async function showDetail(id) {
     document.getElementById('detailTypeIcon').textContent = getTypeIcon(item.type);
     document.getElementById('detailTitle').textContent = item.title || '(无标题)';
     
+    // 非待办类型显示转换按钮
+    const convertBtn = document.getElementById('detailConvertBtn');
+    convertBtn.style.display = item.type !== 'todo' ? 'inline-block' : 'none';
+    
     let html = `<div class="mb-3"><strong>类型:</strong> ${getTypeLabel(item.type)}</div>`;
     
     if (item.url) {
@@ -1216,7 +1555,7 @@ async function showDetail(id) {
         html += `<div class="mb-3"><strong>状态:</strong> ${getStatusLabel(item.status)}</div>`;
         html += `<div class="mb-3"><strong>优先级:</strong> ${getPriorityLabel(item.priority)}</div>`;
         if (item.due_date) {
-            html += `<div class="mb-3"><strong>截止日期:</strong> ${item.due_date}</div>`;
+            html += `<div class="mb-3"><strong>截止时间:</strong> ${formatDueDateFull(item.due_date)}</div>`;
         }
     }
     
@@ -1249,6 +1588,12 @@ async function showDetail(id) {
     new bootstrap.Modal(document.getElementById('detailModal')).show();
 }
 
+// 从详情页打开转换
+function showConvertModalFromDetail() {
+    bootstrap.Modal.getInstance(document.getElementById('detailModal')).hide();
+    setTimeout(() => showConvertModal(currentDetailId), 300);
+}
+
 // 从详情页打开编辑
 function openEditModalFromDetail() {
     bootstrap.Modal.getInstance(document.getElementById('detailModal')).hide();
@@ -1282,7 +1627,21 @@ async function openEditModal(id) {
     if (type === 'todo') {
         document.getElementById('editStatus').value = item.status;
         document.getElementById('editPriority').value = item.priority;
-        document.getElementById('editDueDate').value = item.due_date || '';
+        // 处理 datetime-local 格式
+        if (item.due_date) {
+            // 尝试解析日期时间格式
+            let dueDate = item.due_date;
+            if (dueDate.includes('T')) {
+                // ISO 格式，截取到分钟
+                dueDate = dueDate.substring(0, 16);
+            } else if (dueDate.length === 10) {
+                // 只有日期，添加默认时间 00:00
+                dueDate = dueDate + 'T00:00';
+            }
+            document.getElementById('editDueDate').value = dueDate;
+        } else {
+            document.getElementById('editDueDate').value = '';
+        }
     }
     
     new bootstrap.Modal(document.getElementById('editModal')).show();
@@ -1361,10 +1720,79 @@ function truncate(str, len) {
     return str && str.length > len ? str.substring(0, len) + '...' : str || '';
 }
 
+// 简短日期格式（用于卡片显示）
+function formatShortDate(dateStr) {
+    if (!dateStr) return '';
+    const date = new Date(dateStr);
+    const month = String(date.getMonth() + 1).padStart(2, '0');
+    const day = String(date.getDate()).padStart(2, '0');
+    const hour = String(date.getHours()).padStart(2, '0');
+    const min = String(date.getMinutes()).padStart(2, '0');
+    return `${month}-${day} ${hour}:${min}`;
+}
+
 function formatDate(dateStr) {
     return new Date(dateStr).toLocaleString('zh-CN');
 }
 
+// 格式化截止时间（友好显示）
+function formatDueDate(dueDate) {
+    if (!dueDate) return '';
+    
+    let date;
+    if (dueDate.includes('T')) {
+        date = new Date(dueDate);
+    } else if (dueDate.length === 10) {
+        // 只有日期
+        date = new Date(dueDate + 'T00:00:00');
+    } else {
+        date = new Date(dueDate);
+    }
+    
+    // 格式化为友好格式
+    const now = new Date();
+    const today = new Date(now.getFullYear(), now.getMonth(), now.getDate());
+    const targetDay = new Date(date.getFullYear(), date.getMonth(), date.getDate());
+    const daysDiff = Math.floor((targetDay - today) / (1000 * 60 * 60 * 24));
+    
+    let datePart;
+    if (daysDiff === 0) {
+        datePart = '今天';
+    } else if (daysDiff === 1) {
+        datePart = '明天';
+    } else if (daysDiff === -1) {
+        datePart = '昨天';
+    } else {
+        datePart = date.toLocaleDateString('zh-CN', {month: 'short', day: 'numeric'});
+    }
+    
+    const timePart = date.toLocaleTimeString('zh-CN', {hour: '2-digit', minute: '2-digit'});
+    
+    return `${datePart} ${timePart}`;
+}
+
+// 格式化截止时间（完整显示）
+function formatDueDateFull(dueDate) {
+    if (!dueDate) return '';
+    
+    let date;
+    if (dueDate.includes('T')) {
+        date = new Date(dueDate);
+    } else if (dueDate.length === 10) {
+        date = new Date(dueDate + 'T00:00:00');
+    } else {
+        date = new Date(dueDate);
+    }
+    
+    return date.toLocaleString('zh-CN', {
+        year: 'numeric',
+        month: 'long',
+        day: 'numeric',
+        hour: '2-digit',
+        minute: '2-digit'
+    });
+}
+
 function escapeHtml(str) {
     if (!str) return '';
     return str.replace(/&/g, '&amp;').replace(/</g, '&lt;').replace(/>/g, '&gt;');
@@ -1680,6 +2108,106 @@ async function showEmailManager() {
     new bootstrap.Modal(document.getElementById('emailManagerModal')).show();
 }
 
+// ============ 备份管理 ============
+
+async function showBackupManager() {
+    await loadBackupList();
+    new bootstrap.Modal(document.getElementById('backupModal')).show();
+}
+
+async function loadBackupList() {
+    const res = await fetch(`${API_BASE}/backups`);
+    const data = await res.json();
+    if (!data.success) return;
+    
+    const container = document.getElementById('backupList');
+    
+    if (!data.data.length) {
+        container.innerHTML = '<div class="text-center text-muted py-3">暂无备份</div>';
+        return;
+    }
+    
+    container.innerHTML = data.data.map(backup => `
+        <div class="d-flex justify-content-between align-items-center p-2 border-bottom rounded mb-1 ${backup.manual ? 'bg-light' : ''}">
+            <div>
+                <strong>${backup.name}</strong>
+                ${backup.manual ? '<span class="badge bg-primary ms-1">手动</span>' : ''}
+                ${backup.is_first_of_month ? '<span class="badge bg-success ms-1">月首</span>' : ''}
+                <br>
+                <small class="text-muted">
+                    ${formatBackupDate(backup.created_at)} | 
+                    ${formatBackupSize(backup.size)}
+                </small>
+            </div>
+            <div class="btn-group btn-group-sm">
+                <button class="btn btn-outline-success" onclick="restoreBackup('${backup.name}')" title="恢复">
+                    <i class="bi bi-arrow-counterclockwise"></i> 恢复
+                </button>
+                <button class="btn btn-outline-danger" onclick="deleteBackupConfirm('${backup.name}')" title="删除">
+                    <i class="bi bi-trash"></i>
+                </button>
+            </div>
+        </div>
+    `).join('');
+}
+
+async function createManualBackup() {
+    const res = await fetch(`${API_BASE}/backups`, { method: 'POST' });
+    const data = await res.json();
+    
+    if (data.success) {
+        alert('备份创建成功！');
+        loadBackupList();
+        loadStats();
+    } else {
+        alert('备份失败: ' + data.error);
+    }
+}
+
+async function restoreBackup(name) {
+    if (!confirm(`确认恢复备份 "${name}"？\n当前数据将被覆盖！`)) return;
+    
+    const res = await fetch(`${API_BASE}/backups/${name}`, { method: 'POST' });
+    const data = await res.json();
+    
+    if (data.success) {
+        alert('备份已恢复！页面将刷新...');
+        location.reload();
+    } else {
+        alert('恢复失败: ' + data.error);
+    }
+}
+
+async function deleteBackupConfirm(name) {
+    if (!confirm(`确认删除备份 "${name}"？`)) return;
+    
+    const res = await fetch(`${API_BASE}/backups/${name}`, { method: 'DELETE' });
+    const data = await res.json();
+    
+    if (data.success) {
+        loadBackupList();
+    } else {
+        alert('删除失败: ' + data.error);
+    }
+}
+
+function formatBackupDate(dateStr) {
+    const date = new Date(dateStr);
+    return date.toLocaleString('zh-CN', {
+        year: 'numeric',
+        month: '2-digit',
+        day: '2-digit',
+        hour: '2-digit',
+        minute: '2-digit'
+    });
+}
+
+function formatBackupSize(bytes) {
+    if (bytes < 1024) return bytes + ' B';
+    if (bytes < 1024 * 1024) return (bytes / 1024).toFixed(1) + ' KB';
+    return (bytes / 1024 / 1024).toFixed(2) + ' MB';
+}
+
 async function loadEmailManagerList() {
     const res = await fetch(`${API_BASE}/emails`);
     const data = await res.json();
@@ -1857,14 +2385,6 @@ async function sendItemEmail() {
     }
 }
 
-function debounce(fn, delay) {
-    let timer;
-    return function(...args) {
-        clearTimeout(timer);
-        timer = setTimeout(() => fn.apply(this, args), delay);
-    };
-}
-
 // ============ 提醒功能 ============
 
 let reminderData = null;
@@ -1935,7 +2455,7 @@ function showRemindersModal() {
             html += `<div class="list-group-item list-group-item-danger d-flex justify-content-between align-items-center">
                 <div>
                     <strong>${item.title || '(无标题)'}</strong>
-                    <br><small class="text-muted">截止: ${item.due_date} | 已过期 ${item.days_overdue} 天</small>
+                    <br><small class="text-muted">截止: ${formatDueDateFull(item.due_date)} | 已过期 ${item.days_overdue} 天</small>
                 </div>
                 <div>
                     <button class="btn btn-sm btn-success" onclick="completeReminder(${item.id})" title="完成">
@@ -1958,7 +2478,7 @@ function showRemindersModal() {
             html += `<div class="list-group-item list-group-item-warning d-flex justify-content-between align-items-center">
                 <div>
                     <strong>${item.title || '(无标题)'}</strong>
-                    <br><small class="text-muted">截止: ${item.due_date}</small>
+                    <br><small class="text-muted">截止: ${formatDueDateFull(item.due_date)}</small>
                 </div>
                 <div>
                     <button class="btn btn-sm btn-success" onclick="completeReminder(${item.id})" title="完成">
@@ -1981,7 +2501,7 @@ function showRemindersModal() {
             html += `<div class="list-group-item list-group-item-info d-flex justify-content-between align-items-center">
                 <div>
                     <strong>${item.title || '(无标题)'}</strong>
-                    <br><small class="text-muted">截止: ${item.due_date}</small>
+                    <br><small class="text-muted">截止: ${formatDueDateFull(item.due_date)}</small>
                 </div>
                 <div>
                     <button class="btn btn-sm btn-success" onclick="completeReminder(${item.id})" title="完成">

xian_favor/db.py

@@ -2,12 +2,17 @@
 
 import sqlite3
 import json
-from datetime import datetime
+import shutil
+import os
+from datetime import datetime, timedelta
 from typing import Optional, List, Dict, Any
 from contextlib import contextmanager
 
 from .config import DATABASE_URL, TODO_STATUS, PRIORITY_LEVELS
 
+# 备份目录
+BACKUP_DIR = os.path.join(os.path.dirname(DATABASE_URL), 'backups')
+
 
 class Database:
     """SQLite数据库管理"""
@@ -464,21 +469,36 @@ class Database:
                 item['tags'] = self._get_item_tags(conn, item['id'])
                 
                 try:
-                    due_date = datetime.strptime(item['due_date'], '%Y-%m-%d')
-                    # 计算距离到期的时间
-                    days_left = (due_date.date() - now.date()).days
+                    due_date_str = item['due_date']
+                    # 支持多种日期格式
+                    if 'T' in due_date_str:
+                        # ISO 格式：2026-04-16T14:30
+                        due_date = datetime.strptime(due_date_str[:16], '%Y-%m-%dT%H:%M')
+                    elif len(due_date_str) == 10:
+                        # 只有日期：2026-04-16，视为当天 23:59:59
+                        due_date = datetime.strptime(due_date_str, '%Y-%m-%d').replace(hour=23, minute=59, second=59)
+                    else:
+                        # 其他格式，尝试解析
+                        due_date = datetime.strptime(due_date_str.split('.')[0], '%Y-%m-%dT%H:%M:%S')
                     
-                    if days_left < 0:
+                    # 计算距离到期的时间
+                    time_left = due_date - now
+                    
+                    if time_left.total_seconds() < 0:
                         # 已过期
-                        item['days_overdue'] = abs(days_left)
+                        days_overdue = abs(int(time_left.total_seconds() / 86400))
+                        item['days_overdue'] = days_overdue
                         reminders['overdue'].append(item)
-                    elif days_left == 0:
-                        # 今天到期
+                    elif time_left.total_seconds() < 86400:  # 24小时内
+                        # 判断是今天还是明天
+                        if due_date.date() == now.date():
+                            reminders['due_today'].append(item)
+                        else:
+                            reminders['due_soon'].append(item)
+                    elif due_date.date() == now.date():
+                        # 今天到期（超过24小时的情况，比如现在凌晨，截止时间是晚上）
                         reminders['due_today'].append(item)
-                    elif days_left == 1:
-                        # 明天到期（24小时内）
-                        reminders['due_soon'].append(item)
-                except ValueError:
+                except (ValueError, AttributeError) as e:
                     # 日期格式错误，跳过
                     continue
             
@@ -486,6 +506,184 @@ class Database:
             reminders['total'] = len(reminders['overdue']) + len(reminders['due_today']) + len(reminders['due_soon'])
             
             return reminders
+    
+    # ============ 备份操作 ============
+    
+    def create_backup(self, manual: bool = False) -> Dict[str, Any]:
+        """创建数据库备份"""
+        import os
+        
+        # 确保备份目录存在
+        os.makedirs(BACKUP_DIR, exist_ok=True)
+        
+        now = datetime.now()
+        backup_name = now.strftime('%Y-%m-%d_%H%M%S')
+        if manual:
+            backup_name += '_manual'
+        backup_path = os.path.join(BACKUP_DIR, f'{backup_name}.db')
+        
+        # 复制数据库文件
+        shutil.copy2(self.db_path, backup_path)
+        
+        # 获取备份信息
+        backup_info = {
+            'name': backup_name,
+            'path': backup_path,
+            'size': os.path.getsize(backup_path),
+            'created_at': now.isoformat(),
+            'manual': manual,
+            'is_first_of_month': now.day == 1
+        }
+        
+        # 保存备份元数据
+        self._save_backup_meta(backup_info)
+        
+        # 清理旧备份
+        self._cleanup_old_backups()
+        
+        return backup_info
+    
+    def list_backups(self) -> List[Dict[str, Any]]:
+        """列出所有备份"""
+        import os
+        
+        if not os.path.exists(BACKUP_DIR):
+            return []
+        
+        # 读取备份元数据
+        meta_path = os.path.join(BACKUP_DIR, 'backup_meta.json')
+        if os.path.exists(meta_path):
+            with open(meta_path, 'r') as f:
+                backups = json.load(f)
+        else:
+            # 从文件重建元数据
+            backups = []
+            for f in os.listdir(BACKUP_DIR):
+                if f.endswith('.db'):
+                    path = os.path.join(BACKUP_DIR, f)
+                    backups.append({
+                        'name': f.replace('.db', ''),
+                        'path': path,
+                        'size': os.path.getsize(path),
+                        'created_at': datetime.fromtimestamp(os.path.getmtime(path)).isoformat(),
+                        'manual': '_manual' in f,
+                        'is_first_of_month': self._is_first_of_month_filename(f)
+                    })
+        
+        # 按时间倒序排列
+        backups.sort(key=lambda x: x['created_at'], reverse=True)
+        
+        return backups
+    
+    def restore_backup(self, backup_name: str) -> bool:
+        """恢复备份"""
+        import os
+        
+        backup_path = os.path.join(BACKUP_DIR, f'{backup_name}.db')
+        if not os.path.exists(backup_path):
+            return False
+        
+        # 先备份当前数据库（以防万一）
+        current_backup = self.db_path + '.before_restore'
+        shutil.copy2(self.db_path, current_backup)
+        
+        # 恢复备份
+        shutil.copy2(backup_path, self.db_path)
+        
+        return True
+    
+    def delete_backup(self, backup_name: str) -> bool:
+        """删除备份"""
+        import os
+        
+        backup_path = os.path.join(BACKUP_DIR, f'{backup_name}.db')
+        if not os.path.exists(backup_path):
+            return False
+        
+        os.remove(backup_path)
+        
+        # 更新元数据
+        self._remove_backup_meta(backup_name)
+        
+        return True
+    
+    def _save_backup_meta(self, backup_info: Dict[str, Any]):
+        """保存备份元数据"""
+        import os
+        
+        meta_path = os.path.join(BACKUP_DIR, 'backup_meta.json')
+        
+        # 读取现有元数据
+        backups = []
+        if os.path.exists(meta_path):
+            with open(meta_path, 'r') as f:
+                backups = json.load(f)
+        
+        # 添加新备份
+        backups.append(backup_info)
+        
+        # 保存
+        with open(meta_path, 'w') as f:
+            json.dump(backups, f, indent=2)
+    
+    def _remove_backup_meta(self, backup_name: str):
+        """从元数据中删除备份"""
+        import os
+        
+        meta_path = os.path.join(BACKUP_DIR, 'backup_meta.json')
+        if not os.path.exists(meta_path):
+            return
+        
+        with open(meta_path, 'r') as f:
+            backups = json.load(f)
+        
+        backups = [b for b in backups if b['name'] != backup_name]
+        
+        with open(meta_path, 'w') as f:
+            json.dump(backups, f, indent=2)
+    
+    def _is_first_of_month_filename(self, filename: str) -> bool:
+        """判断是否是每月第一天的备份"""
+        # 格式：2026-04-01_040000.db 或 2026-05-01_...
+        try:
+            date_part = filename.split('_')[0]
+            day = int(date_part.split('-')[2])
+            return day == 1
+        except:
+            return False
+    
+    def _cleanup_old_backups(self):
+        """清理旧备份：保留30天 + 每月第一天"""
+        import os
+        
+        backups = self.list_backups()
+        now = datetime.now()
+        keep_paths = []
+        
+        for backup in backups:
+            backup_date = datetime.fromisoformat(backup['created_at'])
+            days_old = (now - backup_date).days
+            
+            # 保留条件：
+            # 1. 手动备份永久保留（最多10个）
+            # 2. 30天内的备份
+            # 3. 每月第一天的备份
+            
+            if backup['manual']:
+                # 手动备份保留，但最多10个
+                manual_backups = [b for b in backups if b['manual']]
+                if manual_backups.index(backup) < 10:
+                    keep_paths.append(backup['path'])
+                else:
+                    self.delete_backup(backup['name'])
+            elif days_old <= 30:
+                keep_paths.append(backup['path'])
+            elif backup['is_first_of_month']:
+                # 每月第一天永久保留
+                keep_paths.append(backup['path'])
+            else:
+                # 删除
+                self.delete_backup(backup['name'])
 
 
 # 全局数据库实例