feat: 添加未读提醒功能

- 数据列表中未读数据（views=0）显示特殊样式（黄色背景+红色边框+红点标记）
- 左侧类别显示未读数量（红色badge）
- API返回unread和unread_by_type统计数据

xian_favor/api.py

@@ -1208,6 +1208,17 @@ INDEX_TEMPLATE = '''
         .type-todo { border-left: 4px solid #ffc107; }
         .is-starred { border-left: 4px solid #ffc107; background: #fffbe6; }
         .is-starred:hover { background: #fff9e0; }
+        /* 未读数据样式 */
+        .unread-item { background: #fff3cd; border-left: 4px solid #dc3545; }
+        .unread-item:hover { background: #ffeaa7; }
+        .unread-dot { 
+            display: inline-block;
+            width: 8px;
+            height: 8px;
+            background: #dc3545;
+            border-radius: 50%;
+            margin-right: 4px;
+        }
         /* Markdown内容样式 */
         .markdown-content { line-height: 1.6; }
         .markdown-content h3 { font-size: 1.2em; margin-bottom: 0.5em; }
@@ -2610,12 +2621,16 @@ function renderItems(items) {
     
     const modeClass = displayMode === 'single' ? 'compact' : 'double-line';
     
-    container.innerHTML = items.map(item => `
+    container.innerHTML = items.map(item => {
-        <div class="card type-${item.type} item-card ${modeClass} ${item.is_starred ? 'is-starred' : ''}" style="cursor: pointer;" onclick="showDetail(${item.id})">
+        const unreadClass = (!item.views || item.views === 0) ? 'unread-item' : '';
+        const unreadBadge = (!item.views || item.views === 0) ? '<span class="unread-dot" title="未读"></span>' : '';
+        
+        return `<div class="card type-${item.type} item-card ${modeClass} ${item.is_starred ? 'is-starred' : ''} ${unreadClass}" style="cursor: pointer;" onclick="showDetail(${item.id})">
             <div class="card-body">
                 <div class="card-content">
                     <div class="card-main">
                         <h6 class="card-title text-truncate mb-1 ${item.type === 'todo' && item.status === 'completed' ? 'text-muted' : ''}">
+                            ${unreadBadge}
                             ${item.is_starred ? '<i class="bi bi-star-fill" style="color:#ffc107;"></i>' : ''} ${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;">
@@ -2646,7 +2661,7 @@ function renderItems(items) {
                 </div>
             </div>
         </div>
-    `).join('');
+    `}).join('');
 }
 
 // 渲染分页
@@ -2726,9 +2741,37 @@ async function loadStats() {
         document.getElementById('statPending').textContent = data.data.todo_status?.pending || 0;
         document.getElementById('statProgress').textContent = data.data.todo_status?.in_progress || 0;
         document.getElementById('statCompleted').textContent = data.data.todo_status?.completed || 0;
+        
+        // 更新左侧类别未读数量显示
+        updateUnreadCounts(data.data.unread_by_type || {});
     }
 }
 
+// 更新未读数量显示
+function updateUnreadCounts(unreadByType) {
+    const types = ['text', 'link', 'column', 'todo'];
+    types.forEach(type => {
+        const section = document.getElementById(`section-${type}`);
+        if (section) {
+            const count = unreadByType[type] || 0;
+            // 找到或创建未读数量badge
+            let badge = section.querySelector('.unread-badge');
+            if (count > 0) {
+                if (!badge) {
+                    badge = document.createElement('span');
+                    badge.className = 'unread-badge';
+                    badge.style.cssText = 'background:#dc3545;color:#fff;font-size:10px;padding:2px 6px;border-radius:10px;margin-left:8px;';
+                    section.querySelector('.section-header .header-left').appendChild(badge);
+                }
+                badge.textContent = count;
+                badge.style.display = 'inline';
+            } else if (badge) {
+                badge.style.display = 'none';
+            }
+        }
+    });
+}
+
 // 刷新数据（统计+列表）
 async function refreshData() {
     await loadStats();

xian_favor/db.py

@@ -919,15 +919,23 @@ class Database:
             stats = {}
             
             # 总数
-            cursor.execute("SELECT COUNT(*) as count FROM items")
+            cursor.execute("SELECT COUNT(*) as count FROM items WHERE is_deleted = 0")
             stats['total'] = cursor.fetchone()['count']
             
             # 按类型统计
-            cursor.execute("SELECT type, COUNT(*) as count FROM items GROUP BY type")
+            cursor.execute("SELECT type, COUNT(*) as count FROM items WHERE is_deleted = 0 GROUP BY type")
             stats['by_type'] = {row['type']: row['count'] for row in cursor.fetchall()}
             
+            # 未读数量统计（views = 0）
+            cursor.execute("SELECT COUNT(*) as count FROM items WHERE is_deleted = 0 AND (views IS NULL OR views = 0)")
+            stats['unread'] = cursor.fetchone()['count']
+            
+            # 按类型统计未读数量
+            cursor.execute("SELECT type, COUNT(*) as count FROM items WHERE is_deleted = 0 AND (views IS NULL OR views = 0) GROUP BY type")
+            stats['unread_by_type'] = {row['type']: row['count'] for row in cursor.fetchall()}
+            
             # 待办状态统计
-            cursor.execute("SELECT status, COUNT(*) as count FROM items WHERE type = 'todo' GROUP BY status")
+            cursor.execute("SELECT status, COUNT(*) as count FROM items WHERE type = 'todo' AND is_deleted = 0 GROUP BY status")
             stats['todo_status'] = {row['status']: row['count'] for row in cursor.fetchall()}
             
             # 标签数