feat: 首页添加导出按钮，一键导出JSON格式

xian_favor/api.py

@@ -246,6 +246,9 @@ INDEX_TEMPLATE = '''
                         <option value="todo">待办</option>
                     </select>
                 </div>
+                <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>
@@ -948,6 +951,29 @@ async function deleteTagManager(id, name) {
     loadItems();
 }
 
+// 导出数据
+async function exportData() {
+    const res = await fetch(`${API_BASE}/items?limit=1000`);
+    const data = await res.json();
+    
+    if (!data.success) {
+        alert('导出失败');
+        return;
+    }
+    
+    // 格式化JSON
+    const jsonStr = JSON.stringify(data.data, null, 2);
+    
+    // 创建下载
+    const blob = new Blob([jsonStr], { type: 'application/json' });
+    const url = URL.createObjectURL(blob);
+    const a = document.createElement('a');
+    a.href = url;
+    a.download = `xian_favor_export_${new Date().toISOString().slice(0,10)}.json`;
+    a.click();
+    URL.revokeObjectURL(url);
+}
+
 function debounce(fn, delay) {
     let timer;
     return function(...args) {