feat: 添加系统配置功能

- AI自动添加的大模型接口配置（URL/Key/Model）
- 服务器连接状态刷新频率配置
- 数据列表每页显示条数配置
- 草稿自动保存间隔配置
- 显示统计/阅读次数开关
- 配置保存到localStorage

xian_favor/api.py

@@ -1398,6 +1398,8 @@ INDEX_TEMPLATE = '''
                 <a href="#" onclick="showBackupManager(); return false;"><i class="bi bi-archive"></i> 备份管理</a>
                 <a href="#" onclick="showDrafts(); return false;"><i class="bi bi-file-earmark"></i> 草稿箱</a>
                 <a href="#" onclick="showTrash(); return false;"><i class="bi bi-trash"></i> 回收站</a>
+                <hr class="my-2">
+                <a href="#" onclick="showSystemConfig(); return false;"><i class="bi bi-gear"></i> 系统配置</a>
             </nav>
         </div>
         
@@ -2161,6 +2163,101 @@ INDEX_TEMPLATE = '''
     </div>
 </div>
 
+<!-- 系统配置模态框 -->
+<div class="modal fade" id="systemConfigModal" tabindex="-1">
+    <div class="modal-dialog">
+        <div class="modal-content">
+            <div class="modal-header">
+                <h5 class="modal-title"><i class="bi bi-gear"></i> 系统配置</h5>
+                <button type="button" class="btn-close" data-bs-dismiss="modal"></button>
+            </div>
+            <div class="modal-body">
+                <!-- AI添加配置 -->
+                <div class="mb-4">
+                    <h6 class="mb-3"><i class="bi bi-robot"></i> AI自动添加配置</h6>
+                    <div class="mb-3">
+                        <label class="form-label">大模型接口地址</label>
+                        <input type="text" id="configAIUrl" class="form-control" placeholder="http://192.168.2.5:1234/v1">
+                    </div>
+                    <div class="mb-3">
+                        <label class="form-label">API Key（可选）</label>
+                        <input type="text" id="configAIKey" class="form-control" placeholder="sk-xxx">
+                    </div>
+                    <div class="mb-3">
+                        <label class="form-label">模型名称</label>
+                        <input type="text" id="configAIModel" class="form-control" placeholder="qwen3.5-4b">
+                    </div>
+                </div>
+                
+                <!-- 连接状态配置 -->
+                <div class="mb-4">
+                    <h6 class="mb-3"><i class="bi bi-wifi"></i> 连接状态检测</h6>
+                    <div class="mb-3">
+                        <label class="form-label">刷新频率（秒）</label>
+                        <select id="configCheckInterval" class="form-select">
+                            <option value="3">3秒</option>
+                            <option value="5" selected>5秒</option>
+                            <option value="10">10秒</option>
+                            <option value="30">30秒</option>
+                            <option value="60">60秒</option>
+                        </select>
+                    </div>
+                </div>
+                
+                <!-- 显示配置 -->
+                <div class="mb-4">
+                    <h6 class="mb-3"><i class="bi bi-list"></i> 数据显示配置</h6>
+                    <div class="mb-3">
+                        <label class="form-label">每页显示条数</label>
+                        <select id="configPageSize" class="form-select">
+                            <option value="10">10条</option>
+                            <option value="20" selected>20条</option>
+                            <option value="30">30条</option>
+                            <option value="50">50条</option>
+                        </select>
+                    </div>
+                </div>
+                
+                <!-- 其他配置 -->
+                <div class="mb-3">
+                    <h6 class="mb-3"><i class="bi bi-sliders"></i> 其他配置</h6>
+                    <div class="mb-3">
+                        <label class="form-label">草稿自动保存间隔（秒）</label>
+                        <select id="configDraftInterval" class="form-select">
+                            <option value="2">2秒</option>
+                            <option value="5" selected>5秒</option>
+                            <option value="10">10秒</option>
+                            <option value="30">30秒</option>
+                            <option value="60">60秒</option>
+                        </select>
+                    </div>
+                    <div class="mb-3">
+                        <div class="form-check">
+                            <input class="form-check-input" type="checkbox" id="configShowStats" checked>
+                            <label class="form-check-label" for="configShowStats">
+                                显示内容统计（行数/字数）
+                            </label>
+                        </div>
+                    </div>
+                    <div class="mb-3">
+                        <div class="form-check">
+                            <input class="form-check-input" type="checkbox" id="configShowViews" checked>
+                            <label class="form-check-label" for="configShowViews">
+                                显示阅读次数
+                            </label>
+                        </div>
+                    </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-outline-warning" onclick="resetSystemConfig()">恢复默认</button>
+                <button type="button" class="btn btn-primary" onclick="saveSystemConfig()">保存配置</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';
@@ -2168,11 +2265,11 @@ let currentFilter = { type: '', status: '', starred: null, folder_id: null };
 let currentSort = { sort_by: '', sort_order: '' };
 let currentItems = [];  // 保存当前显示的数据，用于切换显示模式时重新渲染
 let currentPage = 1;
-const pageSize = 20;
+let pageSize = 20;  // 可配置的每页条数
 let allFolders = {};  // 按类型存储文件夹
 let isOnline = true;
 let connectionCheckTimer = null;
-const CONNECTION_CHECK_INTERVAL = 5000;  // 5秒检测一次
+let CONNECTION_CHECK_INTERVAL = 5000;  // 可配置的连接检测间隔（毫秒）
 const CONNECTION_TIMEOUT = 3000;  // 3秒超时
 
 function updateConnectionStatus(status) {
@@ -2295,6 +2392,9 @@ function debounce(fn, delay) {
 
 // 初始化
 document.addEventListener('DOMContentLoaded', async () => {
+    // 加载系统配置
+    loadSystemConfig();
+    
     // 启动连接状态检测
     startConnectionCheck();
     
@@ -3923,6 +4023,122 @@ function addTagToInput(inputId, tag) {
     }
 }
 
+// ============ 系统配置功能 ============
+
+// 系统配置对象
+let systemConfig = {
+    aiUrl: '',
+    aiKey: '',
+    aiModel: 'qwen3.5-4b',
+    checkInterval: 5,
+    pageSize: 20,
+    draftInterval: 5,
+    showStats: true,
+    showViews: true
+};
+
+// 加载配置
+function loadSystemConfig() {
+    const saved = localStorage.getItem('xianFavorConfig');
+    if (saved) {
+        try {
+            systemConfig = JSON.parse(saved);
+        } catch (e) {
+            console.error('加载配置失败', e);
+        }
+    }
+    
+    // 应用配置
+    applySystemConfig();
+}
+
+// 应用配置到系统
+function applySystemConfig() {
+    // 更新pageSize
+    if (systemConfig.pageSize) {
+        pageSize = systemConfig.pageSize;
+    }
+    
+    // 更新连接检测间隔
+    if (systemConfig.checkInterval) {
+        CONNECTION_CHECK_INTERVAL = systemConfig.checkInterval * 1000;
+        if (connectionCheckTimer) {
+            clearInterval(connectionCheckTimer);
+            connectionCheckTimer = setInterval(checkConnection, CONNECTION_CHECK_INTERVAL);
+        }
+    }
+}
+
+// 显示系统配置弹框
+function showSystemConfig() {
+    // 填充当前配置值
+    document.getElementById('configAIUrl').value = systemConfig.aiUrl || '';
+    document.getElementById('configAIKey').value = systemConfig.aiKey || '';
+    document.getElementById('configAIModel').value = systemConfig.aiModel || 'qwen3.5-4b';
+    document.getElementById('configCheckInterval').value = systemConfig.checkInterval || 5;
+    document.getElementById('configPageSize').value = systemConfig.pageSize || 20;
+    document.getElementById('configDraftInterval').value = systemConfig.draftInterval || 5;
+    document.getElementById('configShowStats').checked = systemConfig.showStats !== false;
+    document.getElementById('configShowViews').checked = systemConfig.showViews !== false;
+    
+    new bootstrap.Modal(document.getElementById('systemConfigModal')).show();
+}
+
+// 保存系统配置
+function saveSystemConfig() {
+    systemConfig = {
+        aiUrl: document.getElementById('configAIUrl').value.trim(),
+        aiKey: document.getElementById('configAIKey').value.trim(),
+        aiModel: document.getElementById('configAIModel').value.trim() || 'qwen3.5-4b',
+        checkInterval: parseInt(document.getElementById('configCheckInterval').value) || 5,
+        pageSize: parseInt(document.getElementById('configPageSize').value) || 20,
+        draftInterval: parseInt(document.getElementById('configDraftInterval').value) || 5,
+        showStats: document.getElementById('configShowStats').checked,
+        showViews: document.getElementById('configShowViews').checked
+    };
+    
+    // 保存到localStorage
+    localStorage.setItem('xianFavorConfig', JSON.stringify(systemConfig));
+    
+    // 应用配置
+    applySystemConfig();
+    
+    bootstrap.Modal.getInstance(document.getElementById('systemConfigModal')).hide();
+    
+    // 提示
+    alert('配置已保存！\n部分配置需要刷新页面才能生效。');
+}
+
+// 重置为默认配置
+function resetSystemConfig() {
+    if (!confirm('确认恢复默认配置？')) return;
+    
+    systemConfig = {
+        aiUrl: '',
+        aiKey: '',
+        aiModel: 'qwen3.5-4b',
+        checkInterval: 5,
+        pageSize: 20,
+        draftInterval: 5,
+        showStats: true,
+        showViews: true
+    };
+    
+    localStorage.setItem('xianFavorConfig', JSON.stringify(systemConfig));
+    
+    // 更新表单显示
+    showSystemConfig();
+}
+
+// 获取AI配置
+function getAIConfig() {
+    return {
+        url: systemConfig.aiUrl || 'http://192.168.2.5:1234/v1',
+        key: systemConfig.aiKey || '',
+        model: systemConfig.aiModel || 'qwen3.5-4b'
+    };
+}
+
 async function showTagManager() {
     await loadTagManagerList();
     new bootstrap.Modal(document.getElementById('tagManagerModal')).show();