fix: Cookie管理优化及刷新间隔补充

- monitor-server.js: Cookie存储改为Map合并机制，避免丢失CDN Cookie导致403
- checkActivity.js: 补上Cookie两步请求逻辑，修复无Cookie直接请求失败的问题
- public/index.html: 新增20秒刷新间隔选项

checkActivity.js

@@ -1,29 +1,86 @@
 // checkActivity.js
 const axios = require('axios');
 const cheerio = require('cheerio');
-const notifier = require('node-notifier'); // 新增桌面通知模块
+const notifier = require('node-notifier');
 
 const url = 'https://www.szhdy.com/activities/default.html?method=activity&id=9';
 const checkInterval = 300000; // 5分钟检查一次
 
-// 设置请求头，模拟浏览器（已包含完整浏览器特征）
 const headers = {
-  'User-Agent': 'Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/91.0.4472.124 Safari/537.36',
+  'User-Agent': 'Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/120.0.0.0 Safari/537.36',
   'Accept': 'text/html,application/xhtml+xml,application/xml;q=0.9,image/webp,*/*;q=0.8',
-  'Accept-Language': 'zh-CN,zh;q=0.8,en-US;q=0.5,en;q=0.3',
+  'Accept-Language': 'zh-CN,zh;q=0.9,en;q=0.8',
   'Connection': 'keep-alive',
   'Upgrade-Insecure-Requests': '1',
-  'Sec-Fetch-Dest': 'document',
-  'Sec-Fetch-Mode': 'navigate',
-  'Sec-Fetch-Site': 'none',
-  'Sec-Fetch-User': '?1'
 };
 
+// Cookie 管理
+let cookieJar = new Map();
+let cookieExpiry = 0;
+
+function mergeCookiesFromHeaders(setCookieHeaders) {
+  for (const header of setCookieHeaders) {
+    const pair = header.split(';')[0];
+    const eqIdx = pair.indexOf('=');
+    if (eqIdx > 0) {
+      cookieJar.set(pair.substring(0, eqIdx).trim(), pair.substring(eqIdx + 1).trim());
+    }
+  }
+}
+
+function getCookieString() {
+  return Array.from(cookieJar.entries()).map(([k, v]) => `${k}=${v}`).join('; ');
+}
+
+async function getValidCookies() {
+  if (cookieJar.size > 0 && Date.now() < cookieExpiry) {
+    return getCookieString();
+  }
+  console.log('[Cookie] 正在获取新的 Cookie...');
+  cookieJar.clear();
+  // 第一次请求拿 CDN Cookie（会返回 403，这是预期行为）
+  const res = await axios.get(url, {
+    headers,
+    maxRedirects: 0,
+    validateStatus: () => true, // 允许非 2xx 状态码
+  });
+  const setCookies = res.headers['set-cookie'] || [];
+  mergeCookiesFromHeaders(setCookies);
+  cookieExpiry = Date.now() + 3600 * 1000;
+  console.log('[Cookie] 获取成功:', getCookieString());
+  return getCookieString();
+}
 
 async function checkActivity() {
   try {
-    const response = await axios.get(url, { headers });
+    const cookies = await getValidCookies();
+    const response = await axios.get(url, {
+      headers: { ...headers, Cookie: cookies },
+    });
     const html = response.data;
+
+    // 如果响应内容过短，Cookie 可能失效，刷新重试
+    if (typeof html === 'string' && html.length < 1000) {
+      console.log('[Cookie] 响应内容过短，刷新 Cookie 重试...');
+      cookieJar.clear();
+      cookieExpiry = 0;
+      const retryCookies = await getValidCookies();
+      const retryRes = await axios.get(url, {
+        headers: { ...headers, Cookie: retryCookies },
+      });
+      mergeCookiesFromHeaders(retryRes.headers['set-cookie'] || []);
+      return parseAndCheck(retryRes.data);
+    }
+
+    // 合并新返回的 Cookie
+    mergeCookiesFromHeaders(response.headers['set-cookie'] || []);
+    return parseAndCheck(html);
+  } catch (error) {
+    console.error(`请求失败: ${error.message}`);
+  }
+}
+
+function parseAndCheck(html) {
     const $ = cheerio.load(html);
 
     // 限定在活动主容器内检测，避免扫描其他区域
@@ -184,9 +241,6 @@ async function checkActivity() {
     } else {
       console.log(`[${new Date().toLocaleString()}] 暂未上架，继续监控...`);
     }
-  } catch (error) {
-    console.error(`请求失败: ${error.message}`);
-  }
 }
 
 // 立即执行一次