TripSense 行知 · 周边出行顾问：首版

零依赖 Node 服务，三步流程（选出发地 → 分析候选 → 生成方案 + 路线图 + 住宿参考）。 - 候选发现：高德 place/text 类型词跨城检索 + 内置景区/城市/小众库 + Photon 兜底 - 区县级「排除同城」判定（adname），过滤发生在轮转取样之前 - 路线图画的是 AI 方案里实际安排的每个地点，按正文顺序编号 + 虚线动线 + 真实高德底图 - 住宿：RollingGo 只读 CLI 取实时报价，无价格源时如实标注不编造 - 服务端内存缓存（指纹 + TTL + LRU），数据源层与 HTTP 层分别缓存 - 上下文瘦身：逐日天气只给 rank1，紧凑 JSON，实测约 1335 token
2026-11-05 20:25:03 +08:00
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+'use strict';
+/* 缓存命中验证：连续两次「分析周边目的地」，第二次应秒回并出现缓存提示条 */
+const fs = require('fs');
+const path = require('path');
+
+const OUT = path.join(__dirname, '..', 'preview');
+const BASE = process.env.BASE || 'http://127.0.0.1:8788';
+const AMAP = process.env.AMAP_KEY || '';
+const sleep = (ms) => new Promise((r) => setTimeout(r, ms));
+
+class CDP {
+  constructor(ws) { this.ws = ws; this.id = 0; this.waits = new Map(); }
+  static async connect(url) {
+    const ws = new WebSocket(url);
+    await new Promise((res, rej) => { ws.onopen = res; ws.onerror = rej; });
+    const c = new CDP(ws);
+    ws.onmessage = (e) => {
+      const m = JSON.parse(e.data);
+      if (m.id && c.waits.has(m.id)) { c.waits.get(m.id)(m); c.waits.delete(m.id); }
+    };
+    return c;
+  }
+  send(method, params = {}, sessionId) {
+    const id = ++this.id;
+    return new Promise((res) => { this.waits.set(id, res); this.ws.send(JSON.stringify({ id, method, params, sessionId })); });
+  }
+}
+
+(async () => {
+  const { webSocketDebuggerUrl } = await (await fetch('http://127.0.0.1:9333/json/version')).json();
+  const browser = await CDP.connect(webSocketDebuggerUrl);
+  const { result: { targetId } } = await browser.send('Target.createTarget', { url: 'about:blank' });
+  const { result: { sessionId } } = await browser.send('Target.attachToTarget', { targetId, flatten: true });
+  const S = (m, p) => browser.send(m, p, sessionId);
+  await S('Page.enable'); await S('Runtime.enable');
+  await S('Emulation.setDeviceMetricsOverride', { width: 1360, height: 1400, deviceScaleFactor: 1, mobile: false });
+
+  const evalJs = async (expr) => {
+    const r = await S('Runtime.evaluate', { expression: expr, awaitPromise: true, returnByValue: true });
+    if (r.result?.exceptionDetails) throw new Error(JSON.stringify(r.result.exceptionDetails).slice(0, 400));
+    return r.result?.result?.value;
+  };
+
+  await S('Page.navigate', { url: BASE });
+  await sleep(2500);
+  if (AMAP) {
+    await evalJs(`(() => {
+      const raw = JSON.parse(localStorage.getItem('tripsense.ai') || '{}');
+      raw.amapKey = ${JSON.stringify(AMAP)};
+      localStorage.setItem('tripsense.ai', JSON.stringify(raw));
+      return true;
+    })()`);
+    await S('Page.reload');
+    await sleep(2500);
+  }
+
+  await evalJs(`(() => { const el = document.querySelector('#originInput'); el.value = '柳州'; el.dispatchEvent(new Event('input', { bubbles: true })); return true; })()`);
+  for (let i = 0; i < 20; i++) {
+    await sleep(1000);
+    const ok = await evalJs(`(() => { const it = document.querySelector('#suggestBox .suggest-item'); if (it && !document.querySelector('#suggestBox').classList.contains('hidden')) { it.click(); return true; } return false; })()`);
+    if (ok) break;
+  }
+  console.log('origin =', await evalJs(`document.querySelector('#originInput')?.value`));
+
+  const runAnalyze = async (label) => {
+    const t0 = Date.now();
+    await evalJs(`(() => { const cards = document.querySelectorAll('.dest-card'); cards.forEach(c => c.remove()); const b = document.querySelector('#analyzeBtn'); if (b) b.click(); return true; })()`);
+    let n = 0;
+    for (let i = 0; i < 40; i++) {
+      await sleep(500);
+      n = await evalJs(`document.querySelectorAll('.dest-card').length`);
+      if (n) break;
+    }
+    const ms = Date.now() - t0;
+    console.log(`\n[${label}] candidates=${n} elapsed=${ms}ms`);
+    console.log('  progress =', JSON.stringify(await evalJs(`(document.querySelector('#progress')?.innerText||'').slice(0,200)`)));
+    console.log('  cacheBar hidden =', await evalJs(`document.querySelector('#cacheBar')?.classList.contains('hidden')`));
+    console.log('  cacheBar text =', JSON.stringify(await evalJs(`(document.querySelector('#cacheBar')?.innerText||'').slice(0,300)`)));
+    return ms;
+  };
+
+  const cold = await runAnalyze('第一次（冷）');
+  await sleep(1500);
+  const warm = await runAnalyze('第二次（应命中缓存）');
+
+  // 点「重新获取最新数据」
+  await evalJs(`document.querySelector('#cacheBar button, #cacheBar .link-btn')?.click()`);
+  for (let i = 0; i < 60; i++) {
+    await sleep(500);
+    const hit = await evalJs(`document.querySelector('#cacheBar')?.classList.contains('hidden')`);
+    if (hit) break;
+  }
+  console.log('\n=== 强制刷新后 ===');
+  console.log('  cacheBar hidden =', await evalJs(`document.querySelector('#cacheBar')?.classList.contains('hidden')`));
+  console.log('  cacheBar text =', JSON.stringify(await evalJs(`(document.querySelector('#cacheBar')?.innerText||'').slice(0,200)`)));
+  console.log('  progress =', JSON.stringify(await evalJs(`(document.querySelector('#progress')?.innerText||'').slice(0,120)`)));
+  console.log('  candidates =', await evalJs(`document.querySelectorAll('.dest-card').length`));
+
+  // 服务端缓存统计
+  const health = await (await fetch(BASE + '/api/health')).json();
+  console.log('\nserver cache =', JSON.stringify(health.cache));
+
+  const shot = await S('Page.captureScreenshot', { format: 'png' });
+  if (shot.result?.data) fs.writeFileSync(path.join(OUT, 'preview-cache.png'), Buffer.from(shot.result.data, 'base64'));
+  console.log('screenshot -> preview/preview-cache.png');
+  browser.ws.close();
+  process.exit(0);
+})().catch((e) => { console.error('FAIL', e.message); process.exit(1); });