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

tools/dump-body.cjs

@@ -0,0 +1,82 @@
+'use strict';
+/* 对比两次 analyze 请求体，定位缓存指纹不稳定的原因 */
+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');
+  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);
+  }
+  // 拦截 fetch，记录 /api/analyze 的请求体
+  await evalJs(`(() => {
+    window.__bodies = [];
+    const of = window.fetch;
+    window.fetch = async function (u, o) {
+      if (String(u).includes('/api/analyze') && o && o.body) window.__bodies.push(o.body);
+      return of.apply(this, arguments);
+    };
+    return true;
+  })()`);
+
+  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;
+  }
+
+  for (let i = 1; i <= 2; i++) {
+    await evalJs(`(() => { const b = document.querySelector('#analyzeBtn'); if (b) b.click(); return true; })()`);
+    for (let k = 0; k < 40; k++) {
+      await sleep(500);
+      const n = await evalJs(`document.querySelectorAll('.dest-card').length`);
+      if (n) break;
+    }
+    await sleep(1500);
+    console.log(`run ${i} done, cards =`, await evalJs(`document.querySelectorAll('.dest-card').length`));
+  }
+
+  const bodies = await evalJs(`window.__bodies`);
+  console.log('\n=== captured analyze bodies ===');
+  (bodies || []).forEach((b, i) => console.log(`[${i}]`, b));
+  if ((bodies || []).length >= 2) {
+    console.log('\nidentical =', bodies[0] === bodies[1]);
+  }
+  browser.ws.close();
+  process.exit(0);
+})().catch((e) => { console.error('FAIL', e.message); process.exit(1); });