保存设置后立即刷新一轮余额

- 修改刷新间隔后原本要等满一个新周期才有第一次查询（设 360 秒就干等 6 分钟），
  现在保存设置即触发一轮 refreshAll
- 间隔未变化时（比如只改低余额阈值）不再重置轮询节拍
- 前端切回总览/中转站视图时后台拉一次最新数据，避免展示整周期前的缓存

Author: lettimepassby

public/app.js

@@ -1135,7 +1135,11 @@ function drawChart(wrap, points, prediction) {
 }
 
 // ---- 事件委托 --------------------------------------------------------------
-document.querySelectorAll(".nav-item").forEach((n) => (n.onclick = () => { state.view = n.dataset.view; render(); }));
+document.querySelectorAll(".nav-item").forEach((n) => (n.onclick = () => {
+  state.view = n.dataset.view;
+  render(); // 先用缓存立即渲染
+  if (isDataView()) reload().catch(() => {}); // 切回数据视图时后台拉一次最新
+}));
 
 $(".main").addEventListener("click", async (e) => {
   if (e.target.closest("#hdrAdd")) return openModal(null);

server.js

@@ -438,6 +438,8 @@ app.put("/api/settings", async (req, res) => {
     patch.lowBalanceUsd = Math.max(0, Number(req.body.lowBalanceUsd) || 0);
   const settings = await store.updateSettings(patch);
   restartPolling();
+  // 立即刷新一轮：重置定时器后第一次触发要等满整个周期，不主动刷会显得设置没生效
+  refreshAll().catch(() => {});
   res.json({ settings });
 });
 
@@ -471,9 +473,12 @@ app.use(express.static(join(__dirname, "public")));
 // ---------------------------------------------------------------------------
 let pollTimer = null;
 let pollRunning = false;
+let pollSec = 0;
 function restartPolling() {
-  if (pollTimer) clearInterval(pollTimer);
   const sec = store.settings.refreshIntervalSec || 60;
+  if (pollTimer && sec === pollSec) return; // 间隔没变（比如只改了阈值）就不重置节拍
+  pollSec = sec;
+  if (pollTimer) clearInterval(pollTimer);
   pollTimer = setInterval(() => {
     if (pollRunning) return; // 上一轮还没结束（慢站点超时可达几十秒）就跳过本轮
     pollRunning = true;