Revert "修复实例页长时间后不自动刷新：回前台强制拉数、SSE假连接兜底、快照请求超时防卡死。"

This reverts commit dbf935a570.

lib/common/static/instance_live.js

@@ -1,17 +1,12 @@
 /**
- * embed 壳:SSE 收到后台 tick 后拉 JSON 快照更新 DOM.
- * 同时为 standalone/embed 提供:回前台强制刷新、SSE 假连接兜底.
+ * embed 壳:SSE 收到后台 tick 后拉 JSON 快照更新 DOM,切换 tab 不再重复请求 HTML.
  */
 (function (global) {
   let liveEventSource = null;
   let liveReconnectTimer = null;
   let localLiveVersion = -1;
   let sseConnected = false;
-  let lastLiveEventAt = 0;
   let refreshTimer = null;
-  let pendingWhileHidden = false;
-  /** 超过该毫秒无 live 事件则视为断流,允许 interval 兜底轮询 */
-  const LIVE_STALE_MS = 45000;
 
   function isEmbedShell() {
     return document.body && document.body.getAttribute("data-embed-shell") === "1";
@@ -35,37 +30,20 @@
     if (tab === "options" && global.OptionsPanelLive && typeof global.OptionsPanelLive.refreshSoft === "function") {
       global.OptionsPanelLive.refreshSoft(options);
     }
+    // 数据看板自有 SSE + 快照,不跟 embed live tick 重拉.
   }
 
   function scheduleRefresh(opts) {
-    if (document.hidden) {
-      pendingWhileHidden = true;
-      return;
-    }
     if (refreshTimer) return;
     const options = opts || {};
     refreshTimer = setTimeout(function () {
       refreshTimer = null;
-      if (document.hidden) {
-        pendingWhileHidden = true;
-        return;
-      }
-      pendingWhileHidden = false;
+      if (document.hidden) return;
       refreshTabData(currentTab(), { silent: true, force: !!options.force });
     }, 80);
   }
 
-  function kickRefresh(opts) {
-    pendingWhileHidden = false;
-    if (refreshTimer) {
-      clearTimeout(refreshTimer);
-      refreshTimer = null;
-    }
-    refreshTabData(currentTab(), opts || { silent: true, force: true });
-  }
-
   function onLiveEvent(data) {
-    lastLiveEventAt = Date.now();
     const reason = data && data.reason;
     const ver = Number(data && data.live_version) || 0;
     if (!ver) return;
@@ -81,9 +59,7 @@
 
   function closeLiveStream() {
     if (liveEventSource) {
-      try {
-        liveEventSource.close();
-      } catch (_) {}
+      liveEventSource.close();
       liveEventSource = null;
     }
     if (liveReconnectTimer) {
@@ -104,7 +80,6 @@
     });
     liveEventSource.onopen = function () {
       sseConnected = true;
-      lastLiveEventAt = Date.now();
     };
     liveEventSource.onerror = function () {
       sseConnected = false;
@@ -115,23 +90,7 @@
     };
   }
 
-  function isConnectedFresh() {
-    if (!sseConnected || !liveEventSource) return false;
-    if (!lastLiveEventAt) return false;
-    return Date.now() - lastLiveEventAt < LIVE_STALE_MS;
-  }
-
   function startLive() {
-    document.addEventListener("visibilitychange", function () {
-      if (document.hidden) return;
-      if (isEmbedShell()) {
-        if (!isConnectedFresh()) connectLiveStream();
-      }
-      kickRefresh({ silent: true, force: true });
-    });
-    window.addEventListener("pageshow", function (ev) {
-      if (ev.persisted) kickRefresh({ silent: true, force: true });
-    });
     if (!isEmbedShell()) return;
     connectLiveStream();
   }
@@ -139,8 +98,9 @@
   global.InstanceLive = {
     start: startLive,
     refreshTabData: refreshTabData,
-    kickRefresh: kickRefresh,
-    isConnected: isConnectedFresh,
+    isConnected: function () {
+      return sseConnected;
+    },
   };
 
   if (document.readyState === "loading") {