fix(workbench): keep timing ticker active in background pages (#1985)

Co-authored-by: root <root@lyon.remote>

web/hwlab-cloud-web/src/composables/useWorkbenchNowTicker.ts

@@ -35,7 +35,10 @@ function refreshNow(): void {
 }
 
 function reconcileTimer(): void {
-  const shouldRun = isBrowser() && isDocumentVisible() && hasActiveSubscriber();
+  // Passive observer pages may be backgrounded while still being the source of
+  // web-probe samples. Keep the render ticker alive for active subscribers so
+  // elapsed/recent labels advance monotonically instead of jumping on resume.
+  const shouldRun = isBrowser() && hasActiveSubscriber();
   if (shouldRun && timer === null) {
     refreshNow();
     timer = window.setInterval(refreshNow, TICK_INTERVAL_MS);
@@ -74,7 +77,3 @@ function handleVisibilityChange(): void {
 function isBrowser(): boolean {
   return typeof window !== "undefined";
 }
-
-function isDocumentVisible(): boolean {
-  return typeof document === "undefined" || document.visibilityState !== "hidden";
-}