fix(centralui): pending-updates rail refreshes as soon as a deployment finishes — cache drops its snapshot on Success/Failed and signals the indicator, instead of serving the pre-deploy count for up to TTL + one poll

src/ZB.MOM.WW.ScadaBridge.CentralUI/Components/Layout/PendingUpdatesIndicator.razor

@@ -140,6 +140,23 @@
         // the same circuit) must move this block, not leave it showing what the
         // previous principal was allowed to see.
         AuthStateProvider.AuthenticationStateChanged += OnAuthenticationStateChanged;
+        PendingUpdates.Invalidated += OnPendingUpdatesInvalidated;
+    }
+
+    // Set when the cache reports a finished deployment. A reload that arrives while a poll is
+    // already running is dropped by the PollGate, so the running poll re-checks this flag and
+    // goes round once more — otherwise the post-deploy count could wait out a full interval.
+    private int _reloadRequested;
+
+    private void OnPendingUpdatesInvalidated()
+    {
+        if (_disposed || !_visible)
+        {
+            return;
+        }
+
+        Interlocked.Exchange(ref _reloadRequested, 1);
+        _ = RunLoadAsync();
     }
 
     protected override async Task OnParametersSetAsync()
@@ -267,9 +284,20 @@
     /// </summary>
     internal Task PollOnceAsync() => RunLoadAsync();
 
-    private Task RunLoadAsync() => _pollGate.RunAsync(
-        LoadAsync,
-        error => Logger.LogDebug(error, "Pending-updates indicator poll tick failed."));
+    private async Task RunLoadAsync()
+    {
+        await _pollGate.RunAsync(
+            LoadAsync,
+            error => Logger.LogDebug(error, "Pending-updates indicator poll tick failed."));
+
+        // A reload requested while that poll was running was dropped by the gate: run once more.
+        if (!_disposed && Interlocked.Exchange(ref _reloadRequested, 0) == 1)
+        {
+            await _pollGate.RunAsync(
+                LoadAsync,
+                error => Logger.LogDebug(error, "Pending-updates indicator reload failed."));
+        }
+    }
 
     private async Task LoadAsync()
     {
@@ -342,6 +370,7 @@
     {
         _disposed = true;
         AuthStateProvider.AuthenticationStateChanged -= OnAuthenticationStateChanged;
+        PendingUpdates.Invalidated -= OnPendingUpdatesInvalidated;
 
         lock (_timerLock)
         {