fix(centralui)+test(centralui): Low-wave integration — T12 Topology race fixture gains T13's IStaleInstanceProbe dependency; T11 sandbox-run continuation skips StateHasChanged after Dispose

Cross-task regression caught by the combined sweep: TopologyLiveUpdatesTimerDisposeRaceTests
(T12) builds a real DeploymentService, whose constructor grew an IStaleInstanceProbe
parameter in T13 (P7-6 up-to-date pre-filter) — 4 DI-resolution failures on the
integration branch that neither task saw in isolation. Registered a substitute, matching
TopologyPageTests.

Bundle review Minor: ApiMethodForm/SharedScriptForm copied TemplateScriptDialog's sandbox
pattern exactly, whose finally re-renders unconditionally; the plan asked the continuation
to be guarded on disposal, so a _disposed flag now suppresses the post-cancel
StateHasChanged (the reference dialog keeps its original shape — out of T11's scope).

src/ZB.MOM.WW.ScadaBridge.CentralUI/Components/Pages/Design/ApiMethodForm.razor

@@ -232,6 +232,7 @@
     private Dictionary<string, object?> _paramValues = new();
     private ScriptAnalysis.SandboxRunResult? _runResult;
     private CancellationTokenSource? _runCts;
+    private bool _disposed;
 
     protected override async Task OnInitializedAsync()
     {
@@ -381,6 +382,7 @@
     /// <summary>Cancels an in-flight Test Run when the component is torn down.</summary>
     public void Dispose()
     {
+        _disposed = true;
         _runCts?.Cancel();
         _runCts?.Dispose();
         _runCts = null;
@@ -422,7 +424,8 @@
         finally
         {
             _running = false;
-            StateHasChanged();
+            // The run may have been cancelled BY Dispose — the component is gone, don't re-render it.
+            if (!_disposed) StateHasChanged();
         }
     }
 

src/ZB.MOM.WW.ScadaBridge.CentralUI/Components/Pages/Design/SharedScriptForm.razor

@@ -202,6 +202,7 @@
     private Dictionary<string, object?> _paramValues = new();
     private ScriptAnalysis.SandboxRunResult? _runResult;
     private CancellationTokenSource? _runCts;
+    private bool _disposed;
 
     // CentralUI-024: delegates to the shared helper so the claim type stays
     // resolved through JwtTokenService rather than a duplicated magic string.
@@ -245,6 +246,7 @@
     /// <summary>Cancels an in-flight Test Run when the component is torn down.</summary>
     public void Dispose()
     {
+        _disposed = true;
         _runCts?.Cancel();
         _runCts?.Dispose();
         _runCts = null;
@@ -344,7 +346,8 @@
         finally
         {
             _running = false;
-            StateHasChanged();
+            // The run may have been cancelled BY Dispose — the component is gone, don't re-render it.
+            if (!_disposed) StateHasChanged();
         }
     }
 

tests/ZB.MOM.WW.ScadaBridge.CentralUI.Tests/TopologyLiveUpdatesTimerDisposeRaceTests.cs

@@ -56,6 +56,8 @@ public class TopologyLiveUpdatesTimerDisposeRaceTests : BunitContext
         Services.AddSingleton(_siteRepo);
         Services.AddSingleton(_deployRepo);
         Services.AddSingleton(Substitute.For<ZB.MOM.WW.ScadaBridge.DeploymentManager.IFlatteningPipeline>());
+        // DeploymentService takes IStaleInstanceProbe since the Low-wave P7-6 pre-filter (T13).
+        Services.AddSingleton(Substitute.For<ZB.MOM.WW.ScadaBridge.Commons.Interfaces.Transport.IStaleInstanceProbe>());
         Services.AddSingleton(_audit);
 
         var comms = new CommunicationService(