test(communication)+test(sitecallaudit): cap parallelism, delta/collection-serialize gauge asserts, replace sleep-then-assert, stop leaked 100ms tickers (arch-review 2026-08-19 P8-5 + P8-6, register rows 40/82/95/96/102 patterns)

tests/ZB.MOM.WW.ScadaBridge.Communication.Tests/PendingDeploymentPurgeActorTests.cs

@@ -87,12 +87,25 @@ public class PendingDeploymentPurgeActorTests : TestKit
         // Fast interval so the self-scheduling timer fires repeatedly; the actor must
         // swallow each per-tick exception and keep ticking (best-effort hygiene — a
         // crash here would drop the singleton until failover).
-        CreateActor(repo, TimeSpan.FromMilliseconds(100));
+        var actor = CreateActor(repo, TimeSpan.FromMilliseconds(100));
 
-        AwaitAssert(
-            () => Assert.True(Volatile.Read(ref calls) >= 2,
-                $"expected >= 2 ticks despite failures, got {Volatile.Read(ref calls)}"),
-            duration: TimeSpan.FromSeconds(5),
-            interval: TimeSpan.FromMilliseconds(50));
+        try
+        {
+            AwaitAssert(
+                () => Assert.True(Volatile.Read(ref calls) >= 2,
+                    $"expected >= 2 ticks despite failures, got {Volatile.Read(ref calls)}"),
+                duration: TimeSpan.FromSeconds(5),
+                interval: TimeSpan.FromMilliseconds(50));
+        }
+        finally
+        {
+            // Row-95/row-82 pattern: a 100ms self-scheduling ticker left running strands
+            // later tests in the same assembly (it keeps firing — and keeps calling the
+            // now-disposed repo/service-provider — for the rest of the process). Stop it
+            // deterministically before the test ends.
+            Watch(actor);
+            Sys.Stop(actor);
+            ExpectTerminated(actor, TimeSpan.FromSeconds(3));
+        }
     }
 }