chore(comm): ctor-inject aggregator reconnect/stability tuning, remove process-global statics (plan R2-02 T12)

tests/ZB.MOM.WW.ScadaBridge.Communication.Tests/Grpc/SiteAlarmAggregatorActorTests.cs

@@ -24,10 +24,12 @@ public class SiteAlarmAggregatorActorTests : TestKit
 
     public SiteAlarmAggregatorActorTests() : base(@"akka.loglevel = WARNING")
     {
-        SiteAlarmAggregatorActor.ReconnectDelay = TimeSpan.FromMilliseconds(50);
-        SiteAlarmAggregatorActor.StabilityWindow = TimeSpan.FromSeconds(30);
     }
 
+    // Former process-global static test seams, now ctor-injected per actor (R2 T12).
+    private static readonly TimeSpan TestReconnectDelay = TimeSpan.FromMilliseconds(50);
+    private static readonly TimeSpan TestStabilityWindow = TimeSpan.FromSeconds(30);
+
     // ── Test doubles ────────────────────────────────────────────────────────────
 
     /// <summary>
@@ -146,7 +148,9 @@ public class SiteAlarmAggregatorActorTests : TestKit
         var props = Props.Create(() => new SiteAlarmAggregatorActor(
             SiteId, "corr-1", seed.Seed, sink.Publish, factory, GrpcNodeA, GrpcNodeB,
             reconcileInterval ?? TimeSpan.FromMinutes(10),
-            publishCoalesce ?? TimeSpan.Zero));
+            publishCoalesce ?? TimeSpan.Zero,
+            TestReconnectDelay,
+            TestStabilityWindow));
 
         var actor = Sys.ActorOf(props);
         return (actor, seed, sink, factory);