Resolve all 46 low-severity architecture review findings

src/ZB.MOM.WW.ScadaBridge.SiteRuntime/Actors/AlarmActor.cs

@@ -279,6 +279,9 @@ public class AlarmActor : ReceiveActor
     /// </summary>
     private void HandleAttributeValueChanged(AttributeValueChanged changed)
     {
+        // Alarm audit rows have no inferred-edge metadata: never assert that an armed
+        // device publish was caused by the candidate writer. Observed static writes retain it.
+        var observedSource = changed.SourceExecutionInferred ? null : changed.SourceExecutionId;
         // Expression triggers evaluate against a snapshot of every attribute,
         // not a single monitored attribute. Keep the snapshot current for every
         // change before the IsMonitoredAttribute gate (which does not apply).
@@ -288,7 +291,7 @@ public class AlarmActor : ReceiveActor
             // (ParentExecutionId tag-cascade): remember which
             // execution (if any) wrote the newest value folded into the snapshot,
             // so the off-dispatcher evaluation can attribute its raise to it.
-            _latestSourceExecutionId = changed.SourceExecutionId;
+            _latestSourceExecutionId = observedSource;
         }
         else if (!IsMonitoredAttribute(changed.AttributeName))
         {
@@ -300,7 +303,7 @@ public class AlarmActor : ReceiveActor
         {
             if (_triggerType == AlarmTriggerType.HiLo)
             {
-                HandleHiLoTransition(EvaluateHiLo(changed.Value), changed.SourceExecutionId);
+                HandleHiLoTransition(EvaluateHiLo(changed.Value), observedSource);
                 return;
             }
 
@@ -322,7 +325,7 @@ public class AlarmActor : ReceiveActor
                 _ => false
             };
 
-            ApplyTriggeredState(isTriggered, changed.SourceExecutionId);
+            ApplyTriggeredState(isTriggered, observedSource);
         }
         catch (Exception ex)
         {