fix(triggers): seed the trigger-expression attribute snapshot at actor startup

src/ScadaLink.SiteRuntime/Actors/AlarmActor.cs

@@ -72,6 +72,7 @@ public class AlarmActor : ReceiveActor
         SiteRuntimeOptions options,
         ILogger logger,
         Script<object?>? compiledTriggerExpression = null,
+        IReadOnlyDictionary<string, object?>? initialAttributes = null,
         ISiteHealthCollector? healthCollector = null)
     {
         _alarmName = alarmName;
@@ -86,6 +87,15 @@ public class AlarmActor : ReceiveActor
         _onTriggerCompiledScript = onTriggerCompiledScript;
         _compiledTriggerExpression = compiledTriggerExpression;
 
+        // Seed the trigger-expression attribute snapshot from the instance's
+        // initial attribute set so static attributes (which never re-emit an
+        // AttributeValueChanged after deploy) evaluate correctly at startup.
+        if (initialAttributes != null)
+        {
+            foreach (var kvp in initialAttributes)
+                _attributeSnapshot[kvp.Key] = kvp.Value;
+        }
+
         // Parse trigger type
         _triggerType = Enum.TryParse<AlarmTriggerType>(alarmConfig.TriggerType, true, out var tt)
             ? tt : AlarmTriggerType.ValueMatch;