feat(alarms): carry AlarmTypeName + operator Comment on AlarmTransitionEvent (historian feed prep)

src/Core/ZB.MOM.WW.OtOpcUa.Commons/Messages/Alerts/AlarmTransitionEvent.cs

@@ -14,6 +14,8 @@ namespace ZB.MOM.WW.OtOpcUa.Commons.Messages.Alerts;
 /// <param name="Message">Fully-rendered message text — template tokens already resolved.</param>
 /// <param name="User">Operator who triggered the transition. "system" for engine-driven events.</param>
 /// <param name="TimestampUtc">When the transition occurred.</param>
+/// <param name="AlarmTypeName">OPC UA Part 9 condition subtype name — one of <c>LimitAlarm</c> / <c>DiscreteAlarm</c> / <c>OffNormalAlarm</c> / <c>AlarmCondition</c> (the base type, used as the default). The historian feed maps this onto the durable alarm-type column.</param>
+/// <param name="Comment">Operator-supplied comment on ack / confirm / comment transitions; <c>null</c> for engine-driven transitions (Activated / Cleared / Shelved / …) that carry no comment.</param>
 public sealed record AlarmTransitionEvent(
     string AlarmId,
     string EquipmentPath,
@@ -22,4 +24,6 @@ public sealed record AlarmTransitionEvent(
     int Severity,
     string Message,
     string User,
-    DateTime TimestampUtc);
+    DateTime TimestampUtc,
+    string AlarmTypeName = "AlarmCondition",
+    string? Comment = null);