feat(alarms): EquipmentTagPlan.Alarm parsed byte-parity from TagConfig (Phase B WS-2)

tests/Server/ZB.MOM.WW.OtOpcUa.Runtime.Tests/Drivers/DeploymentArtifactAliasParityTests.cs

@@ -241,6 +241,8 @@ public sealed class DeploymentArtifactAliasParityTests
         };
 
         // The Galaxy equipment tag — FullName is the Galaxy ref "tag_name.AttributeName".
+        // It also carries a native-alarm intent in TagConfig.alarm, so this draft proves the
+        // optional Alarm field is parsed byte-identically on both producers (Phase B WS-2).
         var galaxyTag = new Tag
         {
             TagId = "tag-galaxy",
@@ -250,7 +252,7 @@ public sealed class DeploymentArtifactAliasParityTests
             Name = "DownloadPath",
             DataType = "String",
             AccessLevel = TagAccessLevel.Read,
-            TagConfig = "{\"FullName\":\"DelmiaReceiver_001.DownloadPath\"}",
+            TagConfig = "{\"FullName\":\"DelmiaReceiver_001.DownloadPath\",\"alarm\":{\"alarmType\":\"OffNormalAlarm\",\"severity\":700}}",
         };
         // A non-Galaxy (Modbus) equipment tag — proves the parity holds across drivers, not just Galaxy.
         var modbusTag = new Tag
@@ -315,6 +317,7 @@ public sealed class DeploymentArtifactAliasParityTests
             d.DataType.ShouldBe(x.DataType);
             d.FullName.ShouldBe(x.FullName);
             d.Writable.ShouldBe(x.Writable);
+            d.Alarm.ShouldBe(x.Alarm); // EquipmentTagAlarmInfo is a positional record ⇒ value equality
         }
 
         var galaxyPlan = decoded.EquipmentTags.Single(t => t.TagId == "tag-galaxy");
@@ -323,6 +326,15 @@ public sealed class DeploymentArtifactAliasParityTests
         galaxyPlan.DriverInstanceId.ShouldBe("drv-galaxy");
         galaxyPlan.FolderPath.ShouldBe(string.Empty); // null FolderPath coalesced identically on both sides
 
+        // The native-alarm intent in the Galaxy tag's TagConfig.alarm is parsed byte-identically on both
+        // producers (Phase B WS-2). The Modbus tag has no alarm object ⇒ null Alarm on both sides.
+        galaxyPlan.Alarm.ShouldNotBeNull();
+        galaxyPlan.Alarm!.AlarmType.ShouldBe("OffNormalAlarm");
+        galaxyPlan.Alarm.Severity.ShouldBe(700);
+        composed.EquipmentTags.Single(t => t.TagId == "tag-galaxy").Alarm.ShouldBe(galaxyPlan.Alarm);
+        decoded.EquipmentTags.Single(t => t.TagId == "tag-modbus").Alarm.ShouldBeNull();
+        composed.EquipmentTags.Single(t => t.TagId == "tag-modbus").Alarm.ShouldBeNull();
+
         // Writability flows from Tag.AccessLevel: the Galaxy tag is Read (read-only node), the Modbus
         // tag is ReadWrite (writable node). Both producers must derive the same Writable flag, and the
         // SequenceEqual above already proves they agree element-wise.