feat(templateengine): validate native alarm source connection + source reference

src/ZB.MOM.WW.ScadaBridge.Commons/Types/Flattening/ValidationResult.cs

@@ -80,5 +80,6 @@ public enum ValidationCategory
     OnTriggerScriptNotFound,
     CrossCallViolation,
     MissingMetadata,
-    ConnectionConfig
+    ConnectionConfig,
+    NativeAlarmSourceInvalid
 }

src/ZB.MOM.WW.ScadaBridge.TemplateEngine/Validation/SemanticValidator.cs

@@ -27,7 +27,8 @@ public class SemanticValidator
     /// <param name="sharedScripts">Shared scripts available for CallShared references.</param>
     public ValidationResult Validate(
         FlattenedConfiguration configuration,
-        IReadOnlyList<ResolvedScript>? sharedScripts = null)
+        IReadOnlyList<ResolvedScript>? sharedScripts = null,
+        IReadOnlySet<string>? alarmCapableConnectionNames = null)
     {
         var errors = new List<ValidationEntry>();
         var warnings = new List<ValidationEntry>();
@@ -215,6 +216,33 @@ public class SemanticValidator
             }
         }
 
+        // Native alarm source bindings: connection + source reference must be
+        // present, and (when the alarm-capable connection set is supplied) the
+        // connection must resolve to an alarm-capable site data connection.
+        foreach (var nativeSource in configuration.NativeAlarmSources)
+        {
+            if (string.IsNullOrWhiteSpace(nativeSource.SourceReference))
+            {
+                errors.Add(ValidationEntry.Error(ValidationCategory.NativeAlarmSourceInvalid,
+                    $"Native alarm source '{nativeSource.CanonicalName}' has an empty source reference.",
+                    nativeSource.CanonicalName));
+            }
+
+            if (string.IsNullOrWhiteSpace(nativeSource.ConnectionName))
+            {
+                errors.Add(ValidationEntry.Error(ValidationCategory.NativeAlarmSourceInvalid,
+                    $"Native alarm source '{nativeSource.CanonicalName}' has no data connection.",
+                    nativeSource.CanonicalName));
+            }
+            else if (alarmCapableConnectionNames is not null &&
+                     !alarmCapableConnectionNames.Contains(nativeSource.ConnectionName))
+            {
+                errors.Add(ValidationEntry.Error(ValidationCategory.NativeAlarmSourceInvalid,
+                    $"Native alarm source '{nativeSource.CanonicalName}' references connection '{nativeSource.ConnectionName}' which is not an alarm-capable data connection on this site.",
+                    nativeSource.CanonicalName));
+            }
+        }
+
         return new ValidationResult { Errors = errors, Warnings = warnings };
     }