Fix BizTalk application ownership mapping

tests/BizTalkPlatformManagementTool.Tests/Program.cs

@@ -40,6 +40,7 @@ namespace BizTalkPlatformManagementTool.Tests
             Run("PlanExecutionSkipsAlreadySatisfiedState", PlanExecutionSkipsAlreadySatisfiedState);
             Run("ExecutionReportRoundTripPreservesFailure", ExecutionReportRoundTripPreservesFailure);
             Run("ScheduledReceivePlanCarriesAdapterMetadata", ScheduledReceivePlanCarriesAdapterMetadata);
+            Run("ApplicationResolverMapsArtifactsAndRejectsAmbiguity", ApplicationResolverMapsArtifactsAndRejectsAmbiguity);
             Run("AdapterAssemblyResolverRequiresMatchingIdentity", AdapterAssemblyResolverRequiresMatchingIdentity);
             Run("OperationLogPersistsCompressesAndRetainsThirtyDays", OperationLogPersistsCompressesAndRetainsThirtyDays);
             Run("OperationLogUsesVerifiedStartupFallback", OperationLogUsesVerifiedStartupFallback);
@@ -208,6 +209,25 @@ namespace BizTalkPlatformManagementTool.Tests
             });
         }
 
+        /// <summary>Prüft die ExplorerOM-basierte Zuordnung aller Laufzeitartefakte und den Ambiguitätsschutz.</summary>
+        private static void ApplicationResolverMapsArtifactsAndRejectsAmbiguity()
+        {
+            var resolver = new BizTalkApplicationResolver();
+            resolver.AddSendPort("APP-A", "SP-A");
+            resolver.AddReceivePort("APP-B", "RP-B");
+            resolver.AddReceiveLocation("APP-B", "RL-B");
+            resolver.AddOrchestration("APP-C", "Company.Process.Order");
+
+            Assert(resolver.ApplicationCount == 3, "application count did not de-duplicate artifact owners");
+            Assert(resolver.ResolveSendPort("sp-a") == "APP-A", "send port was not resolved case-insensitively");
+            Assert(resolver.ResolveReceiveLocation("RL-B", null) == "APP-B", "receive location was not resolved");
+            Assert(resolver.ResolveReceiveLocation("missing", "rp-b") == "APP-B", "receive-port fallback was not used");
+            Assert(resolver.ResolveOrchestration("company.process.order") == "APP-C", "orchestration was not resolved");
+
+            resolver.AddSendPort("APP-D", "SP-A");
+            Assert(resolver.ResolveSendPort("SP-A") == null, "cross-application duplicate was not rejected as ambiguous");
+        }
+
         /// <summary>Prüft Dateinamen- und vollständige Assemblyidentität vor prozesslokalem Laden.</summary>
         private static void AdapterAssemblyResolverRequiresMatchingIdentity()
         {