Initial import of the CBDDC codebase with docs and tests. Add a .NET-focused gitignore to keep generated artifacts out of source control.

tests/ZB.MOM.WW.CBDDC.Hosting.Tests/NoOpServicesTests.cs

@@ -0,0 +1,35 @@
+using ZB.MOM.WW.CBDDC.Hosting.Services;
+
+namespace ZB.MOM.WW.CBDDC.Hosting.Tests;
+
+public class NoOpServicesTests
+{
+    /// <summary>
+    /// Verifies that no-op discovery service lifecycle calls complete and no peers are returned.
+    /// </summary>
+    [Fact]
+    public async Task NoOpDiscoveryService_ReturnsNoPeers_AndCompletesLifecycleCalls()
+    {
+        var service = new NoOpDiscoveryService();
+
+        service.GetActivePeers().ShouldBeEmpty();
+        (await Record.ExceptionAsync(() => service.Start())).ShouldBeNull();
+        (await Record.ExceptionAsync(() => service.Stop())).ShouldBeNull();
+
+        service.Dispose();
+    }
+
+    /// <summary>
+    /// Verifies that no-op sync orchestrator lifecycle calls complete without exceptions.
+    /// </summary>
+    [Fact]
+    public async Task NoOpSyncOrchestrator_CompletesLifecycleCalls()
+    {
+        var orchestrator = new NoOpSyncOrchestrator();
+
+        (await Record.ExceptionAsync(() => orchestrator.Start())).ShouldBeNull();
+        (await Record.ExceptionAsync(() => orchestrator.Stop())).ShouldBeNull();
+
+        orchestrator.Dispose();
+    }
+}