fix(inbound-api): resolve InboundAPI-014..017 — return-value validation, reflection-gateway hardening, deadline-bound routed calls, RouteHelper test coverage

src/ScadaLink.InboundAPI/CommunicationServiceInstanceRouter.cs

@@ -0,0 +1,31 @@
+using ScadaLink.Commons.Messages.InboundApi;
+using ScadaLink.Communication;
+
+namespace ScadaLink.InboundAPI;
+
+/// <summary>
+/// Default <see cref="IInstanceRouter"/> implementation. Delegates every routed
+/// call to <see cref="CommunicationService"/>, which dispatches to the target
+/// site cluster via the central communication actor.
+/// </summary>
+public sealed class CommunicationServiceInstanceRouter : IInstanceRouter
+{
+    private readonly CommunicationService _communicationService;
+
+    public CommunicationServiceInstanceRouter(CommunicationService communicationService)
+    {
+        _communicationService = communicationService;
+    }
+
+    public Task<RouteToCallResponse> RouteToCallAsync(
+        string siteId, RouteToCallRequest request, CancellationToken cancellationToken) =>
+        _communicationService.RouteToCallAsync(siteId, request, cancellationToken);
+
+    public Task<RouteToGetAttributesResponse> RouteToGetAttributesAsync(
+        string siteId, RouteToGetAttributesRequest request, CancellationToken cancellationToken) =>
+        _communicationService.RouteToGetAttributesAsync(siteId, request, cancellationToken);
+
+    public Task<RouteToSetAttributesResponse> RouteToSetAttributesAsync(
+        string siteId, RouteToSetAttributesRequest request, CancellationToken cancellationToken) =>
+        _communicationService.RouteToSetAttributesAsync(siteId, request, cancellationToken);
+}