fix(inbound-api): resolve InboundAPI-002,004,006,008 — disconnect vs timeout, body size limit, active-node gate; surface InboundAPI-007

src/ScadaLink.InboundAPI/ServiceCollectionExtensions.cs

@@ -10,6 +10,10 @@ public static class ServiceCollectionExtensions
         services.AddSingleton<InboundScriptExecutor>();
         services.AddScoped<RouteHelper>();
 
+        // InboundAPI-006 / InboundAPI-008: endpoint filter enforcing the request
+        // body size cap and active-node gating for POST /api/{methodName}.
+        services.AddSingleton<InboundApiEndpointFilter>();
+
         return services;
     }
 }