feat: add native module realtime transport

apps/api/tests/module-ui-routes.test.ts

@@ -16,6 +16,7 @@ import {
   createModuleUiPublicationRegistry,
   type DiscoveredModule,
   discoverModules,
+  EMPTY_MODULE_REALTIME_REGISTRY,
 } from "@ekklesia/core/modules";
 import { loadModuleUi } from "@ekklesia/module-ui-host";
 import type { Hono } from "hono";
@@ -173,6 +174,7 @@ async function install(fixtures: readonly ModuleFixture[]): Promise<Installation
   const app = createApiApp({
     authorization: { evaluator, registry: CORE_PERMISSION_REGISTRY, store },
     moduleRoutes: Object.freeze([]),
+    moduleRealtime: EMPTY_MODULE_REALTIME_REGISTRY,
     moduleServices: services,
     moduleUi: createModuleUiPublicationRegistry(modules),
     moduleLifecycle: {
@@ -708,6 +710,7 @@ describe("module UI artifact publication — the generic loader consumes what is
       moduleId: "announcements",
       permissions: { has: () => false },
       principal: { kind: "anonymous" as const },
+      realtime: { subscribe: () => ({ close: () => undefined }) },
     };
   }