fix: close housekeeping foundation review findings

src/features/housekeeping/foundation/contracts/domain.ts

@@ -1,5 +1,8 @@
 import type { HousekeepingDomainId } from "../../migration/types";
 import type { CapabilityRequirement } from "./capability";
+import type { HousekeepingInboxSource } from "./inbox";
+import type { HousekeepingSearchProvider } from "./search";
+import type { HousekeepingWidgetDefinition } from "./widget";
 
 export interface HousekeepingRouteDefinition {
 	id: string;
@@ -17,4 +20,7 @@ export interface HousekeepingDomainManifest {
 	previewHref: `/admin-next/${HousekeepingDomainId}`;
 	capability: CapabilityRequirement;
 	routes: readonly HousekeepingRouteDefinition[];
+	searchProviders: readonly HousekeepingSearchProvider[];
+	inboxSources: readonly HousekeepingInboxSource[];
+	widgets: readonly HousekeepingWidgetDefinition[];
 }