feat(coding): add Main Data Service Host adapter

electron/api/coding-composition.ts

@@ -31,6 +31,7 @@ import {
   refreshCodingProviderCredential,
 } from './coding-provider-auth';
 import { createCodingProductHost, type CodingProductComposition } from './coding-product-services';
+import { createDataServiceOperations } from '../services/data-service-client';
 import { archivePiConversationSession } from '../coding-runtime/pi/resource-loader';
 import { resolveLegacyProjectModel } from '../coding-projects/legacy-v1';
 
@@ -205,8 +206,10 @@ export function createCodingComposition(
     productTools,
     listPiCommands: (conversationId) => conversations.listLiveCommands(conversationId),
   });
+  const dataService = createDataServiceOperations({ projects });
   return {
     attachments,
+    dataService,
     productTools,
     projects,
     conversations,