move to alpha

Signed-off-by: aramissennyeydd <aramis.sennyey@doordash.com>

packages/backend/src/index.ts

@@ -15,6 +15,7 @@
  */
 
 import { createBackend } from '@backstage/backend-defaults';
+import { rootSystemMetadataServiceFactory } from '@backstage/backend-defaults/alpha';
 import {
   coreServices,
   createBackendFeatureLoader,
@@ -70,6 +71,7 @@ backend.add(import('@backstage/plugin-techdocs-backend'));
 backend.add(import('@backstage/plugin-signals-backend'));
 backend.add(import('@backstage/plugin-notifications-backend'));
 backend.add(import('./systemMetadataPlugin'));
+backend.add(rootSystemMetadataServiceFactory);
 
 backend.add(import('@backstage/plugin-events-backend-module-google-pubsub'));
 backend.add(import('@backstage/plugin-mcp-actions-backend'));

packages/backend/src/systemMetadataPlugin.ts

@@ -18,6 +18,7 @@ import {
   coreServices,
   createBackendPlugin,
 } from '@backstage/backend-plugin-api';
+import { rootSystemMetadataServiceRef } from '@backstage/backend-plugin-api/alpha';
 import Router from 'express-promise-router';
 
 /**
@@ -29,7 +30,7 @@ export default createBackendPlugin({
   register: reg => {
     reg.registerInit({
       deps: {
-        systemMetadata: coreServices.rootSystemMetadata,
+        systemMetadata: rootSystemMetadataServiceRef,
         rootHttpRouter: coreServices.rootHttpRouter,
       },
       async init({ systemMetadata, rootHttpRouter }) {