refactor(home): align layout input and widget data wiring

Signed-off-by: Adam Kunicki <kunickiaj@gmail.com>

plugins/home-react/src/alpha/blueprints/HomePageLayoutBlueprint.tsx

@@ -51,7 +51,7 @@ export interface HomePageLayoutBlueprintParams {
  */
 export const HomePageLayoutBlueprint = createExtensionBlueprint({
   kind: 'home-page-layout',
-  attachTo: { id: 'page:home', input: 'layouts' },
+  attachTo: { id: 'page:home', input: 'layout' },
   output: [homePageLayoutComponentDataRef],
   dataRefs: {
     component: homePageLayoutComponentDataRef,

plugins/home-react/src/alpha/blueprints/HomePageWidgetBlueprint.tsx

@@ -106,6 +106,7 @@ export const HomePageWidgetBlueprint = createExtensionBlueprint({
     );
 
     yield homePageWidgetDataRef({
+      node,
       component: <Widget {...(params.componentProps ?? {})} />,
       name: params.name,
       title: params.title,

plugins/home-react/src/alpha/dataRefs.ts

@@ -14,7 +14,10 @@
  * limitations under the License.
  */
 
-import { createExtensionDataRef } from '@backstage/frontend-plugin-api';
+import {
+  createExtensionDataRef,
+  type AppNode,
+} from '@backstage/frontend-plugin-api';
 import { JSX, ReactElement } from 'react';
 import type { CardLayout, CardSettings } from '../extensions';
 
@@ -25,6 +28,10 @@ import type { CardLayout, CardSettings } from '../extensions';
  * @alpha
  */
 export interface HomePageWidgetData {
+  /**
+   * The originating app node for this widget.
+   */
+  node: AppNode;
   /**
    * The rendered widget component (typically a card with header, content, etc.)
    */