Agents Manager: Restrict zoom action to editor pages (#109908)

* fix: Restrict zoom action to editor pages

The zoom action button was appearing on all pages, but it should only
be available on editor pages (site editor, post/page editor) where
show_component tool messages are meaningful. Also aligns the action id
with the convention used by other message action hooks.

BSKY-1892

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

* Remove unnecessary `as const` assertion in use-sources-action

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

---------

Co-authored-by: Welly Shen <welly.shen@automattic.com>
Co-authored-by: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

Author: 3 people

packages/agents-manager/src/hooks/use-sources-action.ts

@@ -47,7 +47,7 @@ export default function useSourcesAction( registerMessageActions: RegisterMessag
 
 				return [
 					{
-						type: 'component' as const,
+						type: 'component',
 						id: 'sources',
 						label: 'Sources',
 						component: SourcesDisplay,

packages/agents-manager/src/hooks/use-zoom-action.ts

@@ -1,5 +1,6 @@
 import { useEffect } from '@wordpress/element';
 import ZoomActionButton from '../components/zoom-action-button';
+import { isEditorPage } from '../utils/is-editor-page';
 import type { UseAgentChatReturn, UIMessage } from '@automattic/agenttic-client';
 
 type RegisterMessageActions = UseAgentChatReturn[ 'registerMessageActions' ];
@@ -12,7 +13,7 @@ export default function useZoomAction( registerMessageActions: RegisterMessageAc
 		registerMessageActions( {
 			id: 'agents-manager-zoom',
 			actions: ( message: UIMessage ) => {
-				if ( message.role !== 'agent' ) {
+				if ( message.role !== 'agent' || ! isEditorPage() ) {
 					return [];
 				}
 
@@ -30,7 +31,7 @@ export default function useZoomAction( registerMessageActions: RegisterMessageAc
 				return [
 					{
 						type: 'component',
-						id: 'zoom-toggle',
+						id: 'zoom',
 						component: ZoomActionButton,
 						order: 5,
 					},