chore(coderd): introduce TaskAppID and deprecate AITaskSidebarAppID (#20336)

As we're moving away from the SidebarAppID nomenclature, this PR
introduces a new `TaskAppID` field to `codersdk.WorkspaceBuild` and
deprecates the `AITaskSidebarAppID` field. They both contain the same
value.

site/src/api/typesGenerated.ts

@@ -6363,7 +6363,11 @@ export interface WorkspaceBuild {
 	readonly matched_provisioners?: MatchedProvisioners;
 	readonly template_version_preset_id: string | null;
 	readonly has_ai_task?: boolean;
+	/**
+	 * Deprecated: This field has been replaced with `TaskAppID`
+	 */
 	readonly ai_task_sidebar_app_id?: string;
+	readonly task_app_id?: string;
 	readonly has_external_agent?: boolean;
 }
 

site/src/pages/TaskPage/TaskApps.tsx

@@ -34,7 +34,7 @@ export const TaskApps: FC<TaskAppsProps> = ({ task }) => {
 		// The Chat UI app will be displayed in the sidebar, so we don't want to
 		// show it as a web app.
 		(app) =>
-			app.id !== task.workspace.latest_build.ai_task_sidebar_app_id &&
+			app.id !== task.workspace.latest_build.task_app_id &&
 			app.health !== "disabled",
 	);
 	const [embeddedApps, externalApps] = splitEmbeddedAndExternalApps(apps);

site/src/pages/TaskPage/TaskPage.stories.tsx

@@ -190,7 +190,7 @@ export const SidebarAppNotFound: Story = {
 				...workspace,
 				latest_build: {
 					...workspace.latest_build,
-					ai_task_sidebar_app_id: "non-existent-app-id",
+					task_app_id: "non-existent-app-id",
 				},
 			},
 		});
@@ -497,7 +497,7 @@ function mockTaskWorkspace(
 		latest_build: {
 			...MockWorkspace.latest_build,
 			has_ai_task: true,
-			ai_task_sidebar_app_id: sidebarApp.id,
+			task_app_id: sidebarApp.id,
 			resources: [
 				{
 					...MockWorkspaceResource,

site/src/pages/TaskPage/TaskPage.tsx

@@ -143,7 +143,7 @@ const TaskPage = () => {
 		content = <TaskStartingAgent agent={agent} />;
 	} else {
 		const chatApp = getTaskApps(task).find(
-			(app) => app.id === task.workspace.latest_build.ai_task_sidebar_app_id,
+			(app) => app.id === task.workspace.latest_build.task_app_id,
 		);
 		content = (
 			<PanelGroup autoSaveId="task" direction="horizontal">