feat: activate buddy system in open build (#346)

src/utils/attachments.ts

@@ -250,6 +250,7 @@ import { isInProcessTeammate } from './teammateContext.js'
 import { removeTeammateFromTeamFile } from './swarm/teamHelpers.js'
 import { unassignTeammateTasks } from './tasks.js'
 import { getCompanionIntroAttachment } from '../buddy/prompt.js'
+import { isBuddyEnabled } from '../buddy/feature.js'
 
 export const TODO_REMINDER_CONFIG = {
   TURNS_SINCE_WRITE: 10,
@@ -861,10 +862,10 @@ export async function getAttachments(
         ),
       ),
     ),
-    ...(feature('BUDDY')
-      ? [
-          maybe('companion_intro', () =>
-            Promise.resolve(getCompanionIntroAttachment(messages)),
+    ...(isBuddyEnabled()
+        ? [
+            maybe('companion_intro', () =>
+              Promise.resolve(getCompanionIntroAttachment(messages)),
           ),
         ]
       : []),