fix(background-agent): defer retry notifications

src/hooks/background-notification/hook.ts

@@ -28,12 +28,6 @@ const FORWARDED_EVENT_TYPES = new Set([
   "session.status",
 ])
 
-/**
- * Background notification hook - handles event routing to BackgroundManager.
- *
- * Notifications are now delivered directly via session.prompt({ noReply })
- * from the manager, so this hook only needs to handle event routing.
- */
 export function createBackgroundNotificationHook(manager: BackgroundManager) {
   const eventHandler = async ({ event }: EventInput) => {
     if (!FORWARDED_EVENT_TYPES.has(event.type)) return