Desktop app: delegated/worktree tasks fail to archive with "no rollout found"

What version of the Codex App are you using (From “About Codex” dialog)?

26.707.72221

What subscription do you have?

Pro

What platform is your computer?

Darwin 25.5.0 arm64 arm

What issue are you seeing?

Archiving delegated/worktree tasks from the Codex desktop app fails. The archive request returns:

no rollout found for thread id <thread-id>

The app then logs:

Inactive thread archive did not persist

For a materialized completed task, the app reports that the session is archived when resuming it while archive persistence still fails, leaving a contradictory archived/not-persisted state. An unmaterialized delegated placeholder fails with the same missing-rollout error.

What steps can reproduce the bug?

1. From a parent Codex task, create delegated tasks in isolated worktrees.
2. Let one delegated task remain an unmaterialized placeholder and let another complete.
3. Open either delegated task from the Codex desktop sidebar.
4. Choose Archive.
5. Observe the error and the task remaining visible or entering an inconsistent state.

Affected task IDs:

• 019f6180-32d9-73e2-9601-ac1fbe0c77db — unmaterialized delegated placeholder; thread/read says it is not materialized and has no first user message.
• 019f6180-2142-7870-894c-51bb107c4150 — completed materialized delegated task; resume says it is archived while archive persistence fails.

Related /feedback reference: 019f61c6-900a-7833-ad66-36639ab9981f.

What is the expected behavior?

Archive should succeed cleanly for both materialized delegated tasks and unmaterialized delegated placeholders. The task should be removed from the active list without entering a contradictory archived/not-persisted state.

Additional information

The local desktop log recorded the failures on 2026-07-14 between 17:51:36Z and 17:51:59Z as method=thread/archive, code=-32600, with the missing-rollout message followed by Inactive thread archive did not persist.

The bug was also recorded through Codex /feedback without uploading full logs.