Codex desktop freezes on tasks continued from ChatGPT conversations

Description

Codex desktop becomes unresponsive when a task is created by continuing a ChatGPT conversation into Codex. Normal tasks in the same folder work.

Steps to Reproduce

1. Open an existing ChatGPT conversation.
2. Continue the conversation in Codex.
3. Choose the local folder named md-resume.
4. Open or run the generated Codex task.
5. The task hangs and does not produce a response.

Expected Behavior

The imported task should run normally. If the imported conversation is too large or unsupported, Codex should show a clear error instead of freezing.

Actual Behavior

The imported task freezes. In contrast:

• A newly created normal Codex task in the same folder works.
• Codex CLI in the same folder works.
• The problem is isolated to tasks continued from ChatGPT conversations.

Environment

• OS: macOS
• Host: Local
• Affected Codex desktop version: 0.144.2
• Current Codex CLI version used for diagnostics: 0.144.4

Logs

Feedback and diagnostics were uploaded through /feedback.

Uploaded feedback thread ID: 019f64b1-9aa1-7fb0-a98b-5d4a69592454

Affected desktop task IDs:

• 019f647f-92d4-7b22-af3b-705fa2624e81
• 019f6484-7d0c-79f0-be4b-9a8e87e1a394
• 019f649f-2560-7760-8e20-fc5cccb788df

Additional Context

This does not appear to be a hard context-window overflow:

• The approximately 131k displayed tokens were cumulative.
• The last actual request was approximately 51,011 tokens against a 258,400 token context window.
• Another failed task stalled with tokens_used=0, before model execution.

The suspected failure area is the ChatGPT conversation to Codex task conversion, serialization, or task initialization path. The uploaded diagnostics come from a separate CLI session used only to submit this report; the affected desktop task IDs are listed above.