Unable to complete a chat

### What happened?

[ACTION REQUIRED] 📎 PLEASE ATTACH THE EXPORTED CHAT HISTORY JSON FILE TO THIS ISSUE IF YOU FEEL COMFORTABLE SHARING IT.

### What did you expect to happen?

Chat to complete in re: to codebase

### Client information

* **CLI Version:** 0.50.0
* **Git Commit:** 8d9733d53
* **Session ID:** 7be4530e-0924-4cba-a96a-6dc3653d0d47
* **Operating System:** darwin v24.16.0
* **Sandbox Environment:** no sandbox
* **Model Version:** auto
* **Auth Type:** oauth-personal
* **Memory Usage:** 2.38 GB
* **Terminal Name:** iTerm2 3.6.11
* **Terminal Background:** #15191e
* **Kitty Keyboard Protocol:** Supported

### Login information

_No response_

### Anything else we need to know?

_No response_

Start by reproducing the incomplete chat with CLI version 0.50.0 on the reported darwin environment. If available, inspect the exported chat history JSON and use the session details in this report to trace where the codebase chat stops; done means the chat completes successfully.

Written by the indexing model from the issue text.