[Windows] Clicking a generated image shows "hs.setProgressBar is not a function"

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

26.820.9563.0

What subscription do you have?

gpt go

What platform is your computer?

OS: Windows Codex desktop app version: 26.820.9563.0 Installation: Microsoft Store / Windows packaged app Model: [luna] Reproducible: Every time when clicking the generated image

What issue are you seeing?

A JavaScript error occurred in the main process

Uncaught Exception:
TypeError: hs.setProgressBar is not a function
    at DownloadItem.<anonymous> (...)
    at DownloadItem.emit (node:events:508:28)

<img width="694" height="229" alt="Image" src="https://github.com/user-attachments/assets/c3c66eb8-6864-417a-975f-127c1156ef37" />

### What steps can reproduce the bug?

1. Open the Codex desktop app on Windows. 2. Generate an image in a chat. 3. Click the generated image or its download action. 4. An error dialog appears. 

### What is the expected behavior?

The image should open or download normally.

### Additional information

The image generation itself succeeds. The error occurs only when trying to open or download the generated image.
Screenshot attached.

Reproduce on the Windows packaged app by generating an image and clicking it or its download action. Trace the main-process DownloadItem handler shown in the stack trace and the hs.setProgressBar call; done means the image opens or downloads normally without the error dialog.