Plugin install fails on Windows with corrupted error message

Summary:
When running /plugin install codex@openai-codex on Windows with Node.js v20.10.5, the installation fails and outputs corrupted or unreadable error data instead of a normal error message.

Environment:

• OS: Windows
• Node.js version: v20.10.5

Steps to reproduce:

1. Open terminal on Windows.
2. Run /plugin install codex@openai-codex.
3. Observe the installation fails with a binary or corrupted error message (example output provided below).

Expected behavior:
The plugin should install successfully or display a clear, readable error message if it fails.

Actual behavior:
The command fails and outputs binary/corrupted data instead of a human-readable error message.

Example error output:

H�l]�#�U,�;... (binary/unreadable data)

Additional notes:

• User was unable to provide more readable output.
• This issue blocks installation and prevents further setup/use.

Start by reproducing /plugin install codex@openai-codex on Windows with Node.js v20.10.5 and capture the complete failure output. Trace the plugin-install entry point to determine where binary data becomes the displayed error; done means the plugin installs or failures produce readable error messages.