fix(install script): ensure script works when piped into bash

[irbekrm]

Summary

Fixes the download_cli.sh installation script to work correctly when piped into bash (e.g., curl ... | bash), such as suggested by the Goose CLI install instructions. Previously, the read command would fail because stdin was the script itself rather than the terminal, preventing the script from waiting for user input when asking whether to add the goose bin directory to PATH.

• Adds conditional logic to detect if stdin is a terminal and reads from /dev/tty when it's not

The approach is similar to rustup script

Type of Change

• Feature
• [ x] Bug fix
• Refactor / Code quality
• Performance improvement
• Documentation
• Tests
• Security fix
• Build / Release
• Other (specify below)

AI Assistance

• [ x] This PR was created or reviewed with AI assistance

Testing

I have manually tested that with this change the script succeeds when piped into bash (which was not working previously) as well as still works when ran directly on both Mac and Linux.

Related Issues

Relates to #6295

Screenshots/Demos (for UX changes)

Before:

Details

After:

Details

[Copilot]

Pull request overview

Fixes the download_cli.sh installation script to work correctly when piped into bash (e.g., curl ... | bash). Previously, the read command would fail because stdin was the script itself rather than the terminal, preventing the script from waiting for user input when asking whether to add the goose bin directory to PATH.

• Adds conditional logic to detect if stdin is a terminal and reads from /dev/tty when it's not

[michaelneale]

thanks!