Augment the "Post install" dialog to allow reviewing the script

[bkhouri]

Is your feature request related to a problem? Please describe.
The extension has integration with Swiftly that, if the user decides to install swiftly, will install the Swift toolchain version that are defined in the detected .swift-version file. However, some Swift toolchain installation has a post install script. The extension prompts the user if they script should be executed, but there is no way to review the contents of the script.

Describe the solution you'd like
As a developer, I would like to review the contents of the script that will be executed before granting access.

Describe alternatives you've considered
N/A

Additional context
N/A

[shivansh090]

Hi, I'd like to take a stab at this!
Looking at the open PR #2140 and the feedback from @matthewbastien, I agree that showing the script contents inline in the modal dialog is a cleaner approach: no extra "Review Script" button, no tab switching, no modal blocking issues.

My plan:

Read the script contents and display them directly in the confirmation dialog
Keep the flow simple: user sees the script + "Execute Script" / "Cancel" in one place

Could someone assign this to me? Happy to get it done.

[matthewbastien]

Thank you for your interest in fixing this @shivansh090! I'm assigning this to you if you want to take a stab at fixing it.

[shivansh090]

Thanks for the assignment @matthewbastien! 🙌

Here's my implementation plan:

1. Read the script content before showing the dialog — fetch it from the path provided to the post-install hook
2. Display it inline in the confirmation dialog using a scrollable detail field or a multi-line message, so the user sees the script without any tab-switching or extra clicks
3. Keep the actions simple: "Execute Script" and "Cancel" — no additional "Review Script" button needed
4. Handle edge cases: empty script, unreadable file, very long scripts (truncate with a note)

I'll open a draft PR once I have a working version.