[WIP] Add script to configure environments for coding agents

[Copilot]

Thanks for the feedback on #2845. I've created this new PR, which merges into #2845, to address your comment. I will work on the changes and keep this PR's description up to date as I make progress.

Original PR: #2845
Triggering comment (#2845 (comment)):

@copilot please test this PR.

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