git push rejected: GH013 Repository rule violations, Push cannot contain secrets

Don't click 'allow'. The key is still in commit 8f3c2a1; deleting the file in a new commit doesn't remove it from history, and push sends all 4 commits.

Since nothing was pushed yet, rewrite the local commits:

git rm --cached .env          # if it's still tracked
echo .env >> .gitignore
git rebase -i HEAD~5          # mark 8f3c2a1 as 'edit'
# at that stop:
git rm --cached .env
git commit --amend --no-edit
git rebase --continue

Then push. Good news: push protection blocked it, so the key never reached GitHub. If you've never pushed this repo anywhere else, you don't strictly need to rotate the Stripe key. If in doubt, rotate, it's two minutes in the Stripe dashboard.