Attach screenshots and/or an APK to a GitHub PR by uploading them to a secret
gist and posting a PR comment with embedded image markdown and download links.
Use when the user asks to post screenshots/APK to a PR, share build artifacts
on a PR, attach a debug APK to a PR for testers, or attach binaries that can't
be committed to the repo. Works around `gh gist create` rejecting binary files
by cloning the gist over git and pushing the binaries.
2026-05-12