At this point, I need to add to all my AGENTS.md files that yes, we can, and have been able to for 2 months now ^^
https://github.blog/changelog/2026-09-01-github-cli-media-in-issues-pull-requests-and-comments/

The GitHub BlogGitHub CLI: Media in issues, pull requests, and comments - GitHub ChangelogGitHub CLI now has a repeatable --attach flag that uploads a local image or video and references it inline in an issue, pull request, or comment body. This is now…
commit 560a9c4
Would’ve saved me a couple of tokens earlier this morning had I found this sooner. Thanks for sharing!