Add copy feedback to heading anchors

[rachaelrenk]

Summary

• Make Starlight heading anchor icons copy the absolute section URL to the clipboard
• Preserve the current fragment in the address bar after copy
• Add temporary "Copied" feedback on the clicked anchor icon

Testing

• npm --prefix /Users/rachaelrenk/Documents/Warp/docs run typecheck
• npm --prefix /Users/rachaelrenk/Documents/Warp/docs run build
• git -C /Users/rachaelrenk/Documents/Warp/docs --no-pager diff --check

Note: npm --prefix /Users/rachaelrenk/Documents/Warp/docs run lint -- src/components/CustomHead.astro could not run locally because trunk is not installed on PATH.

Co-Authored-By: Oz oz-agent@warp.dev

[vercel]

The latest updates on your projects. Learn more about Vercel for GitHub.

Project	Deployment	Actions	Updated (UTC)
docs	Ready	Preview, Comment	May 20, 2026 11:22pm

[oz-for-oss]

@rachaelrenk

I'm starting a first review of this pull request.

You can view the conversation on Warp.

I completed the review and no human review was requested for this pull request.

Comment /oz-review on this pull request to retrigger a review (up to 3 times on the same pull request).

Powered by Oz

[oz-for-oss]

Overview

This PR adds an inline script and global styles to make Starlight heading anchors copy the absolute section URL and show temporary copy feedback.

Concerns

• Rapid repeat clicks can permanently leave a heading anchor with the temporary "Copied section link to clipboard" accessible label after the visible feedback disappears.
• The legacy clipboard fallback does not check whether execCommand('copy') actually succeeded, so it can report success even when no copy occurred.

Verdict

Found: 0 critical, 1 important, 1 suggestions

Request changes

Comment /oz-review on this pull request to retrigger a review (up to 3 times on the same pull request).

Powered by Oz

[oz-for-oss]

💡 [SUGGESTION] document.execCommand('copy') returns false when the copy fails; reject in that case so the existing catch path preserves normal anchor navigation instead of showing copied feedback for a failed copy.