GitHub Bookmarked Issues от Richard Michael

GitHub Bookmarked Issues adds a Bookmarks view to github.com/issues, right
alongside GitHub's built-in views like "Created" and "Assigned." Bookmark any
issue from its page and find it later in one place.

Features:

• Bookmark button on every GitHub issue page
• Bookmarks view at github.com/issues, integrated with GitHub's native UI
• Cross-device sync via your browser's built-in sync (Google Account or
  Firefox Account)
• Quick access popup showing all bookmarked issues
• Copy bookmarked issues as Markdown links
• Import issues from GitHub URLs
• Works without authentication; optional GitHub Personal Access Token for
  higher API rate limits

Permissions explained:

• Storage: saves your bookmarks and preferences
• Web Request: discovers GitHub API parameters for compatibility
• Host permissions (github.com, api.github.com): adds bookmark buttons to
  issue pages and fetches issue details from GitHub's API

No data is sent to any server other than GitHub's API. No analytics or
tracking. Fully open source.