Claude Code can now find a GitHub token from your environment or the gh tool

Claude Code can now look up a GitHub token, the credential that lets it act on GitHub for you. It checks, in order:

• the environment variables GH_TOKEN and GITHUB_TOKEN, or enterprise ones such as GH_ENTERPRISE_TOKEN
• the output of gh auth token, from GitHub's command-line tool

It skips gh when that tool's config folder has no hosts.yml or config.yml, since there is then no login to read.

Checks on git worktrees (extra working copies of a repository) also changed: errors now say which config file included another.