GitHub CI co-pilot for DeepSeek Harness

Key features

• gh_review_prPull a PR with its changed files, unified diff, existing reviews and CI status — the agent then writes the review.
• cordis.patch.yml — the bundle layer that mounts the plugin row.
• gh_submit_reviewApprove, request changes, comment — with optional inline comments anchored to the diff.
• gh_fix_ciInspect failing checks/annotations/log tails for a commit, branch or workflow run.
• gh_triage_issuesList issues with triage signals: age, staleness, comments, labels.