fix(pr-review): resolve job-token review threads

[Troublor]

Summary

• recognize the GitHub job-token publisher while requiring state markers before adopting generic Actions-authored review threads
• bind inline findings to exact review and comment IDs with bounded API propagation retries
• verify thread-resolution mutations before publishing a clean status, and preserve body-only fallback semantics
• add regression coverage for the PR #230 failure sequence and related recovery paths

Test plan

• PYTHONDONTWRITEBYTECODE=1 python3 -m unittest discover -s .github/actions/claude-pr-review -p "test_*.py" -v
• git diff origin/main...HEAD --check
• Prettier check on .github/actions/README.md
• markdownlint on .github/actions/README.md

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This PR was generated by an automated agent.

[github-actions]

Claude review status

✅ Review clean

Last reviewed: head d7653b52

New this round: 0 · Resolved this round: 0 · Open questions: 0