Add react-doctor for React lint/a11y/perf/architecture diagnostics:
- Add react-doctor devDependency and "doctor" npm script
- Add .claude/skills/react-doctor skill for local triage workflow
- Add GitHub Actions workflow to scan PRs and track health score
- Replace flat pr-description.md / release-notes.md with per-skill folders
- Add new branch-name and translate skills
- Update release-notes skill to match the GitHub Releases format (v1.2.0)
* chore: add Claude Code skills for PR descriptions and release notes
* chore(skills): update release-notes branches to canary->master and example version to v1.3.0
* chore(skills): address PR review comments
- pr-description: infer base branch from PR metadata, fix Improvement wording, reference template's screenshot placeholder verbatim
- release-notes: add `text` language to unlabeled fenced code block