Docker Engine 29.0.0 was released 2025-11-10 per docs.docker.com release
notes, not 2025-11-11 (off by one day). Also bring docker/login-action
reference in 18.6 up to v4 to match the 21.2 example (v4 has been current
since 2026-03-04).
- Enforce Level 1-3 structural numbering based on SUMMARY.md hierarchy
- Remove structural numbering from Level 4+ headings
- Eliminate single child headings by converting to bold text
- Auto-inject summary text for headings with multiple children missing intro text
- Exclude Appendix chapters from structural numbering
- Avoid modifying code block contents
- Add script to detect non-standard English usage in headers
yeasy