Rename book to Harness Engineering Playbook

[fqzz2000]

Summary

• EN: Harness Engineering Playbook: Reliable Software Delivery at 100x
• ZH: Harness Engineering 手册：百倍生产力的可靠软件交付
• Updated book.json, both README.md and SUMMARY.md files

🤖 Generated with Claude Code

[lipingtababa]

Review: Rename book to Harness Engineering Playbook

Clean, focused rename across all the right files (book.json, both README.md, both SUMMARY.md). A few observations:

Consistency note

The en/README.md and zh/README.md still reference "AgentZones Community" / "AgentZones 社区" in the editor credit line. If the rebrand is intentional and complete, those references may need updating too — or they may be deliberately kept if AgentZones remains the community name. Worth a quick decision either way.

Content change beyond rename

The EN and ZH README.md files lost their subtitle lines ("How to organize AI and humans for reliable software delivery" / "如何组织 AI 与人类完成可靠的软件交付"). The subtitle provided useful context for new readers arriving at the intro page. Consider whether that context should be preserved elsewhere, perhaps as the opening paragraph or as a subtitle under the new heading.

SUMMARY.md entry wording

The EN SUMMARY.md entry changed from a descriptive title ("Introduction: High-Quality Delivery at 100x Productivity") to just the book name ("Harness Engineering Playbook"). The ZH side mirrors this. Since this is the TOC entry for the intro page, a slightly more descriptive label (e.g., "Introduction" or keeping a short descriptor) might help readers navigate, but this is a minor stylistic preference.

Overall: small, well-scoped change. The points above are informational only.