v1.6.0
De-bloat: dedupe SKILL.md under 500 lines, merge the three build references into MANAGING-YOUR-AI.md, trim the description under the 1024-char limit, fix portability
De-bloat: dedupe SKILL.md under 500 lines, merge the three build references into MANAGING-YOUR-AI.md, trim the description under the 1024-char limit, fix portability