Target: every skill's description fits in a one-line gateway menu and
leads with trigger keywords an agent would match on. Drops filler like
'Use this skill to', 'A skill for', 'This skill provides'.
Before: max description length was 791 chars (architecture-diagram),
74 of 81 built-in skills were >60 chars.
After: max 60, mean 54, all 81 built-in skills <=60.
Rewritten with double-quoted YAML scalars to preserve Chinese/arrow
glyphs (baoyu-comic, yuanbao, youtube-content).
PR #4654 replaced ml-paper-writing with research-paper-writing, preserving
the writing philosophy and reference files but dropping the dedicated
'Sources Behind This Guidance' attribution table from the SKILL.md body.
Re-adds:
- The researcher attribution table (Nanda, Farquhar, Gopen & Swan, Lipton,
Steinhardt, Perez, Karpathy) with affiliations and links to SKILL.md
- Orchestra Research credit as original compiler of the writing philosophy
- 'Origin & Attribution' section in sources.md documenting the full chain:
Nanda blog → Orchestra skill → teknium integration → SHL0MS expansion
