chore: reduce SKILL.md from 2,850 to ~500 words

[CybotTM]

Quality Review Finding

Per marketplace tracking issue, this skill has critical quality issues:

Word count: 2,850 (target: <500)

Issues

1. 35+ sections — overcomplicated structure. Collapse to 4-5: Overview, When to Use, Quick Workflow, Key Commands, Common Gotchas
2. Narrative tone — "Agent-Optimized Design" section is essay, not actionable
3. "CRITICAL: Full Verification Required" — 97 lines that should be references/verification-checklist.md
4. "Language Choice" section — belongs in references/language-choice.md
5. macOS troubleshooting — belongs in references/troubleshooting.md

Recommended Actions

• Move verification checklist (97 lines) to references/verification-checklist.md
• Move language choice to references/language-choice.md
• Move macOS section to references
• Collapse 35+ sections into 4-5 core sections
• Rewrite frontmatter description to only list trigger conditions
• Target: ~400-500 words in SKILL.md