- Rename closing_style → closing_tendency in all 5 personas, making it
a soft preference rather than a hard constraint
- Add closing variation rule + 6 closing patterns table to writing-guide.md
- Step 4.5: LLM judges best closing from content; checks history.yaml
last 3 articles to avoid repeating the same closing_type
- Step 8.1: record closing_type in history.yaml for dedup
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>