- Briefs now fill from a rolling window (prefer today, backfill up to
window_days) and exclude anything featured in the last 7 days of briefs, so
slow days still produce five items without stories lingering day to day.
- New 'check-feeds' command fetches and parses every feed to catch dead ones.
- Added 16 validated sources (science, environment, animals, culture),
expanding coverage from 12 to 28 feeds to reduce staleness.
Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>