Adds the services/news-ingester Bun service that pulls 25 public RSS/JSON
feeds into news.curated_articles every 15 min, with Mozilla Readability
fallback for thin RSS bodies and 30-day retention. apps/api /feed is
rewritten to read from the new pool table directly instead of the
sync_changes hack, with topics/lang/since/limit/offset query params.
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
