Generates the per-language RSS feeds. English articles are
published to rss.xml; every other supported language gets its own
rss_<lang>.xml so feed readers subscribe to a single locale instead
of a mixed-language stream. Each feed carries a localized
<title>/<description> channel and items sorted newest-first by
pubDate and tagged with <dc:language>.
Extracted from the monolithic sitemap.ts so RSS generation can be
unit-tested in isolation and so any future feed format (Atom,
JSON-Feed, news-specific RSS) reuses the same item shape and escaping.
Description
Generates the per-language RSS feeds. English articles are published to
rss.xml; every other supported language gets its ownrss_<lang>.xmlso feed readers subscribe to a single locale instead of a mixed-language stream. Each feed carries a localized<title>/<description>channel and items sorted newest-first bypubDateand tagged with<dc:language>.Extracted from the monolithic
sitemap.tsso RSS generation can be unit-tested in isolation and so any future feed format (Atom, JSON-Feed, news-specific RSS) reuses the same item shape and escaping.