Task 16: RSS Feeds

Files created:
- src/pages/rss.xml.ts (EN feed)
- src/pages/ru/rss.xml.ts (RU feed)

File modified:
- src/layouts/BaseLayout.astro (added <link rel="alternate" type="application/rss+xml"> for both EN and RU feeds)

Build: PASS (npm run build exited 0)

Generated feeds:
- dist/rss.xml exists (287 bytes)
- dist/ru/rss.xml exists (404 bytes)

Feed content verified:
- EN: title="Randify Blog", language="en", description present, link=https://randify.pro/
- RU: title="Блог Randify", language="ru", description present, link=https://randify.pro/

Note: Feeds are currently empty because no blog posts exist in src/content/blog/ yet. When posts are added with lang="en"/"ru" and draft !== true, they will appear automatically.