Improve search results and fix RSS feeds

- Double MAX_RESULTS from 12 to 24
- Prioritize news over static infrastructure in search
- Update News24 URL to post-redirect destination (feeds.capi24.com)
- Add trailing slash to SCMP URL
- Add feeds.capi24.com to both proxy allowlists

api/rss-proxy.js

@@ -125,6 +125,7 @@ const ALLOWED_DOMAINS = [
   'kyivindependent.com',
   'www.themoscowtimes.com',
   'feeds.24.com',
+  'feeds.capi24.com',  // News24 redirect destination
   // International Organizations
   'news.un.org',
   'www.iaea.org',